fix: 优化下载并发调度，发布 1.0.2-beta4

direct-link（外部 .minecraft 关联）同步逻辑会把来源路径当作分组名
写入 instance_groups 表，每次同步都覆盖用户手动设置的分组，导致
分组当场生效、重启丢失。

移除三处 direct-link 相关的来源分组写入，使 instance_groups 表
专属于用户分组：
- sync_direct_link_instances: 同步时不再覆盖 groups
- create_direct_link_instance: 建实例时不再写来源分组
- launcher::promote_external_instance_link: 提升外部实例时不再写分组

.github/workflows/changelog-comment.yml

@@ -19,6 +19,11 @@ jobs:
     name: Post changelog comment
     runs-on: ubuntu-latest
 
+    permissions:
+      issues: write
+      pull-requests: read
+      contents: read
+
     steps:
       - name: Post or update changelog comment
         uses: actions/github-script@d746ffe35508b1917358783b479e04febd2b8f71 # v9.0.0

Cargo.lock

@@ -1889,6 +1889,28 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
 
+[[package]]
+name = "fontconfig-parser"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbc773e24e02d4ddd8395fd30dc147524273a83e54e0f312d986ea30de5f5646"
+dependencies = [
+ "roxmltree",
+]
+
+[[package]]
+name = "fontdb"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2660c5e9157bf76d2db1294e4a9feba604ef610819a3b591088d0d8392a3290f"
+dependencies = [
+ "fontconfig-parser",
+ "log",
+ "memmap2",
+ "slotmap",
+ "tinyvec",
+]
+
 [[package]]
 name = "foreign-types"
 version = "0.5.0"
@@ -3477,6 +3499,15 @@ version = "2.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
+[[package]]
+name = "memmap2"
+version = "0.9.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1219ed1b7f229ee7104d281dd01d6802fe28bb6e95d292942c4daacdeb798c0"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "memoffset"
 version = "0.9.1"
@@ -5102,6 +5133,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "roxmltree"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c20b6793b5c2fa6553b250154b78d6d0db37e72700ae35fad9387a46f487c97"
+
 [[package]]
 name = "rsa"
 version = "0.9.10"
@@ -5758,6 +5795,15 @@ version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
 
+[[package]]
+name = "slotmap"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdd58c3c93c3d278ca835519292445cb4b0d4dc59ccfdf7ceadaab3f8aeb4038"
+dependencies = [
+ "version_check",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.15.2"
@@ -6795,7 +6841,7 @@ dependencies = [
 
 [[package]]
 name = "theseus"
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 dependencies = [
  "ariadne",
  "async-minecraft-ping",
@@ -6899,7 +6945,7 @@ dependencies = [
 
 [[package]]
 name = "theseus_gui"
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 dependencies = [
  "ashpd",
  "async_zip",
@@ -6912,6 +6958,7 @@ dependencies = [
  "either",
  "enumset",
  "flate2",
+ "fontdb",
  "futures",
  "hyper",
  "hyper-util",
@@ -6926,6 +6973,7 @@ dependencies = [
  "path-util",
  "quartz_nbt",
  "regex",
+ "semver",
  "serde",
  "serde_json",
  "serde_with",

Cargo.toml

@@ -44,6 +44,7 @@ encoding_rs = "0.8.35"
 enumset = "1.1.10"
 eyre = "0.6.12"
 flate2 = "1.1.4"
+fontdb = "0.24.0"
 fs4 = { version = "0.13.1", default-features = false }
 futures = "0.3.31"
 futures-lite = "2.6.1"
@@ -83,6 +84,7 @@ rgb = "0.8.52"
 rustls = { version = "0.23.42", default-features = false, features = ["ring", "std", "tls12"] }
 rustls-native-certs = "0.8.4"
 rustls-pki-types = "1.15.0"
+semver = "1.0.28"
 serde = "1.0.228"
 serde_bytes = "0.11.19"
 serde_cbor = "0.11.2"

_typos.toml

@@ -14,6 +14,8 @@ extend-exclude = [
   "packages/app-lib/src/api/content_search/WikiEntries.txt",
   # Bundled Monaco editor runtime contains upstream generated assets.
   "apps/app-frontend/public/monaco/",
+  # Minecraft language-name data (from mcmeta); contains language codes that look like typos.
+  "apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/languages.ts",
 ]
 
 [default.extend-words]

apps/app-frontend/package.json

@@ -1,7 +1,7 @@
 {
 	"name": "@modrinth/app-frontend",
 	"private": true,
-	"version": "1.0.0-beta15",
+	"version": "1.0.2-beta4",
 	"type": "module",
 	"scripts": {
 		"dev": "vite",

apps/app-frontend/src/App.vue

@@ -72,6 +72,7 @@ import InstancePlayerModal from '@/components/instance/InstancePlayerModal.vue'
 import TaggedModDownloadsModal from '@/components/instance/TaggedModDownloadsModal.vue'
 import InstanceExportModal from '@/components/lab/recipe-generator/InstanceExportModal.vue'
 import AccountsCard from '@/components/ui/AccountsCard.vue'
+import AnniversaryCelebration from '@/components/ui/AnniversaryCelebration.vue'
 import AppActionBar from '@/components/ui/AppActionBar.vue'
 import AxolotlLogo from '@/components/ui/AxolotlLogo.vue'
 import Breadcrumbs from '@/components/ui/Breadcrumbs.vue'
@@ -764,13 +765,13 @@ const messages = defineMessages({
 		defaultMessage: 'Library',
 	},
 	multiplayer: {
-		screenshots: {
-			id: 'app.navigation.screenshots',
-			defaultMessage: 'Screenshots',
-		},
 		id: 'app.navigation.multiplayer',
 		defaultMessage: 'Multiplayer',
 	},
+	screenshots: {
+		id: 'app.navigation.screenshots',
+		defaultMessage: 'Screenshots',
+	},
 	downloads: {
 		id: 'app.navigation.downloads',
 		defaultMessage: 'Downloads',
@@ -1260,7 +1261,7 @@ async function replayOnboarding(mode) {
 
 async function finishOnboarding() {
 	const wasReplay = onboardingReplay.value
-	const settings = onboardingSettings.value ?? (await getSettings())
+	const settings = await getSettings()
 	if (!onboardingReplay.value) {
 		if (onboardingMode.value === 'instance') {
 			settings.onboarding_instance_tour_completed = true
@@ -2221,6 +2222,7 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 </script>
 
 <template>
+	<AnniversaryCelebration />
 	<SplashScreen v-if="!stateFailed" ref="splashScreen" data-tauri-drag-region />
 	<SkinSiteSessionFrame v-if="stateInitialized" />
 	<InstancePlayerModal v-if="stateInitialized" />

apps/app-frontend/src/announcements/catalog.ts

@@ -32,6 +32,260 @@ export const ANNOUNCEMENT_CHANGE_TYPES: readonly AnnouncementChangeType[] = [
 ]
 
 export const launcherAnnouncements: readonly LauncherAnnouncement[] = [
+	{
+		id: 'launcher-1.0.2-beta4',
+		version: '1.0.2-beta4',
+		publishedAt: '2026-10-08',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta4',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta4',
+		},
+		changes: {
+			changed: [
+				{
+					'en-US': 'Improved download scheduling to reduce concurrency automatically when tasks are waiting for capacity, making large Minecraft installations more reliable on constrained connections.',
+					'zh-CN': '优化下载任务调度：任务因容量不足排队时会自动降低并发，提升大型 Minecraft 版本在受限网络环境下的安装稳定性。',
+				},
+			],
+			fixed: [
+				{
+					'en-US': 'Fixed downloads timing out while waiting for internal connection capacity, which could cause Minecraft installations to fail even when the network was available.',
+					'zh-CN': '修复下载任务等待内部连接容量时过早超时，导致网络正常的情况下 Minecraft 安装仍可能失败的问题。',
+				},
+				{
+					'en-US': 'Fixed instance group changes not saving for some instances.',
+					'zh-CN': '修复部分实例的分组修改无法保存的问题。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta3',
+		version: '1.0.2-beta3',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta3',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta3',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US': 'Fixed the anniversary celebration banner not showing above the window title bar, and made the banner background semi-transparent so the content behind it stays visible.',
+					'zh-CN': '修复周年庆庆祝横幅被窗口标题栏遮挡、无法显示的问题，并将横幅背景改为半透明，避免遮住下方内容。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta2',
+		version: '1.0.2-beta2',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta2',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta2',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US': 'Fixed the launcher failing to start with "no such table: synced_pack_catalog": the cross-instance sync migration was missing the synced_pack_catalog and synced_pack_instances tables.',
+					'zh-CN': '修复启动器因 "no such table: synced_pack_catalog" 无法启动的问题：跨实例同步迁移遗漏了 synced_pack_catalog 与 synced_pack_instances 两张表。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta1',
+		version: '1.0.2-beta1',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta1',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta1',
+		},
+		changes: {
+			added: [
+				{
+					'en-US': 'Cross-instance sync: share game options, resource packs, data packs, multiplayer servers, command history, and creative hotbars across instances, with per-option toggles and a fine-grained game-settings editor.',
+					'zh-CN': '跨实例同步：可跨实例共享游戏选项、资源包、数据包、多人服务器、命令历史与创造模式快捷栏，支持逐项开关与精细的游戏设置编辑器。',
+				},
+				{
+					'en-US': 'Starlight turns 12! On October 4th every year the launcher now shows a celebration banner and falling confetti. The anniversary number is computed from 2014.',
+					'zh-CN': 'Starlight 十二周年！每年 10 月 4 日，启动器会显示庆祝横幅与飘落的彩带、蛋糕，周年数按 2014 年起算。',
+				},
+				{
+					'en-US': 'Added a developer feature flag to preview the anniversary celebration at any time.',
+					'zh-CN': '新增开发者功能开关，可随时预览周年庆效果。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1',
+		version: '1.0.1',
+		publishedAt: '2026-10-03',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1',
+			'zh-CN': 'Starlight Launcher 1.0.1',
+		},
+		changes: {
+			added: [
+				{
+					'en-US': 'Instance backups: create deduplicated snapshots of an instance while it is closed, preview and restore them, exclude specific files or folders, and move the backup repository.',
+					'zh-CN': '实例备份：在实例关闭时创建去重快照，可预览与恢复，支持排除指定文件或文件夹，并可迁移备份仓库。',
+				},
+				{
+					'en-US': "Customize the launcher's UI font and monospace font in appearance settings.",
+					'zh-CN': '在外观设置中自定义启动器界面字体与等宽字体。',
+				},
+			],
+			fixed: [
+				{
+					'en-US': 'Fixed beta builds not auto-updating from beta9 to beta10 (prerelease versions were compared as text instead of by number).',
+					'zh-CN': '修复 beta 版本无法从 beta9 自动更新到 beta10 的问题（预发布版本此前按文本而非数字比较）。',
+				},
+				{
+					'en-US': 'Fixed a cross-crate visibility issue that prevented the launcher from compiling with the ignore-SSL-errors option.',
+					'zh-CN': '修复因跨 crate 可见性导致的编译失败，此前启用“忽略 SSL 证书错误”选项时无法编译。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta10',
+		version: '1.0.1-beta10',
+		publishedAt: '2026-10-02',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta10',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta10',
+		},
+		changes: {
+			added: [
+				{
+					'en-US': 'Reworked the instance-page tour into four steps covering content, files, worlds, and logs.',
+					'zh-CN': '重做实例页导览，分为内容、文件、世界、日志四步。',
+				},
+				{
+					'en-US': 'When the install location is a drive root, the installer now creates a Starlight subfolder automatically.',
+					'zh-CN': '安装位置选到盘符根目录时，安装器会自动创建 Starlight 子文件夹。',
+				},
+			],
+			fixed: [
+				{
+					'en-US': 'Fixed the launcher UI scale reverting after a restart.',
+					'zh-CN': '修复启动器界面缩放重启后恢复原状的问题。',
+				},
+				{
+					'en-US': 'Fixed developer feature flags not saving.',
+					'zh-CN': '修复开发者功能开关无法保存的问题。',
+				},
+				{
+					'en-US': 'Fixed instance group edits not saving for instances without an applied content set.',
+					'zh-CN': '修复没有应用内容集的实例无法保存分组修改的问题。',
+				},
+				{
+					'en-US': 'Fixed the launcher crashing on startup when feature flags were out of sync between the frontend and backend.',
+					'zh-CN': '修复前后端功能开关不同步导致启动器启动崩溃的问题。',
+				},
+				{
+					'en-US': 'Fixed being unable to copy text inside the embedded skin site.',
+					'zh-CN': '修复内嵌皮肤站中无法复制文本的问题。',
+				},
+				{
+					'en-US': 'Fixed the onboarding prompt not dismissing when clicking anywhere.',
+					'zh-CN': '修复导览提示点击任意位置无法关闭的问题。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta9',
+		version: '1.0.1-beta9',
+		publishedAt: '2026-10-02',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta9',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta9',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US':
+						'Fixed a crash on the minimal home layout caused by an unrecognized multiplayer feature flag (missing backend enum variant).',
+					'zh-CN': '修复多人联机功能开关缺少后端枚举变体、导致精简主页报错的问题。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta8',
+		version: '1.0.1-beta8',
+		publishedAt: '2026-10-02',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta8',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta8',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US':
+						'Fixed the sidebar navigation entries breaking after the screenshot center was added.',
+					'zh-CN': '修复添加截图中心后侧边栏导航项损坏的问题。',
+				},
+				{
+					'en-US':
+						'Fixed being unable to install the StarLight hosted pack even after signing in (missing command permission).',
+					'zh-CN': '修复登录后仍无法安装 StarLight 实例的问题（命令权限缺失）。',
+				},
+				{
+					'en-US':
+						'Fixed the launcher UI scaling not applying when changed (missing command permission).',
+					'zh-CN': '修复修改启动器界面缩放后不生效的问题（命令权限缺失）。',
+				},
+				{
+					'en-US':
+						'Fixed several screenshot center actions failing due to missing command permissions.',
+					'zh-CN': '修复截图中心部分操作因命令权限缺失而失败的问题。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta7',
+		version: '1.0.1-beta7',
+		publishedAt: '2026-10-02',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta7',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta7',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'Added a screenshot center: browse screenshots across every instance, group them (custom groups, by instance, or by date), preview, edit (crop, rotate, annotate, censor), and export as ZIP.',
+					'zh-CN':
+						'新增截图中心：跨实例浏览截图，支持自定义/按实例/按日期分组，可预览、编辑（裁剪、标注、打码等）并导出为 ZIP。',
+				},
+				{
+					'en-US':
+						'Added the multiplayer (Terracotta) entry to the sidebar, behind a feature flag.',
+					'zh-CN': '侧边栏新增多人联机（陶瓦）入口，由功能开关控制。',
+				},
+			],
+			changed: [
+				{
+					'en-US':
+						'Launcher UI scaling is now persisted in the backend and applied via native webview zoom, so it scales embedded pages correctly and keeps onboarding anchors aligned.',
+					'zh-CN':
+						'启动器界面缩放改为后端持久化，并通过原生 webview 缩放应用，可正确缩放内嵌页面且导览锚点不再偏移。',
+				},
+			],
+			fixed: [
+				{
+					'en-US':
+						'Fixed the onboarding tour skipping its first step when the target anchor was missing.',
+					'zh-CN': '修复导览首步在目标锚点缺失时被自动跳过的问题。',
+				},
+			],
+		},
+	},
 	{
 		id: 'launcher-1.0.1-beta6',
 		version: '1.0.1-beta6',

apps/app-frontend/src/components/ui/AnniversaryCelebration.vue

@@ -0,0 +1,246 @@
+<script setup lang="ts">
+import { defineMessages, useVIntl } from '@modrinth/ui'
+import { computed, onUnmounted, ref, watch } from 'vue'
+
+import { anniversaryYear, ordinal, shouldCelebrate } from '@/helpers/anniversary'
+import { useTheming } from '@/store/state'
+
+const { formatMessage } = useVIntl()
+const themeStore = useTheming()
+
+const messages = defineMessages({
+	banner: {
+		id: 'app.anniversary.banner',
+		defaultMessage: 'Happy {ordinal} Anniversary, Starlight!',
+	},
+})
+
+/** Emoji that drift down from the top of the window. */
+const CONFETTI_EMOJI = ['🎂', '🎉', '🎊', '🎈', '✨', '🧁', '🍰']
+
+type Confetti = {
+	id: number
+	emoji: string
+	left: number
+	delay: number
+	duration: number
+	size: number
+	drift: number
+}
+
+const visible = ref(false)
+const years = ref(0)
+const confetti = ref<Confetti[]>([])
+let spawnTimer: number | undefined
+let nextId = 0
+
+function spawnConfetti(): void {
+	const emoji = CONFETTI_EMOJI[Math.floor(Math.random() * CONFETTI_EMOJI.length)]
+	confetti.value.push({
+		id: nextId++,
+		emoji,
+		left: Math.random() * 100,
+		delay: 0,
+		duration: 6 + Math.random() * 5,
+		size: 1 + Math.random() * 1.4,
+		drift: (Math.random() - 0.5) * 160,
+	})
+	// Keep the DOM small; drop the oldest once we exceed a cap.
+	if (confetti.value.length > 60) confetti.value.splice(0, 10)
+}
+
+const forced = computed(() => themeStore.getFeatureFlag('force_anniversary_celebration'))
+
+function startCelebration(): void {
+	if (spawnTimer !== undefined) return
+	years.value = anniversaryYear()
+	visible.value = true
+	// Seed a few so the screen is not empty on the first frame.
+	for (let i = 0; i < 12; i++) spawnConfetti()
+	spawnTimer = window.setInterval(spawnConfetti, 700)
+}
+
+function stopCelebration(): void {
+	if (spawnTimer !== undefined) {
+		window.clearInterval(spawnTimer)
+		spawnTimer = undefined
+	}
+	confetti.value = []
+	visible.value = false
+}
+
+watch(
+	() => shouldCelebrate(forced.value),
+	(active) => (active ? startCelebration() : stopCelebration()),
+	{ immediate: true },
+)
+
+onUnmounted(stopCelebration)
+
+const bannerText = computed(() =>
+	formatMessage(messages.banner, { ordinal: ordinal(years.value) }),
+)
+</script>
+
+<template>
+	<Transition name="anniversary-fade">
+		<div v-if="visible" class="anniversary-root" aria-live="polite">
+			<!-- Falling confetti layer (click-through). -->
+			<div class="anniversary-confetti" aria-hidden="true">
+				<span
+					v-for="piece in confetti"
+					:key="piece.id"
+					class="anniversary-piece"
+					:style="{
+						left: piece.left + '%',
+						fontSize: piece.size + 'rem',
+						animationDelay: piece.delay + 's',
+						animationDuration: piece.duration + 's',
+						'--drift': piece.drift + 'px',
+					}"
+				>
+					{{ piece.emoji }}
+				</span>
+			</div>
+
+			<!-- Top banner. -->
+			<div class="anniversary-banner">
+				<span class="anniversary-banner-emoji">🎂</span>
+				<span class="anniversary-banner-text">{{ bannerText }}</span>
+				<span class="anniversary-banner-emoji">🎉</span>
+			</div>
+		</div>
+	</Transition>
+</template>
+
+<style scoped>
+.anniversary-root {
+	position: fixed;
+	inset: 0;
+	/* Above content, below modals/drag overlays (which use z-[200]). */
+	z-index: 150;
+	pointer-events: none;
+}
+
+.anniversary-confetti {
+	position: absolute;
+	inset: 0;
+	overflow: hidden;
+}
+
+.anniversary-piece {
+	position: absolute;
+	top: -3rem;
+	will-change: transform;
+	animation-name: anniversary-fall;
+	animation-timing-function: linear;
+	animation-iteration-count: 1;
+	animation-fill-mode: forwards;
+}
+
+@keyframes anniversary-fall {
+	0% {
+		transform: translate3d(0, 0, 0) rotate(0deg);
+		opacity: 0;
+	}
+	10% {
+		opacity: 1;
+	}
+	100% {
+		transform: translate3d(var(--drift, 0), 110vh, 0) rotate(360deg);
+		opacity: 0.85;
+	}
+}
+
+.anniversary-banner {
+	position: absolute;
+	/* 避开原生窗口标题栏（Windows/macOS 系统装饰条会盖住 top:0 的内容）；
+	   titlebar-area-height 是 Tauri 暴露的标题栏高度变量，不支持时降级为 0 */
+	top: env(titlebar-area-height, 0px);
+	left: 0;
+	right: 0;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: 0.5rem;
+	padding: 0.4rem 1rem;
+	font-weight: 700;
+	font-size: 0.95rem;
+	letter-spacing: 0.02em;
+	color: #fff;
+	/* 半透明深色兜底：即使下面的渐变背景失效，白字也不会在浅色页面上隐形 */
+	background-color: rgba(20, 16, 28, 0.35);
+	/* 半透明彩色渐变：让窗口下方的内容能透出来 */
+	background-image: linear-gradient(
+		90deg,
+		rgba(244, 114, 182, 0.8),
+		rgba(250, 204, 21, 0.8),
+		rgba(74, 222, 128, 0.8),
+		rgba(56, 189, 248, 0.8),
+		rgba(167, 139, 250, 0.8),
+		rgba(244, 114, 182, 0.8)
+	);
+	background-size: 300% 100%;
+	animation: anniversary-gradient 8s linear infinite;
+	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
+	text-shadow:
+		0 1px 2px rgba(0, 0, 0, 0.55),
+		0 0 4px rgba(0, 0, 0, 0.35);
+}
+
+.anniversary-banner-text {
+	animation: anniversary-pulse 1.8s ease-in-out infinite;
+}
+
+.anniversary-banner-emoji {
+	animation: anniversary-bounce 1.4s ease-in-out infinite;
+}
+
+@keyframes anniversary-gradient {
+	0% {
+		background-position: 0% 50%;
+	}
+	100% {
+		background-position: 300% 50%;
+	}
+}
+
+@keyframes anniversary-pulse {
+	0%,
+	100% {
+		transform: scale(1);
+	}
+	50% {
+		transform: scale(1.06);
+	}
+}
+
+@keyframes anniversary-bounce {
+	0%,
+	100% {
+		transform: translateY(0);
+	}
+	50% {
+		transform: translateY(-3px);
+	}
+}
+
+.anniversary-fade-enter-active,
+.anniversary-fade-leave-active {
+	transition: opacity 0.6s ease;
+}
+
+.anniversary-fade-enter-from,
+.anniversary-fade-leave-to {
+	opacity: 0;
+}
+
+@media (prefers-reduced-motion: reduce) {
+	.anniversary-piece,
+	.anniversary-banner,
+	.anniversary-banner-text,
+	.anniversary-banner-emoji {
+		animation: none;
+	}
+}
+</style>

apps/app-frontend/src/components/ui/SkinSiteFrame.vue

@@ -16,6 +16,7 @@ const messages = defineMessages({
 <template>
 	<iframe
 		:src="skinSiteFrameUrl"
+		allow="clipboard-write; clipboard-read"
 		:title="formatMessage(messages.frameTitle)"
 		class="block h-full min-h-0 w-full border-0"
 	/>

apps/app-frontend/src/components/ui/instance_settings/BackupExclusionSelector.vue

@@ -0,0 +1,132 @@
+<script setup lang="ts">
+import { FileIcon, FolderIcon, MinusIcon, PlusIcon } from '@modrinth/assets'
+import { Button, defineMessages, injectNotificationManager, useVIntl } from '@modrinth/ui'
+import { open } from '@tauri-apps/plugin-dialog'
+import { ref } from 'vue'
+
+import {
+	type BackupExclusion,
+	type BackupExclusionKind,
+	canonicalizeBackupExclusions,
+	formatBackupExclusionPath,
+	normalizeBackupExclusion,
+} from '@/helpers/instance-backup'
+
+const props = defineProps<{
+	instanceId: string
+	instanceRoot: string
+	modelValue: BackupExclusion[]
+	disabled?: boolean
+}>()
+const emit = defineEmits<{ 'update:modelValue': [value: BackupExclusion[]] }>()
+const { formatMessage } = useVIntl()
+const { handleError } = injectNotificationManager()
+const picking = ref<BackupExclusionKind | null>(null)
+
+const messages = defineMessages({
+	empty: {
+		id: 'instance.backups.exclusions.empty',
+		defaultMessage: 'No files or folders are excluded.',
+	},
+	addFile: {
+		id: 'instance.backups.exclusions.add-file',
+		defaultMessage: 'Add excluded file',
+	},
+	addFolder: {
+		id: 'instance.backups.exclusions.add-folder',
+		defaultMessage: 'Add excluded folder',
+	},
+	remove: {
+		id: 'instance.backups.exclusions.remove',
+		defaultMessage: 'Remove {path} from exclusions',
+	},
+})
+
+function pickedPath(result: unknown): string | null {
+	if (typeof result === 'string') return result
+	if (result && typeof result === 'object' && 'path' in result) {
+		const path = (result as { path?: unknown }).path
+		return typeof path === 'string' ? path : null
+	}
+	return null
+}
+
+async function addExclusion(kind: BackupExclusionKind) {
+	if (props.disabled || picking.value) return
+	picking.value = kind
+	try {
+		const result = await open({
+			directory: kind === 'directory',
+			multiple: false,
+			defaultPath: props.instanceRoot,
+		})
+		const selectedPath = pickedPath(result)
+		if (!selectedPath) return
+		const exclusion = await normalizeBackupExclusion(props.instanceId, selectedPath, kind)
+		emit('update:modelValue', canonicalizeBackupExclusions([...props.modelValue, exclusion]))
+	} catch (error) {
+		handleError(error)
+	} finally {
+		picking.value = null
+	}
+}
+
+function removeExclusion(path: string) {
+	emit(
+		'update:modelValue',
+		props.modelValue.filter((exclusion) => exclusion.path !== path),
+	)
+}
+</script>
+
+<template>
+	<div class="flex flex-col gap-3">
+		<p v-if="modelValue.length === 0" class="m-0 text-sm text-[var(--color-text-tertiary)]">
+			{{ formatMessage(messages.empty) }}
+		</p>
+		<div
+			v-else
+			class="divide-y divide-solid divide-surface-4 rounded-lg border border-solid border-surface-4"
+		>
+			<div
+				v-for="exclusion in modelValue"
+				:key="exclusion.path"
+				class="flex min-h-11 items-center gap-3 px-3 py-2"
+			>
+				<FolderIcon
+					v-if="exclusion.kind === 'directory'"
+					class="size-5 shrink-0 text-[var(--color-text-tertiary)]"
+				/>
+				<FileIcon v-else class="size-5 shrink-0 text-[var(--color-text-tertiary)]" />
+				<code class="min-w-0 flex-1 truncate text-sm text-[var(--color-text-primary)]">{{
+					formatBackupExclusionPath(exclusion)
+				}}</code>
+				<Button
+					type="quiet"
+					size="2xs"
+					circular
+					icon-only
+					:disabled="disabled || picking !== null"
+					:aria-label="
+						formatMessage(messages.remove, { path: formatBackupExclusionPath(exclusion) })
+					"
+					@click="removeExclusion(exclusion.path)"
+					><MinusIcon />
+				</Button>
+			</div>
+		</div>
+		<div class="flex flex-wrap gap-2">
+			<Button type="outlined" :disabled="disabled || picking !== null" @click="addExclusion('file')"
+				><PlusIcon />
+				{{ formatMessage(messages.addFile) }}
+			</Button>
+			<Button
+				type="outlined"
+				:disabled="disabled || picking !== null"
+				@click="addExclusion('directory')"
+				><PlusIcon />
+				{{ formatMessage(messages.addFolder) }}
+			</Button>
+		</div>
+	</div>
+</template>

apps/app-frontend/src/components/ui/instance_settings/BackupSettings.vue

@@ -0,0 +1,675 @@
+<script setup lang="ts">
+import { FileArchiveIcon, SaveIcon, TrashIcon, UndoIcon, XIcon } from '@modrinth/assets'
+import {
+	Admonition,
+	Button,
+	commonMessages,
+	defineMessages,
+	injectNotificationManager,
+	NewModal,
+	useFormatBytes,
+	useFormatDateTime,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
+
+import { get_full_path } from '@/helpers/instance'
+import {
+	type BackupExclusion,
+	type BackupOperation,
+	type BackupOperationState,
+	type BackupProgressStage,
+	type BackupRestorePreview,
+	type BackupSnapshot,
+	cancelBackup,
+	deleteBackup,
+	disableBackups,
+	enableBackups,
+	getBackupConfig,
+	type InstanceBackupConfig,
+	type InstanceBackupEligibility,
+	listBackupOperations,
+	listBackups,
+	listenBackupProgress,
+	restoreBackup,
+	startBackup,
+	startBackupRestorePreview,
+	updateBackupExclusions,
+} from '@/helpers/instance-backup'
+import { injectInstanceSettings } from '@/providers/instance-settings'
+
+import BackupExclusionSelector from './BackupExclusionSelector.vue'
+
+const { instance } = injectInstanceSettings()
+const { formatMessage } = useVIntl()
+const formatBytes = useFormatBytes()
+const formatDate = useFormatDateTime({ dateStyle: 'medium', timeStyle: 'short' })
+const { handleError } = injectNotificationManager()
+
+const messages = defineMessages({
+	title: { id: 'instance.backups.title', defaultMessage: 'Instance backups' },
+	description: {
+		id: 'instance.backups.description',
+		defaultMessage: 'Create deduplicated snapshots of the whole instance while it is closed.',
+	},
+	loading: { id: 'instance.backups.loading', defaultMessage: 'Loading backup settings...' },
+	unavailable: { id: 'instance.backups.unavailable', defaultMessage: 'Backups are unavailable' },
+	notInstalled: {
+		id: 'instance.backups.unavailable.not-installed',
+		defaultMessage: 'Finish installing this instance before enabling backups.',
+	},
+	symlinkInstance: {
+		id: 'instance.backups.unavailable.symlink',
+		defaultMessage: 'Imported symbolic-link instances cannot be backed up.',
+	},
+	directLinked: {
+		id: 'instance.backups.unavailable.direct-linked',
+		defaultMessage: 'Instances linked directly to another launcher cannot be backed up.',
+	},
+	externalDirectory: {
+		id: 'instance.backups.unavailable.external-directory',
+		defaultMessage: 'Instances that use an external game directory cannot be backed up.',
+	},
+	rootMissing: {
+		id: 'instance.backups.unavailable.root-missing',
+		defaultMessage: 'The instance folder is missing.',
+	},
+	rootLink: {
+		id: 'instance.backups.unavailable.root-link',
+		defaultMessage: 'Instances whose root folder is a link cannot be backed up.',
+	},
+	choose: {
+		id: 'instance.backups.choose',
+		defaultMessage:
+			'Everything is backed up by default. Add files or folders that should be excluded.',
+	},
+	enable: { id: 'instance.backups.enable', defaultMessage: 'Enable backups' },
+	editExclusions: { id: 'instance.backups.edit-exclusions', defaultMessage: 'Edit exclusions' },
+	saveExclusions: {
+		id: 'instance.backups.save-exclusions',
+		defaultMessage: 'Save exclusions',
+	},
+	allIncluded: {
+		id: 'instance.backups.all-included',
+		defaultMessage: 'All instance files and folders are included.',
+	},
+	excludedPaths: {
+		id: 'instance.backups.excluded-paths',
+		defaultMessage: 'Excluded: {paths}',
+	},
+	backupNow: { id: 'instance.backups.backup-now', defaultMessage: 'Back up now' },
+	cancelBackup: { id: 'instance.backups.cancel', defaultMessage: 'Cancel backup' },
+	stageScanning: {
+		id: 'instance.backups.stage.scanning',
+		defaultMessage: 'Scanning files',
+	},
+	stageHashing: { id: 'instance.backups.stage.hashing', defaultMessage: 'Hashing files' },
+	stageSaving: { id: 'instance.backups.stage.saving', defaultMessage: 'Saving snapshot index' },
+	stageQueued: { id: 'instance.backups.stage.queued', defaultMessage: 'Waiting to start' },
+	stageValidating: {
+		id: 'instance.backups.stage.validating',
+		defaultMessage: 'Validating restore',
+	},
+	stageMaterializing: {
+		id: 'instance.backups.stage.materializing',
+		defaultMessage: 'Preparing changed files',
+	},
+	stageApplying: {
+		id: 'instance.backups.stage.applying',
+		defaultMessage: 'Applying changed files',
+	},
+	stagePreview: {
+		id: 'instance.backups.stage.preview',
+		defaultMessage: 'Analyzing restore changes',
+	},
+	progressBytes: {
+		id: 'instance.backups.progress-bytes',
+		defaultMessage: '{processed} of {total}',
+	},
+	stageFailed: { id: 'instance.backups.stage.failed', defaultMessage: 'Backup failed' },
+	stageInterrupted: {
+		id: 'instance.backups.stage.interrupted',
+		defaultMessage: 'Backup operation was interrupted',
+	},
+	snapshots: { id: 'instance.backups.snapshots', defaultMessage: 'Snapshots' },
+	empty: { id: 'instance.backups.empty', defaultMessage: 'No backups have been created yet.' },
+	snapshotMeta: {
+		id: 'instance.backups.snapshot-meta',
+		defaultMessage: '{files, plural, one {# file} other {# files}} · {size}',
+	},
+	addedSize: { id: 'instance.backups.added-size', defaultMessage: '{size} newly stored' },
+	restore: { id: 'instance.backups.restore', defaultMessage: 'Restore backup' },
+	delete: { id: 'instance.backups.delete', defaultMessage: 'Delete backup' },
+	disable: { id: 'instance.backups.disable', defaultMessage: 'Disable backups' },
+	disableBlocked: {
+		id: 'instance.backups.disable-blocked',
+		defaultMessage: 'Delete every snapshot before disabling backups.',
+	},
+	restoreTitle: { id: 'instance.backups.restore-title', defaultMessage: 'Restore this backup?' },
+	restoreBody: {
+		id: 'instance.backups.restore-body',
+		defaultMessage:
+			'Upcoming operations: add {added, plural, one {# file} other {# files}}, modify {modified, plural, one {# file} other {# files}}, and delete {deleted, plural, one {# file} other {# files}}. Continue?',
+	},
+	deleteTitle: { id: 'instance.backups.delete-title', defaultMessage: 'Delete this backup?' },
+	deleteBody: {
+		id: 'instance.backups.delete-body',
+		defaultMessage:
+			'This snapshot will be permanently deleted. Unused stored files will also be removed.',
+	},
+})
+
+const config = ref<InstanceBackupConfig | null>(null)
+const snapshots = ref<BackupSnapshot[]>([])
+const instanceRoot = ref('')
+const loading = ref(true)
+const editingExclusions = ref(false)
+const excludedPaths = ref<BackupExclusion[]>([])
+const action = ref<string | null>(null)
+const operation = ref<BackupOperation | null>(null)
+const selectedSnapshot = ref<BackupSnapshot | null>(null)
+const restorePreview = ref<BackupRestorePreview | null>(null)
+const deleteModal = ref<InstanceType<typeof NewModal>>()
+const restoreModal = ref<InstanceType<typeof NewModal>>()
+let unlisten: (() => void) | null = null
+
+const eligible = computed(() => config.value?.eligibility === 'eligible')
+const terminalStates: BackupOperationState[] = ['completed', 'cancelled', 'failed', 'interrupted']
+const isRunning = computed(
+	() => operation.value !== null && !terminalStates.includes(operation.value.state),
+)
+const canCancel = computed(() => operation.value?.cancellable === true)
+const operationLabel = computed(() => {
+	if (operation.value?.operation_type === 'restore_preview') {
+		return formatMessage(messages.stagePreview)
+	}
+	switch (operation.value?.state) {
+		case 'queued':
+			return formatMessage(messages.stageQueued)
+		case 'hashing':
+			return formatMessage(messages.stageHashing)
+		case 'saving':
+			return formatMessage(messages.stageSaving)
+		case 'validating':
+			return formatMessage(messages.stageValidating)
+		case 'materializing':
+			return formatMessage(messages.stageMaterializing)
+		case 'applying':
+			return formatMessage(messages.stageApplying)
+		default:
+			return formatMessage(messages.stageScanning)
+	}
+})
+
+function operationFromEvent(event: {
+	operationId: string
+	operationType: BackupOperation['operation_type']
+	instanceId?: string
+	stage: BackupProgressStage
+	processedBytes: number
+	totalBytes: number
+	snapshotId?: string
+	message?: string
+}): BackupOperation {
+	const now = Date.now()
+	const state: BackupOperationState =
+		event.stage === 'restoring' || event.stage === 'copying'
+			? 'materializing'
+			: event.stage === 'deleting'
+				? 'queued'
+				: event.stage
+	return {
+		id: event.operationId,
+		operation_type: event.operationType,
+		instance_id: event.instanceId ?? instance.value.id,
+		snapshot_id: event.snapshotId,
+		state,
+		processed_bytes: event.processedBytes,
+		total_bytes: event.totalBytes,
+		cancellable: event.stage === 'scanning' || event.stage === 'hashing',
+		cancel_requested: false,
+		error: event.message,
+		created_at: operation.value?.id === event.operationId ? operation.value.created_at : now,
+		updated_at: now,
+		finished_at: ['completed', 'cancelled', 'failed'].includes(event.stage) ? now : undefined,
+	}
+}
+
+async function refreshOperation() {
+	const operations = await listBackupOperations(instance.value.id)
+	const latest = operations[0] ?? null
+	operation.value =
+		latest && (isRunningState(latest.state) || ['failed', 'interrupted'].includes(latest.state))
+			? latest
+			: null
+	if (operation.value?.operation_type === 'restore_preview' && operation.value.snapshot_id) {
+		selectedSnapshot.value =
+			snapshots.value.find((snapshot) => snapshot.id === operation.value?.snapshot_id) ?? null
+	}
+}
+
+function isRunningState(state: BackupOperationState) {
+	return !terminalStates.includes(state)
+}
+
+const eligibilityMessages: Record<
+	Exclude<InstanceBackupEligibility, 'eligible'>,
+	keyof typeof messages
+> = {
+	not_installed: 'notInstalled',
+	symlink_instance: 'symlinkInstance',
+	direct_linked_instance: 'directLinked',
+	external_game_directory: 'externalDirectory',
+	root_missing: 'rootMissing',
+	root_is_link: 'rootLink',
+}
+
+const unavailableReason = computed(() => {
+	const eligibility = config.value?.eligibility
+	if (!eligibility || eligibility === 'eligible') return ''
+	return formatMessage(messages[eligibilityMessages[eligibility]])
+})
+
+async function refresh() {
+	loading.value = true
+	try {
+		const nextConfig = await getBackupConfig(instance.value.id)
+		config.value = nextConfig
+		excludedPaths.value = nextConfig.enabled ? [...nextConfig.excluded_paths] : []
+		const [nextRoot, nextSnapshots] = await Promise.all([
+			nextConfig.eligibility === 'eligible' ? get_full_path(instance.value.id) : '',
+			listBackups(instance.value.id),
+		])
+		instanceRoot.value = nextRoot
+		snapshots.value = nextSnapshots
+		await refreshOperation()
+	} catch (error) {
+		handleError(error)
+	} finally {
+		loading.value = false
+	}
+}
+
+async function runAction(name: string, task: () => Promise<void>) {
+	action.value = name
+	try {
+		await task()
+	} catch (error) {
+		handleError(error)
+	} finally {
+		action.value = null
+	}
+}
+
+function enable() {
+	void runAction('enable', async () => {
+		config.value = await enableBackups(instance.value.id, excludedPaths.value)
+		editingExclusions.value = false
+	})
+}
+
+function beginEditingExclusions() {
+	excludedPaths.value = [...(config.value?.excluded_paths ?? [])]
+	editingExclusions.value = true
+}
+
+function saveExclusions() {
+	void runAction('exclusions', async () => {
+		config.value = await updateBackupExclusions(instance.value.id, excludedPaths.value)
+		editingExclusions.value = false
+	})
+}
+
+function start() {
+	void runAction('start', async () => {
+		const id = await startBackup(instance.value.id)
+		operation.value = {
+			id,
+			operation_type: 'create',
+			instance_id: instance.value.id,
+			state: 'queued',
+			processed_bytes: 0,
+			total_bytes: 0,
+			cancellable: true,
+			cancel_requested: false,
+			created_at: Date.now(),
+			updated_at: Date.now(),
+		}
+	})
+}
+
+function cancel() {
+	if (!operation.value || !canCancel.value) return
+	void runAction('cancel', async () => {
+		if (await cancelBackup(operation.value!.id)) {
+			operation.value = {
+				...operation.value!,
+				cancellable: false,
+				cancel_requested: true,
+			}
+		}
+	})
+}
+
+function confirmDelete(snapshot: BackupSnapshot) {
+	selectedSnapshot.value = snapshot
+	deleteModal.value?.show()
+}
+
+function confirmRestore(snapshot: BackupSnapshot) {
+	void runAction(`preview:${snapshot.id}`, async () => {
+		selectedSnapshot.value = snapshot
+		const id = await startBackupRestorePreview(snapshot.id)
+		operation.value = {
+			id,
+			operation_type: 'restore_preview',
+			instance_id: instance.value.id,
+			snapshot_id: snapshot.id,
+			state: 'queued',
+			processed_bytes: 0,
+			total_bytes: snapshot.logical_size,
+			cancellable: true,
+			cancel_requested: false,
+			created_at: Date.now(),
+			updated_at: Date.now(),
+		}
+	})
+}
+
+function removeSnapshot() {
+	if (!selectedSnapshot.value) return
+	void runAction(`delete:${selectedSnapshot.value.id}`, async () => {
+		await deleteBackup(selectedSnapshot.value!.id)
+		await refresh()
+		deleteModal.value?.hide()
+		selectedSnapshot.value = null
+	})
+}
+
+function restoreSnapshot() {
+	if (!selectedSnapshot.value || !restorePreview.value) return
+	void runAction(`restore:${selectedSnapshot.value.id}`, async () => {
+		const id = await restoreBackup(selectedSnapshot.value!.id, restorePreview.value!.plan_token)
+		operation.value = {
+			id,
+			operation_type: 'restore',
+			instance_id: instance.value.id,
+			snapshot_id: selectedSnapshot.value!.id,
+			state: 'queued',
+			processed_bytes: 0,
+			total_bytes: selectedSnapshot.value!.logical_size,
+			cancellable: true,
+			cancel_requested: false,
+			created_at: Date.now(),
+			updated_at: Date.now(),
+		}
+		restoreModal.value?.hide()
+		selectedSnapshot.value = null
+		restorePreview.value = null
+	})
+}
+
+function disable() {
+	void runAction('disable', async () => {
+		await disableBackups(instance.value.id)
+		await refresh()
+	})
+}
+
+onMounted(async () => {
+	unlisten = await listenBackupProgress(async (event) => {
+		if (
+			!['create', 'restore', 'restore_preview'].includes(event.operationType) ||
+			event.instanceId !== instance.value.id
+		)
+			return
+		operation.value = operationFromEvent(event)
+		if (event.operationType === 'restore_preview' && event.stage === 'completed') {
+			const completed = (await listBackupOperations(instance.value.id)).find(
+				(candidate) => candidate.id === event.operationId,
+			)
+			const snapshot = snapshots.value.find((candidate) => candidate.id === event.snapshotId)
+			if (completed?.restore_preview && snapshot) {
+				selectedSnapshot.value = snapshot
+				restorePreview.value = completed.restore_preview
+				operation.value = null
+				restoreModal.value?.show()
+				return
+			}
+		}
+		if (['completed', 'cancelled', 'failed'].includes(event.stage)) {
+			void refresh()
+		}
+	})
+	await refresh()
+})
+
+onUnmounted(() => unlisten?.())
+watch(
+	() => instance.value.id,
+	() => void refresh(),
+)
+</script>
+
+<template>
+	<div class="flex flex-col gap-5">
+		<header>
+			<h2 class="m-0 text-lg font-semibold text-[var(--color-text-primary)]">
+				{{ formatMessage(messages.title) }}
+			</h2>
+			<p class="m-0 mt-1 text-[var(--color-text-tertiary)]">
+				{{ formatMessage(messages.description) }}
+			</p>
+		</header>
+
+		<p v-if="loading" class="m-0 text-[var(--color-text-tertiary)]">
+			{{ formatMessage(messages.loading) }}
+		</p>
+		<Admonition v-else-if="!eligible" type="warning" :header="formatMessage(messages.unavailable)">
+			{{ unavailableReason }}
+		</Admonition>
+		<template v-else-if="config">
+			<div v-if="!config.enabled || editingExclusions" class="flex flex-col gap-4">
+				<p class="m-0 text-[var(--color-text-tertiary)]">{{ formatMessage(messages.choose) }}</p>
+				<BackupExclusionSelector
+					v-model="excludedPaths"
+					:instance-id="instance.id"
+					:instance-root="instanceRoot"
+					:disabled="action !== null"
+				/>
+				<div class="flex flex-wrap gap-2">
+					<Button :disabled="action !== null" @click="config.enabled ? saveExclusions() : enable()"
+						><SaveIcon />
+						{{ formatMessage(config.enabled ? messages.saveExclusions : messages.enable) }}
+					</Button>
+					<Button
+						v-if="config.enabled"
+						type="outlined"
+						:disabled="action !== null"
+						@click="editingExclusions = false"
+						><XIcon />
+						{{ formatMessage(commonMessages.cancelButton) }}
+					</Button>
+				</div>
+			</div>
+
+			<template v-else>
+				<div class="flex flex-col gap-2 rounded-lg border border-solid border-surface-4 p-3">
+					<p class="m-0 text-sm text-[var(--color-text-tertiary)]">
+						{{
+							config.excluded_paths.length === 0
+								? formatMessage(messages.allIncluded)
+								: formatMessage(messages.excludedPaths, {
+										paths: config.excluded_paths.map((entry) => entry.path).join(', '),
+									})
+						}}
+					</p>
+					<div class="flex flex-wrap gap-2">
+						<Button :disabled="isRunning || action !== null" @click="start"
+							><FileArchiveIcon />
+							{{ formatMessage(messages.backupNow) }}
+						</Button>
+						<Button v-if="canCancel" type="outlined" :disabled="action !== null" @click="cancel"
+							><XIcon />
+							{{ formatMessage(messages.cancelBackup) }}
+						</Button>
+						<Button
+							type="outlined"
+							:disabled="isRunning || action !== null"
+							@click="beginEditingExclusions"
+							>{{ formatMessage(messages.editExclusions) }}
+						</Button>
+					</div>
+					<p v-if="isRunning" class="m-0 text-sm font-medium text-[var(--color-text-primary)]">
+						{{ operationLabel }}
+						<span
+							v-if="(operation?.total_bytes ?? 0) > 0"
+							class="ml-2 text-[var(--color-text-tertiary)]"
+						>
+							{{
+								formatMessage(messages.progressBytes, {
+									processed: formatBytes(operation?.processed_bytes ?? 0),
+									total: formatBytes(operation?.total_bytes ?? 0),
+								})
+							}}
+						</span>
+					</p>
+					<p
+						v-else-if="operation?.state === 'failed' || operation?.state === 'interrupted'"
+						class="m-0 text-sm text-red"
+					>
+						{{
+							formatMessage(
+								operation.state === 'interrupted'
+									? messages.stageInterrupted
+									: messages.stageFailed,
+							)
+						}}<span v-if="operation.error">: {{ operation.error }}</span>
+					</p>
+				</div>
+
+				<section class="flex flex-col gap-3">
+					<h3 class="m-0 text-base font-semibold text-[var(--color-text-primary)]">
+						{{ formatMessage(messages.snapshots) }}
+					</h3>
+					<p v-if="snapshots.length === 0" class="m-0 text-[var(--color-text-tertiary)]">
+						{{ formatMessage(messages.empty) }}
+					</p>
+					<div
+						v-else
+						class="divide-y divide-solid divide-surface-4 rounded-lg border border-solid border-surface-4"
+					>
+						<div
+							v-for="snapshot in snapshots"
+							:key="snapshot.id"
+							class="flex items-center gap-3 px-3 py-3"
+						>
+							<FileArchiveIcon class="size-5 shrink-0 text-[var(--color-text-tertiary)]" />
+							<div class="min-w-0 flex-1">
+								<p class="m-0 font-semibold text-[var(--color-text-primary)]">
+									{{ formatDate(new Date(snapshot.created_at)) }}
+								</p>
+								<p class="m-0 text-sm text-[var(--color-text-tertiary)]">
+									{{
+										formatMessage(messages.snapshotMeta, {
+											files: snapshot.file_count,
+											size: formatBytes(snapshot.logical_size),
+										})
+									}}
+									·
+									{{
+										formatMessage(messages.addedSize, { size: formatBytes(snapshot.added_size) })
+									}}
+								</p>
+							</div>
+							<Button
+								type="quiet"
+								size="2xs"
+								circular
+								icon-only
+								:disabled="action !== null || isRunning"
+								:aria-label="formatMessage(messages.restore)"
+								@click="confirmRestore(snapshot)"
+								><UndoIcon />
+							</Button>
+							<Button
+								type="quiet"
+								color="red"
+								size="2xs"
+								circular
+								icon-only
+								:disabled="action !== null || isRunning"
+								:aria-label="formatMessage(messages.delete)"
+								@click="confirmDelete(snapshot)"
+								><TrashIcon />
+							</Button>
+						</div>
+					</div>
+				</section>
+
+				<div class="flex flex-col items-start gap-2">
+					<Button
+						type="outlined"
+						color="red"
+						:disabled="snapshots.length > 0 || action !== null || isRunning"
+						@click="disable"
+						>{{ formatMessage(messages.disable) }}
+					</Button>
+					<p v-if="snapshots.length > 0" class="m-0 text-sm text-[var(--color-text-tertiary)]">
+						{{ formatMessage(messages.disableBlocked) }}
+					</p>
+				</div>
+			</template>
+		</template>
+
+		<NewModal
+			ref="deleteModal"
+			:header="formatMessage(messages.deleteTitle)"
+			fade="danger"
+			max-width="500px"
+		>
+			<Admonition type="critical">{{ formatMessage(messages.deleteBody) }}</Admonition>
+			<template #actions>
+				<div class="flex items-center justify-end gap-2">
+					<Button
+						type="outlined"
+						:disabled="action?.startsWith('delete:')"
+						@click="deleteModal?.hide()"
+						>{{ formatMessage(commonMessages.cancelButton) }}
+					</Button>
+					<Button
+						type="colored"
+						color="red"
+						:disabled="action?.startsWith('delete:')"
+						@click="removeSnapshot"
+						><TrashIcon />{{ formatMessage(messages.delete) }}
+					</Button>
+				</div>
+			</template>
+		</NewModal>
+		<NewModal ref="restoreModal" :header="formatMessage(messages.restoreTitle)" max-width="500px">
+			<Admonition v-if="restorePreview" type="warning">
+				{{
+					formatMessage(messages.restoreBody, {
+						added: restorePreview.added_files,
+						modified: restorePreview.modified_files,
+						deleted: restorePreview.deleted_files,
+					})
+				}}
+			</Admonition>
+			<template #actions>
+				<div class="flex items-center justify-end gap-2">
+					<Button
+						type="outlined"
+						:disabled="action?.startsWith('restore:')"
+						@click="restoreModal?.hide()"
+						>{{ formatMessage(commonMessages.cancelButton) }}
+					</Button>
+					<Button :disabled="action?.startsWith('restore:')" @click="restoreSnapshot"
+						><UndoIcon />{{ formatMessage(messages.restore) }}
+					</Button>
+				</div>
+			</template>
+		</NewModal>
+	</div>
+</template>

apps/app-frontend/src/components/ui/instance_settings/SyncSettings.vue

@@ -0,0 +1,618 @@
+<script setup lang="ts">
+import { EditIcon } from '@modrinth/assets'
+import {
+	commonMessages,
+	defineMessages,
+	IconButton,
+	injectNotificationManager,
+	Toggle,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, nextTick, onScopeDispose, ref } from 'vue'
+
+import { gameSettingsKeys } from '@/helpers/game-options'
+import {
+	type GlobalSyncedOptions,
+	isSyncedOptionAvailable,
+	set_global_synced_option,
+	type SyncedOption,
+} from '@/helpers/instance'
+import {
+	canSourceMultiplayerServers,
+	gameOptionsSyncSourcesQueryOptions,
+	globalSyncedOptionsQueryOptions,
+	initializedSyncedOptionsQueryOptions,
+	syncedOptionsKeys,
+	syncedServersQueryOptions,
+} from '@/helpers/synced-options'
+import { syncedPackKeys, syncedPackQueryOptions } from '@/helpers/synced-packs'
+import { instanceKeys, instanceListQueryOptions } from '@/pages/instance/query-options'
+
+import SettingsRow from '../settings/SettingsRow.vue'
+import SettingsSection from '../settings/SettingsSection.vue'
+import CommandHistoryModal from '../settings/instances/command-history-modal.vue'
+import SyncedServersModal from '../settings/instances/servers-modal.vue'
+import SyncedPacksModal from '../settings/instances/SyncedPacksModal.vue'
+import SyncSourceModal from '../settings/instances/SyncSourceModal.vue'
+import GameSettingsModal from '../settings/instances/game-settings-modal/index.vue'
+
+const { handleError } = injectNotificationManager()
+const { formatMessage } = useVIntl()
+const queryClient = useQueryClient()
+const syncedPacksModal = ref<InstanceType<typeof SyncedPacksModal>>()
+const commandHistoryModal = ref<InstanceType<typeof CommandHistoryModal>>()
+const syncedServersModal = ref<InstanceType<typeof SyncedServersModal>>()
+const gameSettingsModal = ref<InstanceType<typeof GameSettingsModal> | null>(null)
+
+const messages = defineMessages({
+	globalOptionsTitle: {
+		id: 'app.settings.synced-options.title',
+		defaultMessage: 'Options synced across all instances',
+	},
+	resourcePacks: {
+		id: 'app.settings.synced-options.resource-packs',
+		defaultMessage: 'Sync resource packs',
+	},
+	resourcePacksDescription: {
+		id: 'app.settings.synced-options.resource-packs.description',
+		defaultMessage: 'Use the same resource packs across your instances.',
+	},
+	dataPacks: { id: 'app.settings.synced-options.data-packs', defaultMessage: 'Sync data packs' },
+	dataPacksDescription: {
+		id: 'app.settings.synced-options.data-packs.description',
+		defaultMessage: 'Use the same datapacks across your instances',
+	},
+	packsDisabled: {
+		id: 'app.settings.synced-options.packs.disabled',
+		defaultMessage: 'Enable syncing before editing shared packs.',
+	},
+	gameSettings: {
+		id: 'app.settings.synced-options.game-settings',
+		defaultMessage: 'Sync game options',
+	},
+	gameSettingsDescription: {
+		id: 'app.settings.synced-options.game-settings.description',
+		defaultMessage: 'Use the same game options across your instances.',
+	},
+	gameSettingsButton: {
+		id: 'app.settings.synced-options.game-settings.button',
+		defaultMessage: 'Edit game settings',
+	},
+	gameSettingsDisabledTooltip: {
+		id: 'app.settings.synced-options.game-settings.disabled-tooltip',
+		defaultMessage: 'Enable game settings sync before choosing individual settings.',
+	},
+	noGameOptionsToEdit: {
+		id: 'app.settings.synced-options.game-settings.no-options-to-edit',
+		defaultMessage: "You haven't got any options yet to edit",
+	},
+	multiplayerServers: {
+		id: 'app.settings.synced-options.multiplayer-servers',
+		defaultMessage: 'Sync multiplayer servers',
+	},
+	multiplayerServersDescription: {
+		id: 'app.settings.synced-options.multiplayer-servers.description',
+		defaultMessage: 'Use the same multiplayer servers across your instances.',
+	},
+	commandHistory: {
+		id: 'app.settings.synced-options.command-history',
+		defaultMessage: 'Sync command history',
+	},
+	commandHistoryDescription: {
+		id: 'app.settings.synced-options.command-history.description',
+		defaultMessage: 'Use the same command history across your instances.',
+	},
+	creativeHotbars: {
+		id: 'app.settings.synced-options.creative-hotbars',
+		defaultMessage: 'Sync saved creative hotbars',
+	},
+	creativeHotbarsDescription: {
+		id: 'app.settings.synced-options.creative-hotbars.description',
+		defaultMessage: 'Use the same saved creative hotbars across your instances.',
+	},
+	gameSettingsSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.game-settings-title',
+		defaultMessage: 'Choose game settings source',
+	},
+	multiplayerServersSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.multiplayer-servers-description',
+		defaultMessage:
+			'Choose which instance to copy your multiplayer servers from. These servers are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	multiplayerServersSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.multiplayer-servers-title',
+		defaultMessage: 'Choose multiplayer servers source',
+	},
+	commandHistorySyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.command-history-description',
+		defaultMessage:
+			'Choose which instance to copy your command history from. This history is only used for the initial sync, and you can edit it from any instance afterward.',
+	},
+	commandHistorySyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.command-history-title',
+		defaultMessage: 'Choose command history source',
+	},
+	creativeHotbarsSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.creative-hotbars-description',
+		defaultMessage:
+			'Choose which instance to copy your saved creative hotbars from. These hotbars are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	creativeHotbarsSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.creative-hotbars-title',
+		defaultMessage: 'Choose creative hotbars source',
+	},
+	gameSettingsSyncSourceDescription: {
+		id: 'app.settings.synced-options.choose-sync-source.game-settings-description',
+		defaultMessage:
+			'Choose which instance to copy your game settings from. These settings are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	resourcePacksSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.resource-packs-title',
+		defaultMessage: 'Choose resource packs source',
+	},
+	resourcePacksSyncSourceDescription: {
+		id: 'app.sync-instances-update.choose-source.resource-packs',
+		defaultMessage:
+			'Choose which instance to copy your resource packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	dataPacksSyncSourceTitle: {
+		id: 'app.settings.synced-options.choose-sync-source.data-packs-title',
+		defaultMessage: 'Choose data packs source',
+	},
+	dataPacksSyncSourceDescription: {
+		id: 'app.sync-instances-update.choose-source.data-packs',
+		defaultMessage:
+			'Choose which instance to copy your data packs from. These packs are only used for the initial sync, and you can edit them from any instance afterward.',
+	},
+	noServersSyncedYet: {
+		id: 'app.settings.synced-options.multiplayer-servers.none-synced-yet',
+		defaultMessage: "You haven't synced any servers yet",
+	},
+	noResourcePacksSyncedYet: {
+		id: 'app.settings.synced-options.resource-packs.none-synced-yet',
+		defaultMessage: "You haven't synced any resource packs yet",
+	},
+	noDataPacksSyncedYet: {
+		id: 'app.settings.synced-options.data-packs.none-synced-yet',
+		defaultMessage: "You haven't synced any data packs yet",
+	},
+	noInstancesToEdit: {
+		id: 'app.settings.synced-options.edit.no-instances',
+		defaultMessage: 'Add an instance before editing synced data.',
+	},
+	noSyncedDataToEdit: {
+		id: 'app.settings.synced-options.edit.no-synced-data',
+		defaultMessage: 'Choose a sync source before editing this setting.',
+	},
+})
+
+const globalRows: Array<{
+	option: SyncedOption
+	title: keyof typeof messages
+	description?: keyof typeof messages
+	editable?: 'game-settings' | 'servers' | 'commands' | 'resourcepack' | 'datapack'
+}> = [
+	{
+		option: 'game_options',
+		title: 'gameSettings',
+		description: 'gameSettingsDescription',
+		editable: 'game-settings',
+	},
+	{
+		option: 'multiplayer_servers',
+		title: 'multiplayerServers',
+		description: 'multiplayerServersDescription',
+		editable: 'servers',
+	},
+	{
+		option: 'resource_packs',
+		title: 'resourcePacks',
+		description: 'resourcePacksDescription',
+		editable: 'resourcepack',
+	},
+	{
+		option: 'data_packs',
+		title: 'dataPacks',
+		description: 'dataPacksDescription',
+		editable: 'datapack',
+	},
+	{
+		option: 'command_history',
+		title: 'commandHistory',
+		description: 'commandHistoryDescription',
+		editable: 'commands',
+	},
+	{
+		option: 'creative_hotbars',
+		title: 'creativeHotbars',
+		description: 'creativeHotbarsDescription',
+	},
+]
+
+const availableGlobalRows = globalRows.filter((row) => isSyncedOptionAvailable(row.option))
+
+const defaultGlobalOptions: GlobalSyncedOptions = {
+	resource_packs: false,
+	data_packs: false,
+	game_options: false,
+	command_history: false,
+	multiplayer_servers: false,
+	creative_hotbars: false,
+	screenshots: false,
+}
+
+const globalOptionsQuery = useQuery(globalSyncedOptionsQueryOptions())
+const initializedOptionsQuery = useQuery(initializedSyncedOptionsQueryOptions())
+const gameOptionSourcesQuery = useQuery(gameOptionsSyncSourcesQueryOptions())
+const resourcePacksQuery = useQuery(syncedPackQueryOptions('resourcepack'))
+const dataPacksQuery = useQuery(syncedPackQueryOptions('datapack'))
+const globalOptions = computed(() => globalOptionsQuery.data.value ?? defaultGlobalOptions)
+const initializedOptions = computed(
+	() => initializedOptionsQuery.data.value ?? defaultGlobalOptions,
+)
+const gameOptionSources = computed(() => gameOptionSourcesQuery.data.value ?? [])
+const instancesQuery = useQuery(instanceListQueryOptions())
+const instances = computed(() => instancesQuery.data.value ?? [])
+const serversQuery = useQuery(syncedServersQueryOptions())
+const syncedServers = computed(() => serversQuery.data.value ?? [])
+const eligibleGameOptionSourceIds = computed(
+	() =>
+		new Set(
+			gameOptionSources.value.filter((source) => source.eligible).map((source) => source.source_id),
+		),
+)
+const hasGameOptionsToEdit = computed(
+	() =>
+		initializedOptions.value.game_options ||
+		instances.value.some(
+			(instance) =>
+				instance?.synced_options?.game_options &&
+				eligibleGameOptionSourceIds.value.has(instance.id),
+		),
+)
+const baseOption = ref<SyncedOption | null>(null)
+const baseInstanceId = ref('')
+const baseModal = ref<InstanceType<typeof SyncSourceModal> | null>(null)
+const baseSourcesLoading = computed(() =>
+	baseOption.value === null
+		? false
+		: baseOption.value === 'game_options'
+			? gameOptionSourcesQuery.isPending.value
+			: instancesQuery.isPending.value,
+)
+const baseSourcesError = computed(() =>
+	baseOption.value === 'game_options'
+		? gameOptionSourcesQuery.isError.value && !gameOptionSourcesQuery.data.value
+		: instancesQuery.isError.value && !instancesQuery.data.value,
+)
+let baseSourceGeneration = 0
+
+const baseInstanceTitle = computed(() => {
+	switch (baseOption.value) {
+		case 'game_options':
+			return formatMessage(messages.gameSettingsSyncSourceTitle)
+		case 'multiplayer_servers':
+			return formatMessage(messages.multiplayerServersSyncSourceTitle)
+		case 'command_history':
+			return formatMessage(messages.commandHistorySyncSourceTitle)
+		case 'creative_hotbars':
+			return formatMessage(messages.creativeHotbarsSyncSourceTitle)
+		case 'resource_packs':
+			return formatMessage(messages.resourcePacksSyncSourceTitle)
+		case 'data_packs':
+			return formatMessage(messages.dataPacksSyncSourceTitle)
+		default:
+			return ''
+	}
+})
+
+const baseInstanceDescription = computed(() => {
+	switch (baseOption.value) {
+		case 'game_options':
+			return formatMessage(messages.gameSettingsSyncSourceDescription)
+		case 'multiplayer_servers':
+			return formatMessage(messages.multiplayerServersSyncSourceDescription)
+		case 'command_history':
+			return formatMessage(messages.commandHistorySyncSourceDescription)
+		case 'creative_hotbars':
+			return formatMessage(messages.creativeHotbarsSyncSourceDescription)
+		case 'resource_packs':
+			return formatMessage(messages.resourcePacksSyncSourceDescription)
+		case 'data_packs':
+			return formatMessage(messages.dataPacksSyncSourceDescription)
+		default:
+			return ''
+	}
+})
+
+const baseInstances = computed(() =>
+	baseOption.value === 'game_options'
+		? gameOptionSources.value.map((source) => ({
+				id: source.source_id,
+				name: source.name,
+				icon_path: source.icon_path,
+				eligible: source.eligible,
+			}))
+		: instances.value.map((instance) => ({
+				id: instance.id,
+				name: instance.name,
+				icon_path: instance.icon_path,
+				eligible:
+					!instance.quarantined &&
+					(baseOption.value !== 'multiplayer_servers' || canSourceMultiplayerServers(instance)),
+			})),
+)
+
+async function invalidateSyncedOptions() {
+	await Promise.all([
+		queryClient.invalidateQueries({ queryKey: instanceKeys.all }),
+		queryClient.invalidateQueries({ queryKey: ['instance-synced-options'] }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.global }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.initialized }),
+		queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.gameSources }),
+		queryClient.invalidateQueries({ queryKey: ['worlds'] }),
+		queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+	])
+}
+
+function emptySyncedContentMessage(row: (typeof globalRows)[number]) {
+	if (
+		row.editable === 'servers' &&
+		(instances.value.length === 0 || syncedServers.value.length === 0)
+	) {
+		return messages.noServersSyncedYet
+	}
+	if (row.editable === 'resourcepack' && !resourcePacksQuery.data.value?.length) {
+		return messages.noResourcePacksSyncedYet
+	}
+	if (row.editable === 'datapack' && !dataPacksQuery.data.value?.length) {
+		return messages.noDataPacksSyncedYet
+	}
+}
+
+function canEditGlobalOption(row: (typeof globalRows)[number]): boolean {
+	if (!row.editable || !globalOptions.value[row.option]) return false
+	if (emptySyncedContentMessage(row)) return false
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') return true
+	if (row.editable === 'game-settings') return hasGameOptionsToEdit.value
+	return instances.value.length > 0 && initializedOptions.value[row.option]
+}
+
+function editGlobalOptionTooltip(row: (typeof globalRows)[number]): string {
+	const emptyMessage = emptySyncedContentMessage(row)
+	if (emptyMessage) return formatMessage(emptyMessage)
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') {
+		return formatMessage(
+			globalOptions.value[row.option] ? commonMessages.editButton : messages.packsDisabled,
+		)
+	}
+	if (row.editable === 'game-settings') {
+		if (!hasGameOptionsToEdit.value) return formatMessage(messages.noGameOptionsToEdit)
+		if (!globalOptions.value[row.option]) {
+			return formatMessage(messages.gameSettingsDisabledTooltip)
+		}
+		return formatMessage(messages.gameSettingsButton)
+	}
+	if (instances.value.length === 0) {
+		return formatMessage(messages.noInstancesToEdit)
+	}
+	if (!initializedOptions.value[row.option]) {
+		return formatMessage(messages.noSyncedDataToEdit)
+	}
+	return formatMessage(commonMessages.editButton)
+}
+
+type GlobalOptionMutationVariables = {
+	option: SyncedOption
+	enabled: boolean
+	baseInstanceId?: string
+}
+
+const globalOptionMutation = useMutation({
+	mutationKey: syncedOptionsKeys.set,
+	mutationFn: ({ option, enabled, baseInstanceId }: GlobalOptionMutationVariables) =>
+		set_global_synced_option(option, enabled, baseInstanceId),
+	onError: handleError,
+	onSuccess: async (options, { option, enabled }) => {
+		queryClient.setQueryData(syncedOptionsKeys.global, options)
+		if (option === 'game_options') {
+			await queryClient.invalidateQueries({ queryKey: gameSettingsKeys.synced })
+		}
+		if (enabled && option === 'multiplayer_servers') {
+			await queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.servers })
+		}
+	},
+	onSettled: async (_data, _error, { option }) => {
+		if (queryClient.isMutating({ mutationKey: syncedOptionsKeys.set }) === 1) {
+			if (option === 'resource_packs' || option === 'data_packs') {
+				void Promise.all([
+					queryClient.invalidateQueries({ queryKey: instanceKeys.all }),
+					queryClient.invalidateQueries({ queryKey: ['instance-synced-options'] }),
+					queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.global }),
+					queryClient.invalidateQueries({ queryKey: syncedOptionsKeys.initialized }),
+					queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+				])
+				return
+			}
+			await invalidateSyncedOptions()
+		}
+	},
+})
+
+const canToggleGlobalOptions = computed(
+	() =>
+		!!globalOptionsQuery.data.value &&
+		!globalOptionMutation.isPending.value &&
+		!baseSourcesLoading.value,
+)
+
+async function chooseBaseInstance(option: SyncedOption) {
+	const generation = ++baseSourceGeneration
+	baseOption.value = option
+	baseInstanceId.value = ''
+
+	try {
+		if (option === 'game_options') {
+			await queryClient.fetchQuery(gameOptionsSyncSourcesQueryOptions())
+		} else {
+			await queryClient.fetchQuery({ ...instanceListQueryOptions(), staleTime: 0 })
+		}
+	} catch (error) {
+		if (generation !== baseSourceGeneration) return
+		handleError(error)
+		baseModal.value?.show()
+		return
+	}
+
+	if (generation !== baseSourceGeneration) return
+	const eligibleSources = baseInstances.value.filter((source) => source.eligible)
+	baseInstanceId.value = eligibleSources[0]?.id ?? ''
+	if (eligibleSources.length > 1) {
+		baseModal.value?.show()
+		return
+	}
+
+	try {
+		await globalOptionMutation.mutateAsync({
+			option,
+			enabled: true,
+			baseInstanceId: eligibleSources[0]?.id,
+		})
+		await nextTick()
+		if (!baseModal.value?.hide()) clearBaseSource()
+	} catch {
+		return
+	}
+}
+
+function toggleGlobalOption(option: SyncedOption, enabled: boolean) {
+	if (!isSyncedOptionAvailable(option) || !canToggleGlobalOptions.value) return
+	if (enabled && option !== 'screenshots') {
+		void chooseBaseInstance(option)
+		return
+	}
+	globalOptionMutation.mutate({ option, enabled })
+}
+
+async function confirmBaseInstance() {
+	if (!baseOption.value || !baseInstanceId.value) return
+	try {
+		await globalOptionMutation.mutateAsync({
+			option: baseOption.value,
+			enabled: true,
+			baseInstanceId: baseInstanceId.value,
+		})
+		await nextTick()
+		baseModal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+function editGlobalOption(row: (typeof globalRows)[number]) {
+	if (!isSyncedOptionAvailable(row.option)) return
+	if (row.editable === 'resourcepack' || row.editable === 'datapack') {
+		void syncedPacksModal.value?.show(row.editable)
+	} else if (row.editable === 'game-settings') {
+		openGameSettings()
+	} else if (row.editable === 'commands') {
+		void commandHistoryModal.value?.show()
+	} else {
+		void syncedServersModal.value?.show()
+	}
+}
+
+function openGameSettings() {
+	if (!hasGameOptionsToEdit.value) return
+	gameSettingsModal.value?.show()
+}
+
+async function handleGameSettingsSaved() {
+	await invalidateSyncedOptions()
+}
+
+
+
+function clearBaseSource() {
+	baseSourceGeneration++
+	baseOption.value = null
+}
+
+onScopeDispose(clearBaseSource)
+</script>
+
+<template>
+	<div class="flex flex-col gap-6">
+		<SyncedPacksModal ref="syncedPacksModal" />
+		<CommandHistoryModal ref="commandHistoryModal" />
+		<SyncedServersModal ref="syncedServersModal" />
+		<GameSettingsModal ref="gameSettingsModal" @saved="handleGameSettingsSaved" />
+
+		<SyncSourceModal
+			ref="baseModal"
+			v-model="baseInstanceId"
+			:title="baseInstanceTitle"
+			:description="baseInstanceDescription"
+			:sources="baseInstances"
+			:loading="baseSourcesLoading"
+			:error="baseSourcesError"
+			:pending="globalOptionMutation.isPending.value"
+			@confirm="confirmBaseInstance"
+			@close="clearBaseSource"
+			@retry="baseOption && chooseBaseInstance(baseOption)"
+		/>
+
+		<SettingsSection>
+			<template #header>
+				<h2
+					id="settings-target-instance-sync-options"
+					tabindex="-1"
+					class="m-0 text-lg font-semibold text-[var(--color-text-primary)]"
+				>
+					{{ formatMessage(messages.globalOptionsTitle) }}
+				</h2>
+			</template>
+			<SettingsRow v-for="row in availableGlobalRows" :key="row.option">
+				<template #label>
+					<span :id="`settings-target-instance-sync-${row.option}`" tabindex="-1">
+						{{ formatMessage(messages[row.title]) }}
+					</span>
+				</template>
+				<template v-if="row.description" #description>
+					{{ formatMessage(messages[row.description]) }}
+				</template>
+				<template #control>
+					<span v-if="row.editable" v-tooltip="editGlobalOptionTooltip(row)" class="flex">
+						<IconButton
+							type="outlined"
+							circular
+							:disabled="
+								!canEditGlobalOption(row) ||
+								initializedOptionsQuery.isPending.value ||
+								globalOptionMutation.isPending.value
+							"
+							:label="
+								formatMessage(
+									row.editable === 'game-settings'
+										? messages.gameSettingsButton
+										: commonMessages.editButton,
+								)
+							"
+							@click="editGlobalOption(row)"
+						>
+							<EditIcon aria-hidden="true" />
+						</IconButton>
+					</span>
+					<Toggle
+						:id="`global-sync-${row.option}`"
+						:model-value="globalOptions[row.option]"
+						:disabled="!canToggleGlobalOptions"
+						:aria-label="formatMessage(messages[row.title])"
+						@update:model-value="(enabled) => toggleGlobalOption(row.option, enabled)"
+					/>
+				</template>
+			</SettingsRow>
+		</SettingsSection>
+	</div>
+</template>

apps/app-frontend/src/components/ui/modal/BatchEditGroupsModal.vue

@@ -61,6 +61,7 @@ import {
 	ButtonStyled,
 	commonMessages,
 	defineMessages,
+	injectNotificationManager,
 	NewModal,
 	RadioButtons,
 	StyledInput,
@@ -72,6 +73,7 @@ import { edit, list } from '@/helpers/instance'
 import type { GameInstance } from '@/helpers/types'
 
 const { formatMessage } = useVIntl()
+const { handleError } = injectNotificationManager()
 
 const props = defineProps<{
 	instanceIds: string[]
@@ -148,7 +150,7 @@ async function deleteGroup(group: string) {
 	for (const instance of allInstances.value) {
 		if (instance.groups.includes(group)) {
 			const newGroups = instance.groups.filter((g) => g !== group)
-			await edit(instance.id, { groups: newGroups }).catch(() => {})
+			await edit(instance.id, { groups: newGroups }).catch(handleError)
 			instance.groups = newGroups
 		}
 	}
@@ -167,7 +169,7 @@ async function confirm() {
 	const groups = selectedGroup.value ? [selectedGroup.value.trim().substring(0, 32)] : []
 
 	for (const instanceId of props.instanceIds) {
-		await edit(instanceId, { groups }).catch(() => {})
+		await edit(instanceId, { groups }).catch(handleError)
 	}
 
 	emit('applied')

apps/app-frontend/src/components/ui/modal/InstanceSettingsModal.vue

@@ -7,6 +7,7 @@ import {
 	FileArchiveIcon,
 	InfoIcon,
 	MonitorIcon,
+	RefreshCwIcon,
 	WrenchIcon,
 } from '@modrinth/assets'
 import {
@@ -20,8 +21,10 @@ import type { PlatformTag } from '@modrinth/utils'
 import { useQuery, useQueryClient } from '@tanstack/vue-query'
 import { computed, nextTick, ref, watch } from 'vue'
 
+import BackupSettings from '@/components/ui/instance_settings/BackupSettings.vue'
 import CoreComponentsSettings from '@/components/ui/instance_settings/CoreComponentsSettings.vue'
 import GeneralSettings from '@/components/ui/instance_settings/GeneralSettings.vue'
+import SyncSettings from '@/components/ui/instance_settings/SyncSettings.vue'
 import HooksSettings from '@/components/ui/instance_settings/HooksSettings.vue'
 import InstallationSettings from '@/components/ui/instance_settings/InstallationSettings.vue'
 import JavaSettings from '@/components/ui/instance_settings/JavaSettings.vue'
@@ -52,8 +55,9 @@ let serverMetadataGeneration = 0
 const instanceRef = computed(() => props.instance)
 const tabbedModal = ref<InstanceType<typeof TabbedModal> | null>(null)
 
-function hide() {
+function hide(onAfterClose?: () => void) {
 	tabbedModal.value?.hide()
+	if (onAfterClose) nextTick(onAfterClose)
 }
 
 provideInstanceSettings({
@@ -105,6 +109,14 @@ const tabs = computed<TabbedModalTab[]>(() => [
 		icon: WrenchIcon,
 		content: InstallationSettings,
 	},
+	{
+		name: defineMessage({
+			id: 'instance.settings.tabs.backups',
+			defaultMessage: 'Backups',
+		}),
+		icon: FileArchiveIcon,
+		content: BackupSettings,
+	},
 	{
 		// Core component editing is instance-specific and advanced, so it is intentionally excluded from first-run onboarding.
 		name: defineMessage({
@@ -138,6 +150,14 @@ const tabs = computed<TabbedModalTab[]>(() => [
 		icon: CodeIcon,
 		content: HooksSettings,
 	},
+	{
+		name: defineMessage({
+			id: 'instance.settings.tabs.sync',
+			defaultMessage: 'Sync',
+		}),
+		icon: RefreshCwIcon,
+		content: SyncSettings,
+	},
 ])
 
 function getSupportedModpackLoaders() {

apps/app-frontend/src/components/ui/onboarding/OnboardingDialogue.vue

@@ -35,7 +35,7 @@ const progressWidth = computed(() => `${Math.min(100, (props.current / props.tot
 					<h2 :id="`onboarding-title-${step.id}`">{{ formatMessage(step.title) }}</h2>
 				</div>
 				<ButtonStyled circular type="transparent">
-					<button :aria-label="formatMessage(onboardingMessages.skip)" @click.stop="$emit('skip')">
+					<button data-onboarding-skip :aria-label="formatMessage(onboardingMessages.skip)" @click.stop="$emit('skip')">
 						<XIcon />
 					</button>
 				</ButtonStyled>

apps/app-frontend/src/components/ui/onboarding/onboardingConfig.ts

@@ -252,6 +252,42 @@ export const onboardingMessages = defineMessages({
 		id: 'app.onboarding.instance-tabs.description',
 		defaultMessage: 'Use these tabs for content, files, screenshots, worlds, and logs. Tidy chaos.',
 	},
+	instanceContentTabTitle: {
+		id: 'app.onboarding.instance-content-tab.title',
+		defaultMessage: 'Content',
+	},
+	instanceContentTabDescription: {
+		id: 'app.onboarding.instance-content-tab.description',
+		defaultMessage:
+			'Manage this instance’s mods, resource packs, and shaders here. Search, enable or disable entries, check for updates, and browse for more.',
+	},
+	instanceFilesTabTitle: {
+		id: 'app.onboarding.instance-files-tab.title',
+		defaultMessage: 'Files',
+	},
+	instanceFilesTabDescription: {
+		id: 'app.onboarding.instance-files-tab.description',
+		defaultMessage:
+			'Browse the instance folder and open configs or logs in the built-in editor without leaving the launcher.',
+	},
+	instanceWorldsTabTitle: {
+		id: 'app.onboarding.instance-worlds-tab.title',
+		defaultMessage: 'Worlds',
+	},
+	instanceWorldsTabDescription: {
+		id: 'app.onboarding.instance-worlds-tab.description',
+		defaultMessage:
+			'Manage saved worlds: back them up, rename, edit world settings, and open the world folder.',
+	},
+	instanceLogsTabTitle: {
+		id: 'app.onboarding.instance-logs-tab.title',
+		defaultMessage: 'Logs',
+	},
+	instanceLogsTabDescription: {
+		id: 'app.onboarding.instance-logs-tab.description',
+		defaultMessage:
+			'Read the instance’s live logs to trace crashes and errors without digging through files.',
+	},
 	labTitle: {
 		id: 'app.onboarding.lab.title',
 		defaultMessage: 'Useful tools, built in',
@@ -509,15 +545,29 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 			onboardingMessages.instanceActionsTitle,
 			onboardingMessages.instanceActionsDescription,
 		),
-		step(
+		inspect(
-			'instance-tabs',
+			'instance-content-tab',
-			'inspect',
+			'instance-tab-content',
-			copy(
+			onboardingMessages.instanceContentTabTitle,
-				onboardingMessages.instanceTabsTitle,
+			onboardingMessages.instanceContentTabDescription,
-				onboardingMessages.instanceTabsDescription,
+		),
-				onboardingMessages.finishArea,
+		inspect(
-			),
+			'instance-files-tab',
-			{ targetId: 'instance-tabs' },
+			'instance-tab-files',
+			onboardingMessages.instanceFilesTabTitle,
+			onboardingMessages.instanceFilesTabDescription,
+		),
+		inspect(
+			'instance-worlds-tab',
+			'instance-tab-worlds',
+			onboardingMessages.instanceWorldsTabTitle,
+			onboardingMessages.instanceWorldsTabDescription,
+		),
+		inspect(
+			'instance-logs-tab',
+			'instance-tab-logs',
+			onboardingMessages.instanceLogsTabTitle,
+			onboardingMessages.instanceLogsTabDescription,
 		),
 	],
 }

apps/app-frontend/src/components/ui/onboarding/useOnboardingTour.ts

@@ -279,8 +279,11 @@ export function useOnboardingTour(
 	function handleDocumentClick(event: MouseEvent) {
 		if (!visible.value) return
 		const clickedElement = event.target instanceof Element ? event.target : null
-		if (clickedElement?.closest('[data-onboarding-overlay-ui]')) return
 
+		// 跳过/关闭按钮由其自身处理，不在全局点击里推进
+		if (clickedElement?.closest('[data-onboarding-skip]')) return
+
+		// inspect 步：点击任意位置（含导览气泡本身）都继续下一步
 		if (step.value.interaction === 'inspect') {
 			event.preventDefault()
 			event.stopImmediatePropagation()
@@ -288,6 +291,9 @@ export function useOnboardingTour(
 			return
 		}
 
+		// 非 inspect 步：点在导览 UI 自身时不处理
+		if (clickedElement?.closest('[data-onboarding-overlay-ui]')) return
+
 		if (!step.value.targetId || !['navigate', 'activate'].includes(step.value.interaction)) return
 		if (clickedElement && handleBranchClick(clickedElement)) return
 		if (!targetElement.value?.contains(event.target as Node)) return

apps/app-frontend/src/components/ui/screenshots-page/index.vue

@@ -21,7 +21,6 @@ import {
 import {
 	Avatar,
 	Button,
-	type ButtonMenuOption,
 	type ComboboxOption,
 	commonMessages,
 	ConfirmModal,
@@ -1038,7 +1037,6 @@ function activateScreenshot(screenshot: InstanceScreenshot, event: MouseEvent |
 		(candidate) => getSelectionKey(candidate) === getSelectionKey(screenshot),
 	)
 	if (index >= 0) {
-		screenshotOptionsMenu.value?.close()
 		imageViewer.value?.show(index)
 	}
 }
@@ -1055,44 +1053,34 @@ function requestDelete(screenshot: InstanceScreenshot, fromPreview = false) {
 
 function showScreenshotOptions(screenshot: InstanceScreenshot, event: MouseEvent) {
 	screenshotOptionsTarget.value = screenshot
-	const options: ButtonMenuOption[] = [
+	const options = [
-		...(event.type === 'contextmenu'
+		...(event.type === 'contextmenu' ? [{ name: 'edit' }, { name: 'copy' }] : []),
-			? [
+		{ name: 'open' },
-					{
+		{ name: 'go-to-instance' },
-						id: 'edit',
-						label: formatMessage(messages.edit),
-						icon: EditIcon,
-						action: () => editScreenshot(screenshot),
-					},
-					{
-						id: 'copy',
-						label: formatMessage(messages.copy),
-						icon: ClipboardCopyIcon,
-						action: () => void copyScreenshot(screenshot),
-					},
-				]
-			: []),
-		{
-			id: 'open',
-			label: formatMessage(messages.showInFolder),
-			icon: FolderOpenIcon,
-			action: () => void openScreenshot(screenshot),
-		},
-		{
-			id: 'go-to-instance',
-			label: formatMessage(messages.goToInstance),
-			action: () => void goToInstance(screenshot),
-		},
 		{ type: 'divider' },
-		{
+		{ name: 'delete', color: 'danger' },
-			id: 'delete',
-			label: formatMessage(commonMessages.deleteLabel),
-			icon: TrashIcon,
-			tone: 'red',
-			action: () => requestDelete(screenshot),
-		},
 	]
-	screenshotOptionsMenu.value?.open(event, options)
+	screenshotOptionsMenu.value?.showMenu(event, screenshot, options)
+}
+
+function handleScreenshotOptionClicked({ item, option }: { item: InstanceScreenshot; option: string }) {
+	switch (option) {
+		case 'edit':
+			editScreenshot(item)
+			break
+		case 'copy':
+			void copyScreenshot(item)
+			break
+		case 'open':
+			void openScreenshot(item)
+			break
+		case 'go-to-instance':
+			void goToInstance(item)
+			break
+		case 'delete':
+			requestDelete(item)
+			break
+	}
 }
 
 function goToInstance(screenshot: InstanceScreenshot) {
@@ -1128,7 +1116,6 @@ function editScreenshot(screenshot: InstanceScreenshot) {
 		(candidate) => getSelectionKey(candidate) === getSelectionKey(screenshot),
 	)
 	if (index >= 0) {
-		screenshotOptionsMenu.value?.close()
 		void imageViewer.value?.edit(index)
 	}
 }
@@ -1426,7 +1413,23 @@ onBeforeUnmount(() => {
 		:markdown="false"
 		@proceed="deleteCustomGroup"
 	/>
-	<ContextMenu ref="screenshotOptionsMenu" :label="formatMessage(commonMessages.actionsLabel)">
+	<ContextMenu
+		ref="screenshotOptionsMenu"
+		:label="formatMessage(commonMessages.actionsLabel)"
+		@option-clicked="handleScreenshotOptionClicked"
+	>
+		<template #edit>
+			<EditIcon />
+			{{ formatMessage(messages.edit) }}
+		</template>
+		<template #copy>
+			<ClipboardCopyIcon />
+			{{ formatMessage(messages.copy) }}
+		</template>
+		<template #open>
+			<FolderOpenIcon />
+			{{ formatMessage(messages.showInFolder) }}
+		</template>
 		<template #go-to-instance>
 			<Avatar
 				:src="getInstanceIconUrl(screenshotOptionsInstance?.icon_path)"
@@ -1437,6 +1440,10 @@ onBeforeUnmount(() => {
 			/>
 			{{ formatMessage(messages.goToInstance) }}
 		</template>
+		<template #delete>
+			<TrashIcon />
+			{{ formatMessage(commonMessages.deleteLabel) }}
+		</template>
 	</ContextMenu>
 	<ImageViewerEditor
 		ref="imageViewer"

apps/app-frontend/src/components/ui/settings/AppearanceSettings.vue

@@ -22,7 +22,7 @@ import { convertFileSrc } from '@tauri-apps/api/core'
 import { appDataDir, join } from '@tauri-apps/api/path'
 import { open } from '@tauri-apps/plugin-dialog'
 import { exists, mkdir, readFile, remove, writeFile } from '@tauri-apps/plugin-fs'
-import { computed, ref, watch } from 'vue'
+import { computed, onMounted, ref, watch } from 'vue'
 
 import { get, set } from '@/helpers/settings.ts'
 import { getOS } from '@/helpers/utils'
@@ -41,6 +41,19 @@ import {
 	parseCustomAccentColor,
 } from '@/store/theme.ts'
 
+import {
+	buildFontFamilyOptions,
+	canonicalFontFamily,
+	DEFAULT_MONO_FONT_STACK,
+	DEFAULT_UI_FONT_STACK,
+	type FontFamilyOption,
+	type FontFamilyOptionOrDivider,
+	optionValueToFontSetting,
+	resolveFontFamily,
+	type SystemFontFamily,
+} from '@/helpers/font-family.ts'
+import { getSystemFontFamilies } from '@/helpers/system-fonts.ts'
+
 import SettingsRow from './SettingsRow.vue'
 import SettingsSection from './SettingsSection.vue'
 
@@ -363,6 +376,63 @@ const messages = defineMessages({
 		defaultMessage:
 			'Hide the downloads button in the sidebar when there are no active download tasks.',
 	},
+	fontsTitle: { id: 'app.appearance-settings.fonts.title', defaultMessage: 'Fonts' },
+	fontsDescription: {
+		id: 'app.appearance-settings.fonts.description',
+		defaultMessage: 'Choose the fonts the launcher interface and its logs are rendered in.',
+	},
+	uiFontTitle: { id: 'app.appearance-settings.fonts.ui-font', defaultMessage: 'Interface font' },
+	uiFontDescription: {
+		id: 'app.appearance-settings.fonts.ui-font-description',
+		defaultMessage:
+			'Used across the launcher interface. Only fonts installed on this system are listed.',
+	},
+	monoFontTitle: {
+		id: 'app.appearance-settings.fonts.mono-font',
+		defaultMessage: 'Monospace font',
+	},
+	monoFontDescription: {
+		id: 'app.appearance-settings.fonts.mono-font-description',
+		defaultMessage: 'Used for logs, the server console, and other monospace content.',
+	},
+	fontDefault: {
+		id: 'app.appearance-settings.fonts.default',
+		defaultMessage: 'Launcher default',
+	},
+	fontMonospace: {
+		id: 'app.appearance-settings.fonts.monospace',
+		defaultMessage: 'Monospace',
+	},
+	fontMissing: {
+		id: 'app.appearance-settings.fonts.missing',
+		defaultMessage: 'Not installed',
+	},
+	fontSearchPlaceholder: {
+		id: 'app.appearance-settings.fonts.search-placeholder',
+		defaultMessage: 'Search installed fonts',
+	},
+	fontNoResults: {
+		id: 'app.appearance-settings.fonts.no-results',
+		defaultMessage: 'No matching fonts',
+	},
+	fontLoadFailed: {
+		id: 'app.appearance-settings.fonts.load-failed',
+		defaultMessage: "Couldn't read the list of installed fonts.",
+	},
+	fontRetry: { id: 'app.appearance-settings.fonts.retry', defaultMessage: 'Retry' },
+	fontReset: {
+		id: 'app.appearance-settings.fonts.reset',
+		defaultMessage: 'Reset',
+	},
+	fontPreviewLabel: { id: 'app.appearance-settings.fonts.preview', defaultMessage: 'Preview' },
+	fontUiPreviewSample: {
+		id: 'app.appearance-settings.fonts.ui-preview-sample',
+		defaultMessage: 'The quick brown fox jumps over the lazy dog.',
+	},
+	fontMonoPreviewSample: {
+		id: 'app.appearance-settings.fonts.mono-preview-sample',
+		defaultMessage: 'const x = () => 0; // monospace',
+	},
 })
 
 const os = ref(await getOS())
@@ -373,6 +443,78 @@ const customBackgroundPreview = computed(() =>
 		: null,
 )
 
+const systemFonts = ref<SystemFontFamily[]>([])
+const systemFontsLoading = ref(true)
+const systemFontsFailed = ref(false)
+
+async function loadSystemFonts() {
+	systemFontsLoading.value = true
+	systemFontsFailed.value = false
+
+	try {
+		systemFonts.value = await getSystemFontFamilies()
+	} catch (error) {
+		systemFontsFailed.value = true
+		console.warn('Failed to read the list of installed fonts', error)
+	} finally {
+		systemFontsLoading.value = false
+	}
+}
+
+function selectedOptionLabel(options: FontFamilyOptionOrDivider[], value: string): string {
+	const option = options.find(
+		(entry): entry is FontFamilyOption => 'value' in entry && entry.value === value,
+	)
+
+	return option?.label ?? ''
+}
+
+const uiFontOptions = computed<FontFamilyOptionOrDivider[]>(() =>
+	buildFontFamilyOptions(systemFonts.value, {
+		defaultLabel: formatMessage(messages.fontDefault),
+		missingLabel: formatMessage(messages.fontMissing),
+		selected: settings.value.ui_font,
+	}),
+)
+
+const monoFontOptions = computed<FontFamilyOptionOrDivider[]>(() =>
+	buildFontFamilyOptions(systemFonts.value, {
+		defaultLabel: formatMessage(messages.fontDefault),
+		missingLabel: formatMessage(messages.fontMissing),
+		monospaceLabel: formatMessage(messages.fontMonospace),
+		selected: settings.value.mono_font,
+		groupMonospaced: true,
+	}),
+)
+
+const uiFontSelection = computed({
+	get: () => canonicalFontFamily(systemFonts.value, settings.value.ui_font),
+	set: (value: string) => {
+		settings.value.ui_font = optionValueToFontSetting(value)
+	},
+})
+
+const monoFontSelection = computed({
+	get: () => canonicalFontFamily(systemFonts.value, settings.value.mono_font),
+	set: (value: string) => {
+		settings.value.mono_font = optionValueToFontSetting(value)
+	},
+})
+
+const uiFontSearchValue = computed(() =>
+	selectedOptionLabel(uiFontOptions.value, uiFontSelection.value),
+)
+const monoFontSearchValue = computed(() =>
+	selectedOptionLabel(monoFontOptions.value, monoFontSelection.value),
+)
+
+const uiFontPreview = computed(() =>
+	resolveFontFamily(settings.value.ui_font, DEFAULT_UI_FONT_STACK),
+)
+const monoFontPreview = computed(() =>
+	resolveFontFamily(settings.value.mono_font, DEFAULT_MONO_FONT_STACK),
+)
+
 function updateUiScale(value: number) {
 	const clamped = Math.min(200, Math.max(50, Math.round(value)))
 	setUiScale(clamped)
@@ -489,6 +631,8 @@ watch(
 			settings.value.transparent_background_blur,
 			settings.value.sidebar_instance_count,
 			settings.value.close_behavior,
+			settings.value.ui_font,
+			settings.value.mono_font,
 		] as const,
 	([
 		path,
@@ -499,6 +643,8 @@ watch(
 		transparentBlur,
 		sidebarInstanceCount,
 		closeBehavior,
+		uiFont,
+		monoFont,
 	]) => {
 		themeStore.customBackgroundPath = path
 		themeStore.customBackgroundBlur = blur
@@ -509,10 +655,19 @@ watch(
 		themeStore.setTransparentBackgroundClass()
 		themeStore.sidebarInstanceCount = sidebarInstanceCount
 		themeStore.closeBehavior = closeBehavior as CloseBehavior
+		themeStore.uiFont = uiFont
+		themeStore.monoFont = monoFont
+		themeStore.setUiFont()
+		themeStore.setMonoFont()
 	},
 	{ immediate: true },
 )
 
+onMounted(() => {
+	if (props.scope === 'interface') {
+		void loadSystemFonts()
+	}
+})
 watch(
 	settings,
 	async () => {
@@ -1148,6 +1303,118 @@ watch(
 			</SettingsRow>
 		</SettingsSection>
 
+		<SettingsSection v-if="props.scope === 'interface'">
+			<template #header>
+				<h2
+					id="settings-target-appearance-fonts"
+					tabindex="-1"
+					class="m-0 text-lg font-semibold text-contrast"
+				>
+					{{ formatMessage(messages.fontsTitle) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm leading-relaxed text-secondary">
+					{{ formatMessage(messages.fontsDescription) }}
+				</p>
+			</template>
+			<SettingsRow stacked>
+				<template #label>
+					<span id="settings-target-appearance-ui-font" tabindex="-1">
+						{{ formatMessage(messages.uiFontTitle) }}
+					</span>
+				</template>
+				<template #description>{{ formatMessage(messages.uiFontDescription) }}</template>
+				<template #control>
+					<div class="flex w-full flex-col gap-3">
+						<div class="flex items-center gap-2">
+							<div class="min-w-0 flex-1">
+								<Combobox
+									v-model="uiFontSelection"
+									:options="uiFontOptions"
+									searchable
+									:search-value="uiFontSearchValue"
+									:search-placeholder="formatMessage(messages.fontSearchPlaceholder)"
+									:no-options-message="formatMessage(messages.fontNoResults)"
+									show-no-options-when-empty
+									:disabled="systemFontsLoading"
+								/>
+							</div>
+							<Button
+								type="quiet"
+								:disabled="settings.ui_font === null"
+								@click="settings.ui_font = null"
+							>
+								{{ formatMessage(messages.fontReset) }}
+							</Button>
+						</div>
+						<div class="flex flex-col gap-1">
+							<span class="text-xs text-secondary">
+								{{ formatMessage(messages.fontPreviewLabel) }}
+							</span>
+							<div
+								class="rounded-[var(--radius-md)] bg-surface-3 px-3 py-2 text-base text-contrast"
+								:style="{ fontFamily: uiFontPreview }"
+							>
+								{{ formatMessage(messages.fontUiPreviewSample) }}
+							</div>
+						</div>
+					</div>
+				</template>
+			</SettingsRow>
+			<SettingsRow stacked>
+				<template #label>
+					<span id="settings-target-appearance-mono-font" tabindex="-1">
+						{{ formatMessage(messages.monoFontTitle) }}
+					</span>
+				</template>
+				<template #description>{{ formatMessage(messages.monoFontDescription) }}</template>
+				<template #control>
+					<div class="flex w-full flex-col gap-3">
+						<div class="flex items-center gap-2">
+							<div class="min-w-0 flex-1">
+								<Combobox
+									v-model="monoFontSelection"
+									:options="monoFontOptions"
+									searchable
+									:search-value="monoFontSearchValue"
+									:search-placeholder="formatMessage(messages.fontSearchPlaceholder)"
+									:no-options-message="formatMessage(messages.fontNoResults)"
+									show-no-options-when-empty
+									:disabled="systemFontsLoading"
+								/>
+							</div>
+							<Button
+								type="quiet"
+								:disabled="settings.mono_font === null"
+								@click="settings.mono_font = null"
+							>
+								{{ formatMessage(messages.fontReset) }}
+							</Button>
+						</div>
+						<div class="flex flex-col gap-1">
+							<span class="text-xs text-secondary">
+								{{ formatMessage(messages.fontPreviewLabel) }}
+							</span>
+							<div
+								class="rounded-[var(--radius-md)] bg-surface-3 px-3 py-2 text-xs text-contrast"
+								:style="{ fontFamily: monoFontPreview }"
+							>
+								{{ formatMessage(messages.fontMonoPreviewSample) }}
+							</div>
+						</div>
+					</div>
+				</template>
+			</SettingsRow>
+			<div
+				v-if="systemFontsFailed"
+				class="flex items-center justify-between gap-3 px-4 pb-4 text-sm text-secondary"
+			>
+				<span>{{ formatMessage(messages.fontLoadFailed) }}</span>
+				<Button type="quiet" @click="loadSystemFonts">
+					{{ formatMessage(messages.fontRetry) }}
+				</Button>
+			</div>
+		</SettingsSection>
+
 		<SettingsSection v-if="props.scope === 'content-downloads'">
 			<SettingsRow>
 				<template #label>

apps/app-frontend/src/components/ui/settings/BackupRepositorySettings.vue

@@ -0,0 +1,167 @@
+<script setup lang="ts">
+import { FolderIcon } from '@modrinth/assets'
+import {
+	Admonition,
+	Button,
+	defineMessages,
+	injectFilePicker,
+	injectNotificationManager,
+	useFormatBytes,
+	useVIntl,
+} from '@modrinth/ui'
+import { onMounted, onUnmounted, ref } from 'vue'
+
+import {
+	type BackupRepositoryStatus,
+	getBackupRepositoryStatus,
+	listBackupOperations,
+	listenBackupProgress,
+	moveBackupRepository,
+} from '@/helpers/instance-backup'
+
+import SettingsRow from './SettingsRow.vue'
+import SettingsSection from './SettingsSection.vue'
+
+const { formatMessage } = useVIntl()
+const formatBytes = useFormatBytes()
+const filePicker = injectFilePicker()
+const { handleError } = injectNotificationManager()
+const status = ref<BackupRepositoryStatus | null>(null)
+const loading = ref(true)
+const moving = ref(false)
+const movedBytes = ref(0)
+const moveTotalBytes = ref(0)
+const movingOperationId = ref<string | null>(null)
+let unlisten: (() => void) | null = null
+
+const messages = defineMessages({
+	title: { id: 'settings.backups.repository.title', defaultMessage: 'Backup repository' },
+	description: {
+		id: 'settings.backups.repository.description',
+		defaultMessage: 'Deduplicated instance backup data and its independent index database.',
+	},
+	location: { id: 'settings.backups.repository.location', defaultMessage: 'Location' },
+	locationDescription: {
+		id: 'settings.backups.repository.location-description',
+		defaultMessage:
+			'Changing the location moves the complete repository. Choose a new or empty folder.',
+	},
+	change: { id: 'settings.backups.repository.change', defaultMessage: 'Change folder' },
+	moving: { id: 'settings.backups.repository.moving', defaultMessage: 'Moving repository...' },
+	movingProgress: {
+		id: 'settings.backups.repository.moving-progress',
+		defaultMessage: 'Moving repository: {processed} of {total}',
+	},
+	usage: { id: 'settings.backups.repository.usage', defaultMessage: 'Storage usage' },
+	usageDescription: {
+		id: 'settings.backups.repository.usage-description',
+		defaultMessage:
+			'{stored} stored for {logical} of backup data across {count, plural, one {# snapshot} other {# snapshots}}.',
+	},
+	unavailable: {
+		id: 'settings.backups.repository.unavailable',
+		defaultMessage: 'Repository unavailable',
+	},
+})
+
+async function refresh() {
+	loading.value = true
+	try {
+		status.value = await getBackupRepositoryStatus()
+	} catch (error) {
+		handleError(error)
+	} finally {
+		loading.value = false
+	}
+}
+
+async function changeLocation() {
+	const selection = await filePicker.pickFolder?.()
+	if (!selection) return
+	moving.value = true
+	movedBytes.value = 0
+	moveTotalBytes.value = 0
+	try {
+		movingOperationId.value = await moveBackupRepository(selection.path)
+	} catch (error) {
+		handleError(error)
+		moving.value = false
+	}
+}
+
+onMounted(async () => {
+	unlisten = await listenBackupProgress((event) => {
+		if (event.operationType !== 'repository_move') return
+		if (movingOperationId.value && event.operationId !== movingOperationId.value) return
+		movingOperationId.value = event.operationId
+		moving.value = !event.finalState
+		movedBytes.value = event.processedBytes
+		moveTotalBytes.value = event.totalBytes
+		if (event.finalState) void refresh()
+	})
+	const activeMove = (await listBackupOperations(undefined, true)).find(
+		(operation) => operation.operation_type === 'repository_move',
+	)
+	if (activeMove) {
+		movingOperationId.value = activeMove.id
+		moving.value = true
+		movedBytes.value = activeMove.processed_bytes
+		moveTotalBytes.value = activeMove.total_bytes
+	}
+	await refresh()
+})
+
+onUnmounted(() => unlisten?.())
+</script>
+
+<template>
+	<SettingsSection
+		:title="formatMessage(messages.title)"
+		:description="formatMessage(messages.description)"
+	>
+		<SettingsRow>
+			<template #label>{{ formatMessage(messages.location) }}</template>
+			<template #description>
+				<span class="break-all">{{ status?.path ?? '...' }}</span>
+				<span class="mt-1 block">{{ formatMessage(messages.locationDescription) }}</span>
+			</template>
+			<template #control>
+				<Button type="outlined" :disabled="loading || moving" @click="changeLocation"
+					><FolderIcon />
+					{{
+						formatMessage(
+							moving && moveTotalBytes > 0
+								? messages.movingProgress
+								: moving
+									? messages.moving
+									: messages.change,
+							{
+								processed: formatBytes(movedBytes),
+								total: formatBytes(moveTotalBytes),
+							},
+						)
+					}}
+				</Button>
+			</template>
+		</SettingsRow>
+		<SettingsRow v-if="status">
+			<template #label>{{ formatMessage(messages.usage) }}</template>
+			<template #description>
+				{{
+					formatMessage(messages.usageDescription, {
+						stored: formatBytes(status.stored_size),
+						logical: formatBytes(status.logical_size),
+						count: status.snapshot_count,
+					})
+				}}
+			</template>
+		</SettingsRow>
+		<Admonition
+			v-if="status && !status.available"
+			type="critical"
+			:header="formatMessage(messages.unavailable)"
+		>
+			{{ status.error }}
+		</Admonition>
+	</SettingsSection>
+</template>

apps/app-frontend/src/components/ui/settings/FeatureFlagSettings.vue

@@ -71,6 +71,7 @@ const featureFlagLabels: Record<FeatureFlag, string> = {
 	advanced_filters_collapsed: '高级筛选默认折叠',
 	multiplayer_in_app: '多人联机',
 	auto_install_dependencies: '自动安装依赖',
+	force_anniversary_celebration: '强制显示周年庆庆祝（调试）',
 }
 
 const settings = ref(await getSettings())

apps/app-frontend/src/components/ui/settings/ResourceManagementSettings.vue

@@ -253,6 +253,15 @@ const messages = defineMessages({
 		defaultMessage:
 			'When CurseForge does not provide a download address, derive its CDN address and try downloading the file automatically. Disable this to use the manual download workflow.',
 	},
+	ignoreSslErrors: {
+		id: 'app.settings.resources.ignore-ssl-errors',
+		defaultMessage: 'Ignore SSL certificate errors',
+	},
+	ignoreSslErrorsDescription: {
+		id: 'app.settings.resources.ignore-ssl-errors-description',
+		defaultMessage:
+			'Skip TLS certificate validation for launcher network requests. Only enable this if you trust your network and understand the security risk.',
+	},
 	mojangAuthService: {
 		id: 'app.settings.resources.mojang-auth-service',
 		defaultMessage: 'Mojang authentication service',
@@ -923,6 +932,15 @@ function validateMinecraftDirectory(value) {
 					/>
 				</template>
 			</SettingsRow>
+			<SettingsRow>
+				<template #label>{{ formatMessage(messages.ignoreSslErrors) }}</template>
+				<template #description>
+					{{ formatMessage(messages.ignoreSslErrorsDescription) }}
+				</template>
+				<template #control>
+					<Toggle id="ignore-ssl-errors" v-model="settings.ignore_ssl_errors" />
+				</template>
+			</SettingsRow>
 		</SettingsSection>
 
 		<SettingsSection v-if="props.scope === 'content-downloads'">

apps/app-frontend/src/components/ui/settings/StorageBackupSettings.vue

@@ -1,4 +1,5 @@
 <script setup lang="ts">
+import BackupRepositorySettings from './BackupRepositorySettings.vue'
 import ResourceManagementSettings from './ResourceManagementSettings.vue'
 import StorageSettings from './StorageSettings.vue'
 </script>
@@ -6,6 +7,7 @@ import StorageSettings from './StorageSettings.vue'
 <template>
 	<div class="flex flex-col gap-6">
 		<ResourceManagementSettings scope="storage-backups" />
+		<BackupRepositorySettings />
 		<StorageSettings />
 	</div>
 </template>

apps/app-frontend/src/components/ui/settings/instances/SyncSourceModal.vue

@@ -0,0 +1,181 @@
+<script setup lang="ts">
+import { RefreshCwIcon, SearchIcon, SpinnerIcon, XIcon } from '@modrinth/assets'
+import {
+	Avatar,
+	Button,
+	CheckCircleButton,
+	commonMessages,
+	defineMessages,
+	NewModal,
+	StyledInput,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, ref, useTemplateRef } from 'vue'
+
+import { getInstanceIconUrl } from '@/helpers/instance'
+
+const props = defineProps<{
+	title: string
+	description: string
+	sources: {
+		id: string
+		name: string
+		icon_path?: string | null
+		eligible: boolean
+	}[]
+	loading?: boolean
+	pending?: boolean
+	error?: boolean
+}>()
+
+const emit = defineEmits<{
+	confirm: []
+	close: []
+	retry: []
+}>()
+
+const selectedInstanceId = defineModel<string>({ required: true })
+const modal = useTemplateRef<InstanceType<typeof NewModal>>('modal')
+const search = ref('')
+const { formatMessage } = useVIntl()
+
+const messages = defineMessages({
+	ineligible: {
+		id: 'app.settings.synced-options.choose-sync-source.ineligible',
+		defaultMessage: 'You cannot choose this instance as a sync source',
+	},
+	search: {
+		id: 'app.settings.synced-options.choose-sync-source.search-placeholder',
+		defaultMessage: 'Search instance',
+	},
+	empty: {
+		id: 'app.settings.synced-options.choose-sync-source.no-instances-found',
+		defaultMessage: 'No instances found',
+	},
+	sync: {
+		id: 'app.settings.synced-options.choose-sync-source.sync',
+		defaultMessage: 'Sync',
+	},
+	loadError: {
+		id: 'app.settings.synced-options.choose-sync-source.load-error',
+		defaultMessage: 'Could not load sync sources. Please try again.',
+	},
+	retry: {
+		id: 'app.settings.synced-options.choose-sync-source.retry',
+		defaultMessage: 'Try again',
+	},
+})
+
+const filteredSources = computed(() => {
+	const query = search.value.trim().toLocaleLowerCase()
+	return props.sources.filter((source) => source.name.toLocaleLowerCase().includes(query))
+})
+const canConfirm = computed(
+	() =>
+		!props.loading &&
+		!props.pending &&
+		!props.error &&
+		props.sources.some((source) => source.id === selectedInstanceId.value && source.eligible),
+)
+
+function show() {
+	search.value = ''
+	modal.value?.show()
+}
+
+function hide() {
+	return modal.value?.hide()
+}
+
+defineExpose({ show, hide })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="title"
+		no-padding
+		actions-divider
+		max-width="560px"
+		width="560px"
+		:disable-close="pending"
+		:on-after-hide="() => emit('close')"
+	>
+		<p
+			class="m-0 border-0 border-b border-solid border-surface-5 p-6 text-[var(--color-text-default)]"
+		>
+			{{ description }}
+		</p>
+
+		<div class="flex h-[400px] flex-col gap-3 overflow-y-auto bg-surface-2 px-6 py-4">
+			<StyledInput
+				v-model="search"
+				:icon="SearchIcon"
+				type="search"
+				autocomplete="off"
+				:placeholder="formatMessage(messages.search)"
+				:aria-label="formatMessage(messages.search)"
+				class="shrink-0"
+			/>
+
+			<div v-if="loading" class="flex flex-1 items-center justify-center" aria-busy="true">
+				<SpinnerIcon class="size-5 animate-spin text-[var(--color-text-tertiary)]" />
+			</div>
+			<div v-else-if="error" class="flex flex-1 flex-col items-center justify-center gap-3">
+				<p role="alert" class="m-0 text-center text-[var(--color-text-default)]">
+					{{ formatMessage(messages.loadError) }}
+				</p>
+				<Button @click="emit('retry')">{{ formatMessage(messages.retry) }}</Button>
+			</div>
+			<div
+				v-else-if="filteredSources.length === 0"
+				class="flex flex-1 items-center justify-center text-[var(--color-text-tertiary)]"
+			>
+				{{ formatMessage(messages.empty) }}
+			</div>
+			<div v-else role="radiogroup" :aria-label="title" class="flex flex-col gap-1">
+				<div
+					v-for="source in filteredSources"
+					:key="source.id"
+					v-tooltip="!source.eligible ? formatMessage(messages.ineligible) : undefined"
+				>
+					<CheckCircleButton
+						:checked="selectedInstanceId === source.id"
+						:disabled="pending || !source.eligible"
+						class="min-h-10"
+						@click="selectedInstanceId = source.id"
+					>
+						<span class="size-5 shrink-0 overflow-hidden rounded-[6px]">
+							<Avatar
+								:src="getInstanceIconUrl(source.icon_path)"
+								:alt="source.name"
+								:tint-by="source.id"
+								size="1.25rem"
+								no-shadow
+							/>
+						</span>
+						<span class="min-w-0 flex-1 truncate">{{ source.name }}</span>
+					</CheckCircleButton>
+				</div>
+			</div>
+		</div>
+		<template #actions>
+			<div class="flex justify-end gap-2 p-2">
+				<Button type="outlined" :disabled="pending" @click="hide">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button
+					type="colored"
+					color="brand"
+					:disabled="!canConfirm"
+					:loading="pending"
+					@click="canConfirm && emit('confirm')"
+				>
+					<RefreshCwIcon :class="{ 'animate-spin': pending }" aria-hidden="true" />
+					{{ formatMessage(messages.sync) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/SyncedPacksModal.vue

@@ -0,0 +1,81 @@
+<script setup lang="ts">
+import { Button, defineMessages, NewModal, useVIntl } from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, ref } from 'vue'
+
+import {
+	remove_synced_pack,
+	set_synced_pack_enabled,
+	syncedPackKeys,
+	syncedPackQueryOptions,
+	type SyncedPackType,
+} from '@/helpers/synced-packs'
+
+const modal = ref<InstanceType<typeof NewModal>>()
+const type = ref<SyncedPackType>('resourcepack')
+const queryClient = useQueryClient()
+const { formatMessage } = useVIntl()
+const messages = defineMessages({
+	resourcePacks: {
+		id: 'app.settings.synced-packs.resource-packs',
+		defaultMessage: 'Resource packs',
+	},
+	dataPacks: { id: 'app.settings.synced-packs.data-packs', defaultMessage: 'Data packs' },
+	enable: { id: 'app.settings.synced-packs.enable', defaultMessage: 'Enable' },
+	disable: { id: 'app.settings.synced-packs.disable', defaultMessage: 'Disable' },
+	remove: { id: 'app.settings.synced-packs.remove', defaultMessage: 'Remove' },
+	empty: { id: 'app.settings.synced-packs.empty', defaultMessage: 'No synced packs' },
+})
+const query = useQuery(computed(() => syncedPackQueryOptions(type.value)))
+const packs = computed(() => query.value.data.value ?? [])
+const mutation = useMutation({
+	mutationFn: async (request: { id: string; enabled?: boolean; remove?: boolean }) => {
+		if (request.remove) await remove_synced_pack(request.id)
+		else await set_synced_pack_enabled(request.id, request.enabled ?? true)
+	},
+	onSuccess: () => queryClient.invalidateQueries({ queryKey: syncedPackKeys.all }),
+})
+
+async function show(nextType: SyncedPackType) {
+	type.value = nextType
+	modal.value?.show()
+	await queryClient.invalidateQueries({ queryKey: syncedPackKeys.list(nextType) })
+}
+
+function hide() {
+	modal.value?.hide()
+}
+
+defineExpose({ show, hide })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="formatMessage(type === 'resourcepack' ? messages.resourcePacks : messages.dataPacks)"
+		max-width="42rem"
+	>
+		<div v-if="packs.length" class="flex flex-col gap-2">
+			<div
+				v-for="pack in packs"
+				:key="pack.id"
+				class="flex items-center gap-3 border-b border-solid border-surface-4 py-2"
+			>
+				<span class="min-w-0 flex-1 truncate">{{ pack.file_name }}</span>
+				<Button
+					:disabled="mutation.isPending.value"
+					@click="mutation.mutate({ id: pack.id, enabled: !pack.enabled })"
+					>{{ formatMessage(pack.enabled ? messages.disable : messages.enable) }}
+				</Button>
+				<Button
+					type="colored"
+					color="red"
+					:disabled="mutation.isPending.value"
+					@click="mutation.mutate({ id: pack.id, remove: true })"
+					>{{ formatMessage(messages.remove) }}
+				</Button>
+			</div>
+		</div>
+		<p v-else class="m-0 text-[var(--color-text-tertiary)]">{{ formatMessage(messages.empty) }}</p>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/command-history-modal.vue

@@ -0,0 +1,93 @@
+<script setup lang="ts">
+import { SaveIcon, XIcon } from '@modrinth/assets'
+import {
+	Button,
+	commonMessages,
+	defineMessages,
+	injectNotificationManager,
+	NewModal,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { nextTick, ref } from 'vue'
+
+import StudioEditor from '@/components/instance/studio/StudioEditor.vue'
+import { set_command_history } from '@/helpers/instance'
+import { commandHistoryQueryOptions, syncedOptionsKeys } from '@/helpers/synced-options'
+
+const { formatMessage } = useVIntl()
+const { handleError } = injectNotificationManager()
+const queryClient = useQueryClient()
+const modal = ref<InstanceType<typeof NewModal> | null>(null)
+const commandHistory = ref('')
+const historyQuery = useQuery({ ...commandHistoryQueryOptions(), enabled: false })
+const saveMutation = useMutation({
+	mutationFn: set_command_history,
+	onSuccess: (history) => {
+		queryClient.setQueryData(syncedOptionsKeys.commandHistory, history)
+	},
+	onError: handleError,
+})
+
+const messages = defineMessages({
+	commandHistoryEditorTitle: {
+		id: 'app.settings.synced-options.command-history.editor-title',
+		defaultMessage: 'Edit command history',
+	},
+})
+
+async function show() {
+	const result = await historyQuery.refetch()
+	if (result.isError) {
+		handleError(result.error)
+		return
+	}
+	if (!result.isSuccess) return
+	commandHistory.value = result.data
+	modal.value?.show()
+}
+
+async function saveCommandHistory() {
+	if (saveMutation.isPending.value) return
+	try {
+		await saveMutation.mutateAsync(commandHistory.value)
+		await nextTick()
+		modal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+defineExpose({ show })
+</script>
+
+<template>
+	<NewModal
+		ref="modal"
+		:header="formatMessage(messages.commandHistoryEditorTitle)"
+		:disable-close="saveMutation.isPending.value"
+		no-padding
+		actions-divider
+		max-width="700px"
+		width="700px"
+	>
+		<StudioEditor
+			v-model:content="commandHistory"
+			file-path="command_history.txt"
+			language="plaintext"
+			class="h-[420px] text-sm"
+		/>
+		<template #actions>
+			<div class="flex justify-end gap-2">
+				<Button type="outlined" @click="modal?.hide()">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button type="colored" :loading="saveMutation.isPending.value" @click="saveCommandHistory">
+					<SaveIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.saveButton) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/boolean-control.vue

@@ -0,0 +1,62 @@
+<script setup lang="ts">
+import { Button } from '@modrinth/ui'
+
+defineProps<{
+	modelValue?: boolean
+	disabled?: boolean
+	label: string
+	onLabel: string
+	offLabel: string
+	placeholder?: string
+}>()
+
+const emit = defineEmits<{
+	'update:model-value': [value: boolean]
+}>()
+</script>
+
+<template>
+	<div
+		v-tooltip="modelValue === undefined ? placeholder : undefined"
+		role="group"
+		:aria-label="label"
+		class="inline-flex h-9 items-center gap-0.5 rounded-xl border border-solid border-surface-5 p-px shadow-[0_1px_3px_rgba(0,0,0,0.15)]"
+		:class="{ 'opacity-50': disabled }"
+	>
+		<Button
+			type="quiet"
+			size="sm"
+			:interaction="modelValue === true ? 'none' : 'surface'"
+			class="boolean-control-on !rounded-[10px] !px-3 !font-medium disabled:!opacity-100"
+			:class="modelValue === true ? '!text-green' : '!text-[var(--color-text-primary)]'"
+			:aria-pressed="modelValue === true"
+			:disabled="disabled"
+			@click="emit('update:model-value', true)"
+		>
+			{{ onLabel }}
+		</Button>
+		<Button
+			type="quiet"
+			size="sm"
+			:interaction="modelValue === false ? 'none' : 'surface'"
+			class="boolean-control-off !rounded-[10px] !px-3 !font-medium !text-[var(--color-text-primary)] disabled:!opacity-100"
+			:aria-pressed="modelValue === false"
+			:disabled="disabled"
+			@click="emit('update:model-value', false)"
+		>
+			{{ offLabel }}
+		</Button>
+	</div>
+</template>
+
+<style scoped>
+.boolean-control-on[aria-pressed='true'] {
+	background-color: color-mix(in srgb, var(--color-green) 30%, var(--surface-3));
+	box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--color-green) 60%, transparent);
+}
+
+.boolean-control-off[aria-pressed='true'] {
+	background-color: var(--surface-4);
+	box-shadow: inset 0 0 0 1px var(--surface-5);
+}
+</style>

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/editors.ts

@@ -0,0 +1,163 @@
+import { toRaw } from 'vue'
+
+import type {
+	EditableGameSetting,
+	GameOptionCanonicalValue,
+	GameSettingChange,
+	GameSettingsEditorState,
+} from '@/helpers/game-options'
+
+function clonePlainValue(value: unknown): unknown {
+	if (Array.isArray(value)) {
+		return toRaw(value).map(clonePlainValue)
+	}
+	if (value !== null && typeof value === 'object') {
+		return Object.fromEntries(
+			Object.entries(toRaw(value)).map(([key, nestedValue]) => [key, clonePlainValue(nestedValue)]),
+		)
+	}
+	return value
+}
+
+export function cloneGameSettingsState(state: GameSettingsEditorState): GameSettingsEditorState {
+	return clonePlainValue(state) as GameSettingsEditorState
+}
+
+export function canonicalValuesEqual(
+	left: GameOptionCanonicalValue | null | undefined,
+	right: GameOptionCanonicalValue | null | undefined,
+): boolean {
+	return JSON.stringify(left ?? null) === JSON.stringify(right ?? null)
+}
+
+export function gameSettingChanges(
+	base: GameSettingsEditorState | null,
+	draft: GameSettingsEditorState | null,
+	forcedValueOptionIds: ReadonlySet<string> = new Set(),
+): GameSettingChange[] {
+	if (!base || !draft) return []
+
+	const baseSettings = new Map(base.settings.map((setting) => [setting.option_id, setting]))
+	return draft.settings.flatMap((setting) => {
+		const previous = baseSettings.get(setting.option_id)
+		if (!previous) return []
+
+		const syncChanged = previous.sync_enabled !== setting.sync_enabled
+		const valueChanged = !canonicalValuesEqual(previous.canonical_value, setting.canonical_value)
+		const promoteLocalValue =
+			forcedValueOptionIds.has(setting.option_id) &&
+			previous.value_state !== 'canonical' &&
+			setting.canonical_value !== null &&
+			setting.canonical_value !== undefined
+		if (!syncChanged && !valueChanged && !promoteLocalValue) return []
+
+		return [
+			{
+				option_id: setting.option_id,
+				base_option_revision: previous.option_revision,
+				...(syncChanged ? { sync_enabled: setting.sync_enabled } : {}),
+				...(valueChanged || promoteLocalValue
+					? { canonical_value: setting.canonical_value ?? null }
+					: {}),
+			},
+		]
+	})
+}
+
+export function gameSettingNumberScale(setting: EditableGameSetting): number {
+	if (setting.editor.unit !== 'percent') return 1
+	return setting.option_id === 'sensitivity' ? 200 : 100
+}
+
+export function canonicalValueText(setting: EditableGameSetting): string {
+	const value = setting.canonical_value
+	if (!value) return ''
+
+	switch (value.type) {
+		case 'bool':
+			return value.value ? 'true' : 'false'
+		case 'integer':
+		case 'decimal':
+			return setting.editor.unit === 'percent'
+				? String(Number((Number(value.value) * gameSettingNumberScale(setting)).toFixed(8)))
+				: String(value.value)
+		case 'string_list':
+			return value.value.join(', ')
+		default:
+			return value.value
+	}
+}
+
+export function canonicalBooleanValue(setting: EditableGameSetting): boolean | undefined {
+	return setting.canonical_value?.type === 'bool' ? setting.canonical_value.value : undefined
+}
+
+export function isKeybindSetting(setting: EditableGameSetting): boolean {
+	return (
+		setting.editor.type === 'key_binding' ||
+		(setting.editor.type === 'external_raw' && !!setting.raw_key?.startsWith('key_'))
+	)
+}
+
+export function canonicalValueFromInput(
+	setting: EditableGameSetting,
+	value: string | number | boolean | undefined,
+): GameOptionCanonicalValue | null {
+	if (value === undefined || value === '') return null
+
+	switch (setting.editor.type) {
+		case 'bool':
+			return { type: 'bool', value: Boolean(value) }
+		case 'integer': {
+			const parsed = Number(value)
+			return Number.isSafeInteger(parsed) ? { type: 'integer', value: parsed } : null
+		}
+		case 'decimal': {
+			const parsed = Number(value)
+			if (!Number.isFinite(parsed)) return null
+			return {
+				type: 'decimal',
+				value:
+					setting.editor.unit === 'percent'
+						? String(Number((parsed / gameSettingNumberScale(setting)).toFixed(8)))
+						: String(value),
+			}
+		}
+		case 'enum':
+			return { type: 'enum', value: String(value) }
+		case 'string_list':
+			return {
+				type: 'string_list',
+				value: String(value)
+					.split(',')
+					.map((item) => item.trim())
+					.filter(Boolean),
+			}
+		case 'key_binding':
+			return { type: 'key_binding', value: String(value) }
+		case 'external_raw':
+			return { type: 'external_raw', value: String(value) }
+		default:
+			return { type: 'text', value: String(value) }
+	}
+}
+
+export function settingSearchText(
+	setting: EditableGameSetting,
+	label: string,
+	description: string,
+): string {
+	return [label, description, setting.option_id, setting.raw_key]
+		.filter(Boolean)
+		.join(' ')
+		.toLocaleLowerCase()
+}
+
+export function settingCanBeEnabled(setting: EditableGameSetting): boolean {
+	return (
+		!setting.controlled &&
+		!setting.validation_error &&
+		!['mixed', 'unset', 'invalid'].includes(setting.value_state) &&
+		(setting.compatibility.total_participating === 0 || setting.compatibility.will_receive > 0)
+	)
+}

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/index.vue

@@ -0,0 +1,483 @@
+<script setup lang="ts">
+import {
+	EyeIcon,
+	LanguagesIcon,
+	LinkIcon,
+	MessageIcon,
+	MonitorIcon,
+	RefreshCwIcon,
+	SaveIcon,
+	SearchIcon,
+	SettingsIcon,
+	ShirtIcon,
+	TagCategoryAudioIcon,
+	TagCategoryGamepad2Icon,
+	UnlinkIcon,
+	WrenchIcon,
+	XIcon,
+} from '@modrinth/assets'
+import {
+	Button,
+	commonMessages,
+	defineMessages,
+	FloatingActionBar,
+	StyledInput,
+	TabbedModal,
+	type TabbedModalTab,
+	useVIntl,
+} from '@modrinth/ui'
+import type { Component } from 'vue'
+import { computed, inject, ref, watch } from 'vue'
+import { type RouteLocationRaw, useRouter } from 'vue-router'
+
+import type { EditableGameSetting, GameSettingCategory } from '@/helpers/game-options'
+import { injectInstanceSettings } from '@/pages/instance/components/settings-modal/instance-settings-context'
+import { appSettingsModalContextKey } from '@/providers/app-settings-modal'
+
+import {
+	canonicalValueText,
+	isKeybindSetting,
+	settingCanBeEnabled,
+	settingSearchText,
+} from './editors'
+import { minecraftKeybindConflictKey } from './keybinds'
+import {
+	formatGameSettingDescription,
+	formatGameSettingLabel,
+	gameSettingCategoryMessage,
+} from './messages'
+import GameSettingRow from './row.vue'
+import { useGameSettingsEditor } from './use-editor'
+import { useGameSettingLabels } from './use-labels'
+
+const props = defineProps<{
+	instanceId?: string
+}>()
+
+const emit = defineEmits<{
+	saved: []
+}>()
+
+const { formatMessage } = useVIntl()
+const router = useRouter()
+const appSettingsModal = inject(appSettingsModalContextKey, null)
+const instanceSettings = injectInstanceSettings(null)
+
+const messages = defineMessages({
+	title: {
+		id: 'app.settings.synced-options.game-settings.title',
+		defaultMessage: 'Game settings',
+	},
+	syncTitle: {
+		id: 'app.settings.synced-options.game-settings.sync-title',
+		defaultMessage: 'Sync game settings',
+	},
+	syncedOptionsDescription: {
+		id: 'app.settings.synced-options.game-settings.sync-description',
+		defaultMessage:
+			'Synced options are applied to every instance and override the values included with a modpack.',
+	},
+	search: {
+		id: 'app.settings.synced-options.game-settings.search',
+		defaultMessage: 'Search settings...',
+	},
+	enableAll: {
+		id: 'app.settings.synced-options.game-settings.enable-all',
+		defaultMessage: 'Sync all',
+	},
+	disableAll: {
+		id: 'app.settings.synced-options.game-settings.disable-all',
+		defaultMessage: 'Unsync all',
+	},
+	customEmpty: {
+		id: 'app.settings.synced-options.game-settings.custom-empty',
+		defaultMessage:
+			'Settings added by mods will appear here after Modrinth finds them in one of your instances.',
+	},
+	empty: {
+		id: 'app.settings.synced-options.game-settings.empty',
+		defaultMessage: 'No settings match your search or filter.',
+	},
+	loading: {
+		id: 'app.settings.synced-options.game-settings.loading',
+		defaultMessage: 'Loading settings...',
+	},
+	loadFailed: {
+		id: 'app.settings.synced-options.game-settings.load-failed',
+		defaultMessage: 'We couldn’t load your game settings.',
+	},
+	retry: {
+		id: 'app.settings.synced-options.game-settings.retry',
+		defaultMessage: 'Retry',
+	},
+	saveSettings: {
+		id: 'app.settings.synced-options.game-settings.save',
+		defaultMessage: 'Save settings',
+	},
+	unsavedChanges: {
+		id: 'app.settings.synced-options.game-settings.unsaved-changes',
+		defaultMessage: 'You have unsaved changes.',
+	},
+})
+
+const modal = ref<InstanceType<typeof TabbedModal> | null>(null)
+const activeCategoryId = ref('')
+const search = ref('')
+const opened = ref(false)
+let allowClose = false
+
+const {
+	draftState,
+	isLocalEditor,
+	isDirty,
+	hasBlockingDraft,
+	loading,
+	loadError,
+	saving,
+	load,
+	reset: resetEditor,
+	cancelChanges,
+	setSyncEnabled,
+	setCanonicalValue,
+	save,
+	saveAndWait,
+} = useGameSettingsEditor(
+	() => props.instanceId,
+	() => emit('saved'),
+)
+
+const categoryIcons: Record<string, Component> = {
+	skin_customization: ShirtIcon,
+	video: MonitorIcon,
+	video_settings: MonitorIcon,
+	language: LanguagesIcon,
+	music_and_sound: TagCategoryAudioIcon,
+	controls: TagCategoryGamepad2Icon,
+	chat: MessageIcon,
+	chat_settings: MessageIcon,
+	accessibility: EyeIcon,
+	custom: WrenchIcon,
+	custom_settings: WrenchIcon,
+}
+
+const localeLabels = useGameSettingLabels(
+	opened,
+	() => props.instanceId,
+	() => draftState.value?.settings ?? [],
+)
+
+function settingLabel(setting: EditableGameSetting) {
+	if (setting.kind === 'external') {
+		return (
+			localeLabels.value[setting.option_id]?.label ?? formatGameSettingLabel(formatMessage, setting)
+		)
+	}
+	return formatGameSettingLabel(formatMessage, setting)
+}
+
+const categories = computed<GameSettingCategory[]>(() => {
+	if (!draftState.value) return []
+
+	const settings = draftState.value.settings
+	const visible = draftState.value.categories.filter(
+		(category) =>
+			category.is_custom || settings.some((setting) => setting.category_id === category.id),
+	)
+	if (!visible.some((category) => category.is_custom || category.id === 'custom_settings')) {
+		visible.push({
+			id: 'custom_settings',
+			is_custom: true,
+		})
+	}
+	return visible
+})
+
+const categoryTabs = computed<TabbedModalTab[]>(() =>
+	categories.value.map((category) => ({
+		name: gameSettingCategoryMessage(category),
+		icon: categoryIcon(category),
+	})),
+)
+
+const activeCategory = computed(() =>
+	categories.value.find((category) => category.id === activeCategoryId.value),
+)
+
+const categorySettings = computed(() => {
+	if (!draftState.value) return []
+
+	const query = search.value.trim().toLocaleLowerCase()
+	return draftState.value.settings.filter((setting) => {
+		if (!query && setting.category_id !== activeCategoryId.value) return false
+		if (
+			query &&
+			!settingSearchText(
+				setting,
+				settingLabel(setting),
+				setting.kind === 'external'
+					? (localeLabels.value[setting.option_id]?.source?.project?.title ??
+							localeLabels.value[setting.option_id]?.source?.file_name ??
+							'')
+					: formatGameSettingDescription(formatMessage, setting),
+			).includes(query)
+		)
+			return false
+		return true
+	})
+})
+
+const keybindConflicts = computed(() => {
+	if (!draftState.value) return new Map<string, string[]>()
+
+	const bindings = new Map<string, EditableGameSetting[]>()
+	for (const setting of draftState.value.settings) {
+		if (!isKeybindSetting(setting)) continue
+		const key = minecraftKeybindConflictKey(setting.option_id, canonicalValueText(setting))
+		if (!key) continue
+		bindings.set(key, [...(bindings.get(key) ?? []), setting])
+	}
+
+	const conflicts = new Map<string, string[]>()
+	for (const settings of bindings.values()) {
+		if (settings.length < 2) continue
+		for (const setting of settings) {
+			conflicts.set(
+				setting.option_id,
+				settings
+					.filter((candidate) => candidate.option_id !== setting.option_id)
+					.map((candidate) => settingLabel(candidate)),
+			)
+		}
+	}
+	return conflicts
+})
+
+const enableCandidates = computed(() =>
+	categorySettings.value.filter((setting) => !setting.sync_enabled && settingCanBeEnabled(setting)),
+)
+const disableCandidates = computed(() =>
+	categorySettings.value.filter((setting) => setting.sync_enabled && !setting.controlled),
+)
+const toggleableCategorySettings = computed(() =>
+	categorySettings.value.filter((setting) => !setting.controlled),
+)
+const allCategorySettingsSynced = computed(
+	() =>
+		toggleableCategorySettings.value.length > 0 &&
+		toggleableCategorySettings.value.every((setting) => setting.sync_enabled),
+)
+const modalTitle = computed(() =>
+	formatMessage(isLocalEditor.value ? messages.title : messages.syncTitle),
+)
+
+function categoryIcon(category: GameSettingCategory): Component {
+	return categoryIcons[category.id] ?? SettingsIcon
+}
+
+function changeCategory(_fromIndex: number, toIndex: number): boolean {
+	const category = categories.value[toIndex]
+	if (!category) return false
+	activeCategoryId.value = category.id
+	search.value = ''
+	return true
+}
+
+watch(
+	categories,
+	() => {
+		if (!categories.value.some((category) => category.id === activeCategoryId.value)) {
+			activeCategoryId.value = categories.value[0]?.id ?? 'custom_settings'
+		}
+		const index = categories.value.findIndex((category) => category.id === activeCategoryId.value)
+		if (index >= 0) modal.value?.setTab(index)
+	},
+	{ flush: 'sync' },
+)
+
+function show() {
+	opened.value = true
+	allowClose = false
+	search.value = ''
+	void load()
+	modal.value?.show()
+}
+
+function hide() {
+	modal.value?.hide()
+}
+
+function reset() {
+	opened.value = false
+	resetEditor()
+	allowClose = false
+}
+
+function beforeHide(): boolean {
+	if (allowClose || !isDirty.value) return true
+	void saveBeforeClose()
+	return false
+}
+
+async function saveBeforeClose() {
+	const saved = await saveAndWait()
+	if (!saved) return
+	allowClose = true
+	modal.value?.hide()
+}
+
+async function openSource(location: RouteLocationRaw) {
+	if (isDirty.value || saving.value) return
+	if (appSettingsModal && !appSettingsModal.close()) return
+	allowClose = true
+	modal.value?.hide()
+	if (instanceSettings?.closeModal) {
+		instanceSettings.closeModal(() => void router.push(location))
+	} else {
+		await router.push(location)
+	}
+}
+
+function toggleVisibleSync() {
+	const enabled = !allCategorySettingsSynced.value
+	const candidates = enabled ? enableCandidates.value : disableCandidates.value
+	setSyncEnabled(
+		candidates.map((setting) => setting.option_id),
+		enabled,
+	)
+}
+
+defineExpose({ show, hide })
+</script>
+
+<template>
+	<TabbedModal
+		ref="modal"
+		:tabs="categoryTabs"
+		:header="modalTitle"
+		:before-hide="beforeHide"
+		:before-tab-change="changeCategory"
+		:hide-tab-selection="search.trim().length > 0"
+		:on-after-hide="reset"
+		:floating-action-bar-shown="isDirty"
+		max-width="min(1080px, calc(95vw - 2rem))"
+		width="min(1080px, calc(95vw - 2rem))"
+	>
+		<template #sidebar-header>
+			<div class="pb-4">
+				<StyledInput
+					v-model="search"
+					:icon="SearchIcon"
+					type="search"
+					autocomplete="off"
+					:placeholder="formatMessage(messages.search)"
+					:aria-label="formatMessage(messages.search)"
+					wrapper-class="w-full shrink-0"
+				/>
+			</div>
+		</template>
+
+		<template #content>
+			<div class="flex min-h-full min-w-0 flex-col">
+				<div
+					v-if="!isLocalEditor && (loading || loadError || categorySettings.length > 0)"
+					class="mb-4 flex shrink-0 flex-wrap items-start justify-between gap-4 border-0 border-b border-solid border-surface-4 pb-4"
+				>
+					<p class="m-0 min-w-60 flex-1 text-[var(--color-text-default)]">
+						{{ formatMessage(messages.syncedOptionsDescription) }}
+					</p>
+					<div class="ml-auto flex w-48 justify-end">
+						<Button
+							size="lg"
+							:disabled="
+								allCategorySettingsSynced
+									? disableCandidates.length === 0
+									: enableCandidates.length === 0
+							"
+							@click="toggleVisibleSync"
+						>
+							<LinkIcon v-if="allCategorySettingsSynced" aria-hidden="true" />
+							<UnlinkIcon v-else aria-hidden="true" />
+							{{
+								formatMessage(allCategorySettingsSynced ? messages.disableAll : messages.enableAll)
+							}}
+						</Button>
+					</div>
+				</div>
+
+				<div
+					v-if="loading"
+					role="status"
+					:aria-label="formatMessage(messages.loading)"
+					class="flex flex-1 flex-col gap-4"
+				>
+					<div
+						v-for="row in 5"
+						:key="row"
+						class="h-20 animate-pulse rounded-xl bg-surface-3"
+						aria-hidden="true"
+					/>
+				</div>
+				<div
+					v-else-if="loadError"
+					class="flex min-h-40 flex-1 flex-col items-center justify-center gap-3 text-[var(--color-text-tertiary)]"
+				>
+					<p class="m-0">{{ formatMessage(messages.loadFailed) }}</p>
+					<Button @click="load">
+						<RefreshCwIcon aria-hidden="true" />
+						{{ formatMessage(messages.retry) }}
+					</Button>
+				</div>
+				<div v-else class="min-h-0 flex-1">
+					<div
+						v-if="categorySettings.length === 0"
+						class="flex h-full min-h-40 items-center justify-center px-8 text-center text-[var(--color-text-tertiary)]"
+					>
+						{{
+							activeCategory?.is_custom && !search
+								? formatMessage(messages.customEmpty)
+								: formatMessage(messages.empty)
+						}}
+					</div>
+					<div v-else class="flex flex-col gap-4">
+						<GameSettingRow
+							v-for="setting in categorySettings"
+							:key="setting.option_id"
+							:setting="setting"
+							:locale-label="localeLabels[setting.option_id]"
+							:keybind-conflicts="keybindConflicts.get(setting.option_id)"
+							:show-sync-toggle="!isLocalEditor"
+							:source-navigation-disabled="isDirty || saving"
+							@open-source="openSource"
+							@update:sync-enabled="setSyncEnabled([setting.option_id], $event)"
+							@update:canonical-value="setCanonicalValue(setting.option_id, $event)"
+						/>
+					</div>
+				</div>
+			</div>
+		</template>
+
+		<template #floating-action-bar>
+			<FloatingActionBar v-if="isDirty" shown inline :aria-label="modalTitle">
+				<p class="m-0 text-sm font-semibold md:text-base">
+					{{ formatMessage(messages.unsavedChanges) }}
+				</p>
+				<div class="ml-auto flex gap-2">
+					<Button type="outlined" @click="cancelChanges">
+						<XIcon aria-hidden="true" />
+						{{ formatMessage(commonMessages.cancelButton) }}
+					</Button>
+					<Button
+						type="colored"
+						color="brand"
+						:disabled="!isDirty || loading || saving || hasBlockingDraft"
+						:loading="saving"
+						@click="save"
+					>
+						<SaveIcon aria-hidden="true" />
+						{{ formatMessage(messages.saveSettings) }}
+					</Button>
+				</div>
+			</FloatingActionBar>
+		</template>
+	</TabbedModal>
+</template>

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/keybind-input.vue

@@ -0,0 +1,235 @@
+<script setup lang="ts">
+import { TriangleAlertIcon } from '@modrinth/assets'
+import { Button, defineMessages, useVIntl } from '@modrinth/ui'
+import { computed, onBeforeUnmount, ref, useId, watch } from 'vue'
+
+import {
+	activateKeybindRecording,
+	deactivateKeybindRecording,
+	formatMinecraftKeybind,
+	minecraftKeyTokenFromKeyboardEvent,
+	minecraftMouseTokenFromButton,
+} from './keybinds'
+
+const props = withDefaults(
+	defineProps<{
+		modelValue: string
+		settingLabel: string
+		conflicts?: string[]
+		mixed?: boolean
+		disabled?: boolean
+	}>(),
+	{
+		conflicts: () => [],
+		mixed: false,
+		disabled: false,
+	},
+)
+
+const emit = defineEmits<{
+	'update:model-value': [value: string]
+}>()
+
+const { formatMessage, locale } = useVIntl()
+const statusId = useId()
+const conflictId = useId()
+const recording = ref(false)
+const statusMessage = ref('')
+const controlElement = ref<HTMLElement | null>(null)
+let suppressNextClick = false
+
+const messages = defineMessages({
+	listen: {
+		id: 'app.settings.game-options.keybind.listen',
+		defaultMessage: 'Press a key…',
+	},
+	choose: {
+		id: 'app.settings.game-options.keybind.choose',
+		defaultMessage: 'Choose a key',
+	},
+	mixed: {
+		id: 'app.settings.game-options.keybind.mixed',
+		defaultMessage: 'Different across instances',
+	},
+	change: {
+		id: 'app.settings.game-options.keybind.change',
+		defaultMessage: '{setting}: {binding}. Activate to change the binding.',
+	},
+	listeningStatus: {
+		id: 'app.settings.game-options.keybind.listening-status',
+		defaultMessage: 'Listening for a key or mouse button. Press Escape to clear this binding.',
+	},
+	recordingLabel: {
+		id: 'app.settings.game-options.keybind.recording-label',
+		defaultMessage:
+			'{setting}: listening for a key or mouse button. Press Escape to clear this binding.',
+	},
+	unsupportedStatus: {
+		id: 'app.settings.game-options.keybind.unsupported-status',
+		defaultMessage: 'That input cannot be used by Minecraft. Press another key.',
+	},
+	cancelledStatus: {
+		id: 'app.settings.game-options.keybind.cancelled-status',
+		defaultMessage: 'Key binding change cancelled.',
+	},
+	assignedStatus: {
+		id: 'app.settings.game-options.keybind.assigned-status',
+		defaultMessage: '{setting} is now bound to {binding}.',
+	},
+	conflict: {
+		id: 'app.settings.game-options.keybind.conflict-description',
+		defaultMessage: 'This is already used by {settings}.',
+	},
+})
+
+const isMac = /Mac|iPhone|iPad|iPod/.test(navigator.platform)
+const bindingLabel = computed(() => {
+	if (props.mixed) return formatMessage(messages.mixed)
+	if (!props.modelValue) return formatMessage(messages.choose)
+	return formatMinecraftKeybind(formatMessage, props.modelValue, isMac)
+})
+const visibleLabel = computed(() =>
+	recording.value ? formatMessage(messages.listen) : bindingLabel.value,
+)
+const conflictSettings = computed(() =>
+	new Intl.ListFormat(locale.value, { style: 'long', type: 'conjunction' }).format(
+		props.conflicts.map((setting) => `‘${setting}’`),
+	),
+)
+const conflictMessage = computed(() =>
+	props.conflicts.length
+		? formatMessage(messages.conflict, { settings: conflictSettings.value })
+		: '',
+)
+const accessibleLabel = computed(() =>
+	formatMessage(recording.value ? messages.recordingLabel : messages.change, {
+		setting: props.settingLabel,
+		binding: bindingLabel.value,
+	}),
+)
+
+function startRecording() {
+	if (props.disabled || recording.value) return
+	activateKeybindRecording(cancelRecording)
+	recording.value = true
+	statusMessage.value = formatMessage(messages.listeningStatus)
+	window.addEventListener('keydown', handleKeydown, true)
+	window.addEventListener('pointerdown', handlePointerDown, true)
+	window.addEventListener('blur', cancelRecording)
+}
+
+function stopRecording() {
+	recording.value = false
+	window.removeEventListener('keydown', handleKeydown, true)
+	window.removeEventListener('pointerdown', handlePointerDown, true)
+	window.removeEventListener('blur', cancelRecording)
+	deactivateKeybindRecording(cancelRecording)
+}
+
+function cancelRecording() {
+	if (!recording.value) return
+	stopRecording()
+	statusMessage.value = formatMessage(messages.cancelledStatus)
+}
+
+function assign(value: string) {
+	if (!recording.value) return
+	stopRecording()
+	emit('update:model-value', value)
+	statusMessage.value = formatMessage(messages.assignedStatus, {
+		setting: props.settingLabel,
+		binding: formatMinecraftKeybind(formatMessage, value, isMac),
+	})
+}
+
+function handleClick(event: MouseEvent) {
+	if (suppressNextClick) {
+		suppressNextClick = false
+		event.preventDefault()
+		event.stopPropagation()
+		return
+	}
+	startRecording()
+}
+
+function handleKeydown(event: KeyboardEvent) {
+	if (!recording.value) return
+
+	event.preventDefault()
+	event.stopPropagation()
+	if (event.code === 'Escape') {
+		assign('key.keyboard.unknown')
+		return
+	}
+	if (event.repeat) return
+
+	const token = event.isComposing ? null : minecraftKeyTokenFromKeyboardEvent(event)
+	if (!token) {
+		statusMessage.value = formatMessage(messages.unsupportedStatus)
+		return
+	}
+	assign(token)
+}
+
+function handlePointerDown(event: PointerEvent) {
+	if (!recording.value) return
+	if (event.pointerType !== 'mouse') return
+	const otherKeybindControl =
+		event.target instanceof Element
+			? event.target.closest<HTMLElement>('[data-game-keybind-control]')
+			: null
+	if (otherKeybindControl && otherKeybindControl !== controlElement.value) return
+
+	event.preventDefault()
+	event.stopPropagation()
+	const token = minecraftMouseTokenFromButton(event.button)
+	if (!token) {
+		statusMessage.value = formatMessage(messages.unsupportedStatus)
+		return
+	}
+	suppressNextClick = event.button === 0 && otherKeybindControl === controlElement.value
+	assign(token)
+}
+
+watch(
+	() => props.disabled,
+	(disabled) => {
+		if (disabled) cancelRecording()
+	},
+)
+onBeforeUnmount(cancelRecording)
+</script>
+
+<template>
+	<div class="flex w-full min-w-0 items-center gap-1.5">
+		<span
+			ref="controlElement"
+			v-tooltip="!recording && conflictMessage ? conflictMessage : undefined"
+			data-game-keybind-control
+			class="flex min-w-0 flex-1"
+		>
+			<Button
+				:type="recording || conflicts.length ? 'outlined' : 'base'"
+				:color="recording ? 'brand' : conflicts.length ? 'orange' : undefined"
+				size="md"
+				:disabled="disabled"
+				:aria-label="accessibleLabel"
+				:aria-describedby="recording ? statusId : conflicts.length ? conflictId : undefined"
+				class="w-full overflow-hidden"
+				@click="handleClick"
+				@contextmenu.prevent.stop
+				@auxclick.prevent.stop
+			>
+				<TriangleAlertIcon v-if="!recording && conflicts.length" aria-hidden="true" />
+				<span class="min-w-0 truncate">{{ visibleLabel }}</span>
+			</Button>
+		</span>
+
+		<span :id="statusId" class="visually-hidden" role="status" aria-live="polite">
+			{{ statusMessage }}
+		</span>
+		<span v-if="conflicts.length" :id="conflictId" class="visually-hidden">
+			{{ conflictMessage }}
+		</span>
+	</div>
+</template>

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/keybinds.ts

@@ -0,0 +1,426 @@
+import { defineMessages, type MessageDescriptor, type VIntlFormatters } from '@modrinth/ui'
+
+type FormatMessage = VIntlFormatters['formatMessage']
+
+type StopKeybindRecording = () => void
+let stopActiveKeybindRecording: StopKeybindRecording | null = null
+
+export function activateKeybindRecording(stop: StopKeybindRecording) {
+	if (stopActiveKeybindRecording === stop) return
+	const stopPrevious = stopActiveKeybindRecording
+	stopActiveKeybindRecording = stop
+	stopPrevious?.()
+}
+
+export function deactivateKeybindRecording(stop: StopKeybindRecording) {
+	if (stopActiveKeybindRecording === stop) {
+		stopActiveKeybindRecording = null
+	}
+}
+
+const keyMessages = defineMessages({
+	unbound: {
+		id: 'app.settings.game-options.keybind.key.unbound',
+		defaultMessage: 'Unbound',
+	},
+	escape: {
+		id: 'app.settings.game-options.keybind.key.escape',
+		defaultMessage: 'Escape',
+	},
+	backspace: {
+		id: 'app.settings.game-options.keybind.key.backspace',
+		defaultMessage: 'Backspace',
+	},
+	tab: {
+		id: 'app.settings.game-options.keybind.key.tab',
+		defaultMessage: 'Tab',
+	},
+	enter: {
+		id: 'app.settings.game-options.keybind.key.enter',
+		defaultMessage: 'Enter',
+	},
+	leftControl: {
+		id: 'app.settings.game-options.keybind.key.left-control',
+		defaultMessage: 'Left Ctrl',
+	},
+	rightControl: {
+		id: 'app.settings.game-options.keybind.key.right-control',
+		defaultMessage: 'Right Ctrl',
+	},
+	leftShift: {
+		id: 'app.settings.game-options.keybind.key.left-shift',
+		defaultMessage: 'Left Shift',
+	},
+	rightShift: {
+		id: 'app.settings.game-options.keybind.key.right-shift',
+		defaultMessage: 'Right Shift',
+	},
+	leftAlt: {
+		id: 'app.settings.game-options.keybind.key.left-alt',
+		defaultMessage: 'Left Alt',
+	},
+	rightAlt: {
+		id: 'app.settings.game-options.keybind.key.right-alt',
+		defaultMessage: 'Right Alt',
+	},
+	space: {
+		id: 'app.settings.game-options.keybind.key.space',
+		defaultMessage: 'Space',
+	},
+	capsLock: {
+		id: 'app.settings.game-options.keybind.key.caps-lock',
+		defaultMessage: 'Caps Lock',
+	},
+	numLock: {
+		id: 'app.settings.game-options.keybind.key.num-lock',
+		defaultMessage: 'Num Lock',
+	},
+	scrollLock: {
+		id: 'app.settings.game-options.keybind.key.scroll-lock',
+		defaultMessage: 'Scroll Lock',
+	},
+	printScreen: {
+		id: 'app.settings.game-options.keybind.key.print-screen',
+		defaultMessage: 'Print Screen',
+	},
+	pause: {
+		id: 'app.settings.game-options.keybind.key.pause',
+		defaultMessage: 'Pause',
+	},
+	home: {
+		id: 'app.settings.game-options.keybind.key.home',
+		defaultMessage: 'Home',
+	},
+	end: {
+		id: 'app.settings.game-options.keybind.key.end',
+		defaultMessage: 'End',
+	},
+	pageUp: {
+		id: 'app.settings.game-options.keybind.key.page-up',
+		defaultMessage: 'Page Up',
+	},
+	pageDown: {
+		id: 'app.settings.game-options.keybind.key.page-down',
+		defaultMessage: 'Page Down',
+	},
+	insert: {
+		id: 'app.settings.game-options.keybind.key.insert',
+		defaultMessage: 'Insert',
+	},
+	delete: {
+		id: 'app.settings.game-options.keybind.key.delete',
+		defaultMessage: 'Delete',
+	},
+	arrowUp: {
+		id: 'app.settings.game-options.keybind.key.arrow-up',
+		defaultMessage: 'Up Arrow',
+	},
+	arrowDown: {
+		id: 'app.settings.game-options.keybind.key.arrow-down',
+		defaultMessage: 'Down Arrow',
+	},
+	arrowLeft: {
+		id: 'app.settings.game-options.keybind.key.arrow-left',
+		defaultMessage: 'Left Arrow',
+	},
+	arrowRight: {
+		id: 'app.settings.game-options.keybind.key.arrow-right',
+		defaultMessage: 'Right Arrow',
+	},
+	leftSuper: {
+		id: 'app.settings.game-options.keybind.key.left-super',
+		defaultMessage: 'Left Super',
+	},
+	rightSuper: {
+		id: 'app.settings.game-options.keybind.key.right-super',
+		defaultMessage: 'Right Super',
+	},
+	leftCommand: {
+		id: 'app.settings.game-options.keybind.key.left-command',
+		defaultMessage: 'Left Command',
+	},
+	rightCommand: {
+		id: 'app.settings.game-options.keybind.key.right-command',
+		defaultMessage: 'Right Command',
+	},
+	menu: {
+		id: 'app.settings.game-options.keybind.key.menu',
+		defaultMessage: 'Menu',
+	},
+	keypadKey: {
+		id: 'app.settings.game-options.keybind.key.keypad-key',
+		defaultMessage: 'Numpad {key}',
+	},
+	leftMouse: {
+		id: 'app.settings.game-options.keybind.mouse.left',
+		defaultMessage: 'Left Mouse',
+	},
+	rightMouse: {
+		id: 'app.settings.game-options.keybind.mouse.right',
+		defaultMessage: 'Right Mouse',
+	},
+	middleMouse: {
+		id: 'app.settings.game-options.keybind.mouse.middle',
+		defaultMessage: 'Middle Mouse',
+	},
+	mouseButton: {
+		id: 'app.settings.game-options.keybind.mouse.button',
+		defaultMessage: 'Mouse {button}',
+	},
+	scancode: {
+		id: 'app.settings.game-options.keybind.scancode',
+		defaultMessage: 'Scancode {code}',
+	},
+	unknownKey: {
+		id: 'app.settings.game-options.keybind.key.unknown',
+		defaultMessage: 'Unknown key',
+	},
+	controlModifier: {
+		id: 'app.settings.game-options.keybind.modifier.control',
+		defaultMessage: 'Ctrl',
+	},
+	shiftModifier: {
+		id: 'app.settings.game-options.keybind.modifier.shift',
+		defaultMessage: 'Shift',
+	},
+	altModifier: {
+		id: 'app.settings.game-options.keybind.modifier.alt',
+		defaultMessage: 'Alt',
+	},
+	commandModifier: {
+		id: 'app.settings.game-options.keybind.modifier.command',
+		defaultMessage: 'Command',
+	},
+	superModifier: {
+		id: 'app.settings.game-options.keybind.modifier.super',
+		defaultMessage: 'Super',
+	},
+})
+
+const keyboardCodeTokens: Record<string, string> = {
+	Escape: 'escape',
+	Minus: 'minus',
+	Equal: 'equal',
+	Backspace: 'backspace',
+	Tab: 'tab',
+	BracketLeft: 'left.bracket',
+	BracketRight: 'right.bracket',
+	Enter: 'enter',
+	ControlLeft: 'left.control',
+	Semicolon: 'semicolon',
+	Quote: 'apostrophe',
+	Backquote: 'grave.accent',
+	ShiftLeft: 'left.shift',
+	Backslash: 'backslash',
+	Comma: 'comma',
+	Period: 'period',
+	Slash: 'slash',
+	ShiftRight: 'right.shift',
+	AltLeft: 'left.alt',
+	Space: 'space',
+	CapsLock: 'caps.lock',
+	NumLock: 'num.lock',
+	ScrollLock: 'scroll.lock',
+	NumpadSubtract: 'keypad.subtract',
+	NumpadAdd: 'keypad.add',
+	NumpadDecimal: 'keypad.decimal',
+	NumpadComma: 'keypad.decimal',
+	NumpadEqual: 'keypad.equal',
+	NumpadEnter: 'keypad.enter',
+	ControlRight: 'right.control',
+	NumpadDivide: 'keypad.divide',
+	NumpadMultiply: 'keypad.multiply',
+	PrintScreen: 'print.screen',
+	AltRight: 'right.alt',
+	Pause: 'pause',
+	Home: 'home',
+	ArrowUp: 'up',
+	PageUp: 'page.up',
+	ArrowLeft: 'left',
+	ArrowRight: 'right',
+	End: 'end',
+	ArrowDown: 'down',
+	PageDown: 'page.down',
+	Insert: 'insert',
+	Delete: 'delete',
+	MetaLeft: 'left.win',
+	MetaRight: 'right.win',
+	ContextMenu: 'menu',
+}
+
+const keyboardLabels: Record<string, MessageDescriptor | string> = {
+	escape: keyMessages.escape,
+	minus: '-',
+	equal: '=',
+	backspace: keyMessages.backspace,
+	tab: keyMessages.tab,
+	'left.bracket': '[',
+	'right.bracket': ']',
+	enter: keyMessages.enter,
+	'left.control': keyMessages.leftControl,
+	semicolon: ';',
+	apostrophe: "'",
+	'grave.accent': '`',
+	'left.shift': keyMessages.leftShift,
+	backslash: '\\',
+	comma: ',',
+	period: '.',
+	slash: '/',
+	'right.shift': keyMessages.rightShift,
+	'left.alt': keyMessages.leftAlt,
+	space: keyMessages.space,
+	'caps.lock': keyMessages.capsLock,
+	'num.lock': keyMessages.numLock,
+	'scroll.lock': keyMessages.scrollLock,
+	'keypad.subtract': '-',
+	'keypad.add': '+',
+	'keypad.decimal': '.',
+	'keypad.equal': '=',
+	'keypad.enter': keyMessages.enter,
+	'right.control': keyMessages.rightControl,
+	'keypad.divide': '/',
+	'keypad.multiply': '*',
+	'print.screen': keyMessages.printScreen,
+	'right.alt': keyMessages.rightAlt,
+	pause: keyMessages.pause,
+	home: keyMessages.home,
+	up: keyMessages.arrowUp,
+	'page.up': keyMessages.pageUp,
+	left: keyMessages.arrowLeft,
+	right: keyMessages.arrowRight,
+	end: keyMessages.end,
+	down: keyMessages.arrowDown,
+	'page.down': keyMessages.pageDown,
+	insert: keyMessages.insert,
+	delete: keyMessages.delete,
+	menu: keyMessages.menu,
+}
+
+function splitKeybind(value: string): [key: string, modifier?: string] {
+	const separator = value.indexOf(':')
+	return separator === -1 ? [value] : [value.slice(0, separator), value.slice(separator + 1)]
+}
+
+function keyboardIdentifierFromCode(code: string): string | null {
+	const letter = /^Key([A-Z])$/.exec(code)
+	if (letter) return letter[1].toLowerCase()
+
+	const digit = /^Digit([0-9])$/.exec(code)
+	if (digit) return digit[1]
+
+	const functionKey = /^F([1-9]|1[0-9]|2[0-5])$/.exec(code)
+	if (functionKey) return `f${functionKey[1]}`
+
+	const keypadDigit = /^Numpad([0-9])$/.exec(code)
+	if (keypadDigit) return `keypad.${keypadDigit[1]}`
+
+	return keyboardCodeTokens[code] ?? null
+}
+
+export function minecraftKeyTokenFromKeyboardEvent(event: KeyboardEvent): string | null {
+	const identifier = keyboardIdentifierFromCode(event.code)
+	return identifier ? `key.keyboard.${identifier}` : null
+}
+
+export function minecraftMouseTokenFromButton(button: number): string | null {
+	if (!Number.isInteger(button) || button < 0 || button > 15) return null
+	if (button === 0) return 'key.mouse.left'
+	if (button === 1) return 'key.mouse.middle'
+	if (button === 2) return 'key.mouse.right'
+	return `key.mouse.${button + 1}`
+}
+
+function formatKeyboardLabel(
+	formatMessage: FormatMessage,
+	identifier: string,
+	isMac: boolean,
+): string {
+	if (identifier === 'unknown') return formatMessage(keyMessages.unbound)
+	if (/^[a-z]$/.test(identifier)) return identifier.toUpperCase()
+	if (/^[0-9]$/.test(identifier)) return identifier
+	if (/^f([1-9]|1[0-9]|2[0-5])$/.test(identifier)) return identifier.toUpperCase()
+
+	const keypad = /^keypad\.(.+)$/.exec(identifier)
+	if (keypad) {
+		const label = keyboardLabels[identifier]
+		const key = typeof label === 'string' ? label : label ? formatMessage(label) : keypad[1]
+		return formatMessage(keyMessages.keypadKey, { key })
+	}
+
+	if (identifier === 'left.win') {
+		return formatMessage(isMac ? keyMessages.leftCommand : keyMessages.leftSuper)
+	}
+	if (identifier === 'right.win') {
+		return formatMessage(isMac ? keyMessages.rightCommand : keyMessages.rightSuper)
+	}
+
+	const label = keyboardLabels[identifier]
+	if (typeof label === 'string') return label
+	if (label) return formatMessage(label)
+	return identifier
+		.split('.')
+		.map((part) => `${part.charAt(0).toUpperCase()}${part.slice(1)}`)
+		.join(' ')
+}
+
+function formatModifier(formatMessage: FormatMessage, modifier: string, isMac: boolean): string {
+	switch (modifier.toUpperCase()) {
+		case 'CONTROL':
+		case 'CTRL':
+			return formatMessage(keyMessages.controlModifier)
+		case 'SHIFT':
+			return formatMessage(keyMessages.shiftModifier)
+		case 'ALT':
+			return formatMessage(keyMessages.altModifier)
+		case 'META':
+		case 'SUPER':
+			return formatMessage(isMac ? keyMessages.commandModifier : keyMessages.superModifier)
+		default:
+			return modifier
+	}
+}
+
+export function formatMinecraftKeybind(
+	formatMessage: FormatMessage,
+	value: string,
+	isMac: boolean,
+): string {
+	const [key, modifier] = splitKeybind(value)
+	let label: string
+
+	if (key.startsWith('key.keyboard.')) {
+		label = formatKeyboardLabel(formatMessage, key.slice('key.keyboard.'.length), isMac)
+	} else if (key === 'key.mouse.left') {
+		label = formatMessage(keyMessages.leftMouse)
+	} else if (key === 'key.mouse.right') {
+		label = formatMessage(keyMessages.rightMouse)
+	} else if (key === 'key.mouse.middle') {
+		label = formatMessage(keyMessages.middleMouse)
+	} else if (key.startsWith('key.mouse.')) {
+		label = formatMessage(keyMessages.mouseButton, {
+			button: key.slice('key.mouse.'.length),
+		})
+	} else if (key.startsWith('scancode.')) {
+		label = formatMessage(keyMessages.scancode, { code: key.slice('scancode.'.length) })
+	} else {
+		label = formatMessage(keyMessages.unknownKey)
+	}
+
+	if (!modifier || key === 'key.keyboard.unknown') return label
+	const modifiers = modifier
+		.split(/[+:]/)
+		.filter(Boolean)
+		.map((part) => formatModifier(formatMessage, part, isMac))
+	return [...modifiers, label].join(' + ')
+}
+
+export function minecraftKeybindConflictKey(optionId: string, value: string): string | null {
+	const normalized = value.trim().toLowerCase()
+	if (!normalized || normalized === 'key.keyboard.unknown') return null
+
+	if (optionId === 'key.debug.modifier') return null
+	if (optionId.startsWith('key.debug.') && optionId !== 'key.debug.overlay') {
+		return `debug:${normalized}`
+	}
+	return `direct:${normalized}`
+}

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/languages.ts

@@ -0,0 +1,152 @@
+import type { ComboboxOption } from '@modrinth/ui'
+
+/** Java Edition language names and regions from https://github.com/misode/mcmeta/blob/assets/pack.mcmeta. */
+const languageNames: Record<string, string> = {
+	en_us: 'English (US)',
+	af_za: 'Afrikaans (Suid-Afrika)',
+	esan: 'Andalûh (Andaluçía)',
+	enp: 'Anglish (Oned Riches)',
+	ast_es: 'Asturianu (Asturies)',
+	az_az: 'Azərbaycanca (Azərbaycan)',
+	id_id: 'Bahasa Indonesia (Indonesia)',
+	ms_my: 'Bahasa Melayu (Malaysia)',
+	tzo_mx: "Bats'i k'op (Jobel)",
+	qid: 'Bhs. Indonesia edjaän lama (Indonesia tempo doeloe)',
+	be_latn: 'Biełaruskaja (Biełaruś)',
+	bar: 'Boarisch (Bayern)',
+	bs_ba: 'Bosanski (Bosna i Hercegovina)',
+	brb: 'Braobans (Braobant)',
+	br_fr: 'Brezhoneg (Breizh)',
+	ca_es: 'Català (Catalunya)',
+	val_es: 'Català (Valencià) (País Valencià)',
+	cy_gb: 'Cymraeg (Cymru)',
+	qcb_es: 'Cántabru/Montañés (Cantabria)',
+	da_dk: 'Dansk (Danmark)',
+	se_no: 'Davvisámegiella (Sápmi)',
+	de_at: 'Deitsch (Österreich)',
+	de_de: 'Deutsch (Deutschland)',
+	et_ee: 'Eesti keel (Eesti)',
+	en_au: 'English (Australia)',
+	en_ca: 'English (Canada)',
+	en_nz: 'English (New Zealand)',
+	en_gb: 'English (United Kingdom)',
+	es_ar: 'Español (Argentina)',
+	es_cl: 'Español (Chile)',
+	es_ec: 'Español (Ecuador)',
+	es_es: 'Español (España)',
+	es_mx: 'Español (México)',
+	es_uy: 'Español (Uruguay)',
+	es_ve: 'Español (Venezuela)',
+	eo_uy: 'Esperanto (Esperantujo)',
+	eu_es: 'Euskara (Euskal Herria)',
+	fil_ph: 'Filipino (Pilipinas)',
+	fr_ca: 'Français (Canada)',
+	fr_fr: 'Français (France)',
+	fr_ch: 'Français (Suisse)',
+	fy_nl: 'Frysk (Fryslân)',
+	fra_de: 'Fränggisch (Franggn)',
+	fur_it: 'Furlan (Friûl)',
+	fo_fo: 'Føroyskt (Føroyar)',
+	ga_ie: 'Gaeilge (Éire)',
+	gl_es: 'Galego (Galicia / Galiza)',
+	go_fr: 'Galo (Bertègn)',
+	gd_gb: 'Gàidhlig (Alba)',
+	hr_hr: 'Hrvatski (Hrvatska)',
+	hn_no: 'Høgnorsk (Norig)',
+	io_en: 'Ido (Idia)',
+	ig_ng: 'Igbo (Naigeria)',
+	it_it: 'Italiano (Italia)',
+	kw_gb: 'Kernewek (Kernow)',
+	ksh: 'Kölsch/Ripoarisch (Rhingland)',
+	lol_us: 'LOLCAT (Kingdom of Cats)',
+	la_la: 'Latina (Latium)',
+	lv_lv: 'Latviešu (Latvija)',
+	lt_lt: 'Lietuvių (Lietuva)',
+	li_li: 'Limburgs (Limburg)',
+	lmo: 'Lombard (Lombardia)',
+	lb_lu: 'Lëtzebuergesch (Lëtzebuerg)',
+	hu_hu: 'Magyar (Magyarország)',
+	mt_mt: 'Malti (Malta)',
+	isv: 'Medžuslovjansky (Slovjanščina)',
+	nah: 'Mēxikatlahtōlli (Mēxiko)',
+	nl_nl: 'Nederlands (Nederland)',
+	pls: 'Ngiiwà (Ndanìꞌngà)',
+	no_no: 'Norsk bokmål (Norge)',
+	nn_no: 'Norsk nynorsk (Noreg)',
+	uz_uz: "O'zbekcha (O'zbekiston)",
+	oc_fr: 'Occitan (Occitània)',
+	en_pt: 'Pirate Speak (The Seven Seas)',
+	nds_de: 'Plattdüütsch (Düütschland)',
+	pl_pl: 'Polski (Polska)',
+	pt_br: 'Português (Brasil)',
+	pt_pt: 'Português (Portugal)',
+	qya_aa: 'Quenya (Arda)',
+	ro_ro: 'Română (România)',
+	de_ch: 'Schwiizerdütsch (Schwiiz)',
+	enws: 'Shakespearean English (Kingdom of England)',
+	sq_al: 'Shqip (Shqipëri)',
+	sk_sk: 'Slovenčina (Slovensko)',
+	sl_si: 'Slovenščina (Slovenija)',
+	so_so: 'Soomaali (Soomaaliya)',
+	sr_cs: 'Srpski (Srbija)',
+	fi_fi: 'Suomi (Suomi)',
+	sv_se: 'Svenska (Sverige)',
+	sxu: 'Säggs’sch (Saggsn)',
+	tl_ph: 'Tagalog (Pilipinas)',
+	vi_vn: 'Tiếng Việt (Việt Nam)',
+	tr_tr: 'Türkçe (Türkiye)',
+	vp_vl: 'Viossa (Vilant)',
+	nl_be: 'Vlaams (België)',
+	vec_it: 'Vèneto (Veneto)',
+	vro: 'Võro (Eesti)',
+	yo_ng: 'Yorùbá (Nàìjíríà)',
+	jbo_en: "la .lojban. (la jbogu'e)",
+	tlh_aa: "tlhIngan Hol (tlhIngan wo')",
+	tok: 'toki pona (kulupu pona)',
+	is_is: 'Íslenska (Ísland)',
+	ovd: 'Övdalska (Swerre)',
+	cs_cz: 'Čeština (Česko)',
+	szl: 'Ślōnski (Gōrny Ślōnsk)',
+	en_ud: 'ɥsᴉꞁᵷuƎ (uʍoᗡ ǝpᴉsd∩)',
+	haw_us: 'ʻŌlelo Hawaiʻi (Hawaiʻi)',
+	el_gr: 'Ελληνικά (Ελλάδα)',
+	ba_ru: 'Башҡортса (Башҡортостан, Рәсәй)',
+	be_by: 'Беларуская (Беларусь)',
+	bg_bg: 'Български (България)',
+	hal_ua: 'Галицка (Галичина, Вкраїна)',
+	ky_kg: 'Кыргызча (Кыргызстан)',
+	mk_mk: 'Македонски (Северна Македонија)',
+	mn_mn: 'Монгол (Монгол Улс)',
+	ry_ua: 'Руснацькый (Пудкарпатя, Украина)',
+	ru_ru: 'Русский (Россия)',
+	rpr: 'Русскій дореформенный (Россійская имперія)',
+	sah_sah: 'Сахалыы (Cаха Сирэ)',
+	sr_sp: 'Српски (Србија)',
+	tt_ru: 'Татарча (Татарстан, Рәсәй)',
+	uk_ua: 'Українська (Україна)',
+	cv_cu: 'Чӑвашла (Чӑваш Ен, Раҫҫей)',
+	kk_kz: 'Қазақша (Қазақстан)',
+	hy_am: 'Հայերեն (Հայաստան)',
+	yi_de: 'ייִדיש (אשכנזיש יידן)',
+	he_il: 'עברית (ישראל)',
+	ar_sa: 'العربية (العالم العربي)',
+	zlm_arab: 'بهاس ملايو (مليسيا)',
+	fa_ir: 'فارسی (ايران)',
+	hi_in: 'हिंदी (भारत)',
+	ta_in: 'தமிழ் (இந்தியா)',
+	kn_in: 'ಕನ್ನಡ (ಭಾರತ)',
+	th_th: 'ไทย (ประเทศไทย)',
+	lo_la: 'ລາວ (ປະເທດລາວ)',
+	ka_ge: 'ქართული (საქართველო)',
+	lzh: '文言 (華夏)',
+	ja_jp: '日本語 (日本)',
+	zh_cn: '简体中文 (中国大陆)',
+	zh_tw: '繁體中文 (台灣)',
+	zh_hk: '繁體中文 (香港特別行政區)',
+	ko_kr: '한국어 (대한민국)',
+	got_de: '𐌲𐌿𐍄𐍂𐌰𐌶𐌳𐌰 (𐌲𐌿𐍄𐌸𐌹𐌿𐌳𐌰)',
+}
+
+export const minecraftLanguageOptions: ComboboxOption<string>[] = Object.entries(languageNames)
+	.map(([value, label]) => ({ value, label, searchTerms: [value] }))
+	.sort((a, b) => a.label.localeCompare(b.label))

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/row.vue

@@ -0,0 +1,384 @@
+<script setup lang="ts">
+import { LinkIcon, UnknownIcon, UnlinkIcon } from '@modrinth/assets'
+import {
+	Avatar,
+	Combobox,
+	type ComboboxOption,
+	defineMessages,
+	IconButton,
+	Slider,
+	StyledInput,
+	truncatedTooltip,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, ref } from 'vue'
+import { type RouteLocationRaw, RouterLink } from 'vue-router'
+
+import type {
+	EditableGameSetting,
+	GameOptionCanonicalValue,
+	GameSettingLocaleLabel,
+} from '@/helpers/game-options'
+
+import GameSettingBooleanControl from './boolean-control.vue'
+import {
+	canonicalBooleanValue,
+	canonicalValueFromInput,
+	canonicalValueText,
+	gameSettingNumberScale,
+	isKeybindSetting,
+	settingCanBeEnabled,
+} from './editors'
+import GameKeybindInput from './keybind-input.vue'
+import { minecraftLanguageOptions } from './languages'
+import {
+	formatGameSettingChoice,
+	formatGameSettingDescription,
+	formatGameSettingLabel,
+	formatGameSettingValidation,
+	presentationMessages,
+} from './messages'
+
+const props = withDefaults(
+	defineProps<{
+		setting: EditableGameSetting
+		localeLabel?: GameSettingLocaleLabel
+		keybindConflicts?: string[]
+		disabled?: boolean
+		showSyncToggle?: boolean
+		sourceNavigationDisabled?: boolean
+	}>(),
+	{
+		keybindConflicts: () => [],
+		disabled: false,
+		showSyncToggle: true,
+		sourceNavigationDisabled: false,
+	},
+)
+
+const emit = defineEmits<{
+	'update:sync-enabled': [enabled: boolean]
+	'update:canonical-value': [value: GameOptionCanonicalValue | null]
+	'open-source': [location: RouteLocationRaw]
+}>()
+
+const { formatMessage } = useVIntl()
+const settingLabelRef = ref<HTMLElement | null>(null)
+
+const messages = defineMessages({
+	on: {
+		id: 'app.settings.synced-options.game-settings.value-on',
+		defaultMessage: 'On',
+	},
+	off: {
+		id: 'app.settings.synced-options.game-settings.value-off',
+		defaultMessage: 'Off',
+	},
+	mixed: {
+		id: 'app.settings.synced-options.game-settings.value-mixed',
+		defaultMessage: 'Different across instances',
+	},
+	unset: {
+		id: 'app.settings.synced-options.game-settings.value-unset',
+		defaultMessage: 'Choose a value',
+	},
+	syncSetting: {
+		id: 'app.settings.synced-options.game-settings.sync-setting',
+		defaultMessage: 'Sync {setting} across instances',
+	},
+	unsyncSetting: {
+		id: 'app.settings.synced-options.game-settings.unsync-setting',
+		defaultMessage: 'Stop syncing {setting} across instances',
+	},
+	syncedAcrossInstances: {
+		id: 'app.settings.synced-options.game-settings.synced-across-instances',
+		defaultMessage: 'Synced across instances',
+	},
+	notBeingSynced: {
+		id: 'app.settings.synced-options.game-settings.not-being-synced',
+		defaultMessage: 'Not being synced',
+	},
+})
+
+const settingLabel = computed(() => {
+	if (props.setting.kind === 'external') {
+		return props.localeLabel?.label ?? formatGameSettingLabel(formatMessage, props.setting)
+	}
+	return formatGameSettingLabel(formatMessage, props.setting)
+})
+const settingDescription = computed(() =>
+	formatGameSettingDescription(formatMessage, props.setting),
+)
+const settingSource = computed(() =>
+	props.setting.kind === 'external' ? props.localeLabel?.source : undefined,
+)
+const sourceLocation = computed<RouteLocationRaw>(() => {
+	const source = settingSource.value
+	if (source?.project) {
+		return { path: `/project/${source.project.id}` }
+	}
+	return {
+		name: 'InstanceContent',
+		params: { id: source?.instance_id },
+		query: { highlight: source?.file_path },
+	}
+})
+const valueText = computed(() => canonicalValueText(props.setting))
+const languageOptions = computed<ComboboxOption<string>[]>(() => {
+	const value = valueText.value
+	if (value && !minecraftLanguageOptions.some((option) => option.value === value)) {
+		return [{ value, label: value }, ...minecraftLanguageOptions]
+	}
+	return minecraftLanguageOptions
+})
+const enumOptions = computed<ComboboxOption<string>[]>(() =>
+	(props.setting.editor.choices ?? []).map((choice) => ({
+		value: choice.value,
+		label:
+			props.setting.kind === 'external'
+				? (props.localeLabel?.choices[choice.value] ?? choice.value)
+				: formatGameSettingChoice(formatMessage, props.setting.option_id, choice.value),
+	})),
+)
+const isNumber = computed(
+	() => props.setting.editor.type === 'integer' || props.setting.editor.type === 'decimal',
+)
+const isSlider = computed(
+	() => isNumber.value && props.setting.editor.min != null && props.setting.editor.max != null,
+)
+const booleanValue = computed(() => canonicalBooleanValue(props.setting))
+const numberScale = computed(() => gameSettingNumberScale(props.setting))
+const inputMin = computed(() =>
+	props.setting.editor.min === null || props.setting.editor.min === undefined
+		? undefined
+		: props.setting.editor.min * numberScale.value,
+)
+const inputMax = computed(() =>
+	props.setting.editor.max === null || props.setting.editor.max === undefined
+		? undefined
+		: props.setting.editor.max * numberScale.value,
+)
+const inputStep = computed(() =>
+	props.setting.editor.step === null || props.setting.editor.step === undefined
+		? undefined
+		: props.setting.editor.step * numberScale.value,
+)
+const sliderValue = computed(() => {
+	if (valueText.value === '') return null
+	const value = Number(valueText.value)
+	return Number.isFinite(value) ? value : null
+})
+const inputValue = computed(() =>
+	isNumber.value ? (sliderValue.value ?? undefined) : valueText.value,
+)
+const editorDisabled = computed(
+	() =>
+		props.disabled ||
+		props.setting.controlled ||
+		(props.showSyncToggle && !props.setting.sync_enabled),
+)
+const syncToggleDisabled = computed(
+	() =>
+		props.disabled ||
+		props.setting.controlled ||
+		(!props.setting.sync_enabled && !settingCanBeEnabled(props.setting)),
+)
+const placeholder = computed(() => {
+	if (props.setting.value_state === 'mixed') return formatMessage(messages.mixed)
+	if (props.setting.value_state === 'unset') return formatMessage(messages.unset)
+	if (props.setting.editor.type === 'external_raw') {
+		return formatMessage(presentationMessages.customValuePlaceholder)
+	}
+	return undefined
+})
+const validationMessage = computed(() =>
+	formatGameSettingValidation(formatMessage, props.setting.validation_error),
+)
+const syncDisabledReason = computed(() => {
+	if (validationMessage.value) return validationMessage.value
+	if (props.setting.value_state === 'invalid') {
+		return formatMessage(presentationMessages.validationInvalidValue)
+	}
+	if (props.setting.value_state === 'mixed' || props.setting.value_state === 'unset') {
+		return formatMessage(presentationMessages.validationMissingValue)
+	}
+	if (props.setting.controlled) {
+		return formatMessage(presentationMessages.bucketLauncherControlled, { count: 1 })
+	}
+	if (
+		props.setting.compatibility.total_participating > 0 &&
+		props.setting.compatibility.will_receive === 0
+	) {
+		return formatMessage(presentationMessages.compatibilityNone)
+	}
+	return undefined
+})
+const syncActionLabel = computed(() =>
+	formatMessage(props.setting.sync_enabled ? messages.unsyncSetting : messages.syncSetting, {
+		setting: settingLabel.value,
+	}),
+)
+const syncStatusTooltip = computed(() =>
+	formatMessage(
+		props.setting.sync_enabled ? messages.syncedAcrossInstances : messages.notBeingSynced,
+	),
+)
+
+function updateValue(value: string | number | boolean | undefined) {
+	emit('update:canonical-value', canonicalValueFromInput(props.setting, value))
+}
+</script>
+
+<template>
+	<div
+		class="grid min-h-[54px] min-w-0 items-center gap-2"
+		:class="
+			isSlider
+				? showSyncToggle
+					? 'grid-cols-[minmax(10rem,0.65fr)_minmax(0,1.35fr)_2.25rem]'
+					: 'grid-cols-[minmax(10rem,0.65fr)_minmax(0,1.35fr)]'
+				: showSyncToggle
+					? 'grid-cols-[minmax(0,1fr)_12rem_2.25rem]'
+					: 'grid-cols-[minmax(0,1fr)_12rem]'
+		"
+	>
+		<div class="min-w-0 pr-2">
+			<div class="flex items-center gap-2">
+				<h3
+					ref="settingLabelRef"
+					v-tooltip="truncatedTooltip(settingLabelRef, settingLabel)"
+					class="m-0 truncate text-lg font-semibold text-[var(--color-text-primary)]"
+				>
+					{{ settingLabel }}
+				</h3>
+				<span
+					v-if="validationMessage"
+					v-tooltip="validationMessage"
+					tabindex="0"
+					role="img"
+					class="flex shrink-0 rounded-md text-orange outline-none focus-visible:ring-4 focus-visible:ring-brand-shadow"
+				>
+					<UnknownIcon class="size-4" aria-hidden="true" />
+				</span>
+			</div>
+			<RouterLink v-if="settingSource" v-slot="{ href }" :to="sourceLocation" custom>
+				<a
+					:href="sourceNavigationDisabled ? undefined : href"
+					:aria-disabled="sourceNavigationDisabled || undefined"
+					class="mt-2 inline-flex max-w-full items-center gap-1.5 text-[var(--color-text-default)]"
+					:class="sourceNavigationDisabled ? 'cursor-default' : 'hover:underline'"
+					@click.prevent="!sourceNavigationDisabled && emit('open-source', sourceLocation)"
+				>
+					<Avatar
+						v-if="settingSource.project"
+						:src="settingSource.project.icon_url"
+						size="1.25rem"
+						no-shadow
+					/>
+					<span class="truncate">{{
+						settingSource.project?.title ?? settingSource.file_name
+					}}</span>
+				</a>
+			</RouterLink>
+			<p v-else-if="settingDescription" class="m-0 mt-0.5 text-[var(--color-text-default)]">
+				{{ settingDescription }}
+			</p>
+		</div>
+
+		<div class="flex min-w-0 items-center justify-end">
+			<Slider
+				v-if="isSlider"
+				size="standard"
+				:model-value="sliderValue"
+				:min="inputMin ?? 0"
+				:max="inputMax ?? 100"
+				:step="inputStep ?? 1"
+				:snap-points="setting.category_id === 'music_and_sound' ? [0, 50, 100] : []"
+				:snap-range="5"
+				:unit="setting.editor.unit === 'percent' ? '%' : undefined"
+				:placeholder="placeholder"
+				:aria-label="settingLabel"
+				:disabled="editorDisabled"
+				@update:model-value="updateValue"
+			/>
+
+			<GameSettingBooleanControl
+				v-else-if="setting.editor.type === 'bool'"
+				:model-value="booleanValue"
+				:label="settingLabel"
+				:on-label="formatMessage(messages.on)"
+				:off-label="formatMessage(messages.off)"
+				:placeholder="placeholder"
+				:disabled="editorDisabled"
+				@update:model-value="updateValue"
+			/>
+
+			<Combobox
+				v-else-if="setting.option_id === 'language'"
+				:model-value="valueText"
+				:options="languageOptions"
+				:placeholder="placeholder"
+				:disabled="editorDisabled"
+				:aria-label="settingLabel"
+				:search-input-attrs="{ 'aria-label': settingLabel }"
+				searchable
+				select-search-text-on-focus
+				class="min-w-0"
+				@update:model-value="updateValue"
+			/>
+
+			<Combobox
+				v-else-if="setting.editor.type === 'enum'"
+				:model-value="valueText"
+				:options="enumOptions"
+				:placeholder="placeholder"
+				:disabled="editorDisabled"
+				:aria-label="settingLabel"
+				class="min-w-0"
+				@update:model-value="updateValue"
+			/>
+
+			<GameKeybindInput
+				v-else-if="isKeybindSetting(setting)"
+				:model-value="valueText"
+				:setting-label="settingLabel"
+				:conflicts="keybindConflicts"
+				:mixed="setting.value_state === 'mixed'"
+				:disabled="editorDisabled"
+				@update:model-value="updateValue"
+			/>
+
+			<StyledInput
+				v-else
+				:model-value="inputValue"
+				:type="isNumber ? 'number' : 'text'"
+				:min="inputMin"
+				:max="inputMax"
+				:step="inputStep"
+				:placeholder="placeholder"
+				:disabled="editorDisabled"
+				:aria-label="settingLabel"
+				wrapper-class="w-full"
+				@update:model-value="updateValue"
+			/>
+		</div>
+
+		<span
+			v-if="showSyncToggle"
+			v-tooltip="syncToggleDisabled && syncDisabledReason ? syncDisabledReason : syncStatusTooltip"
+			class="flex justify-center"
+		>
+			<IconButton
+				:type="setting.sync_enabled ? 'chip' : 'base'"
+				:color="setting.sync_enabled ? 'blue' : undefined"
+				:label="syncActionLabel"
+				:disabled="syncToggleDisabled"
+				:aria-pressed="setting.sync_enabled"
+				@click="emit('update:sync-enabled', !setting.sync_enabled)"
+			>
+				<LinkIcon v-if="setting.sync_enabled" aria-hidden="true" />
+				<UnlinkIcon v-else aria-hidden="true" />
+			</IconButton>
+		</span>
+	</div>
+</template>

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/use-editor.ts

@@ -0,0 +1,448 @@
+import { defineMessages, injectNotificationManager, useVIntl } from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, type MaybeRefOrGetter, nextTick, onScopeDispose, ref, toValue, watch } from 'vue'
+
+import {
+	type EditableGameSetting,
+	type GameOptionCanonicalValue,
+	type GameSettingChange,
+	type GameSettingsEditorState,
+	gameSettingsKeys,
+	gameSettingsQueryOptions,
+	get_local_game_options_config,
+	get_synced_game_options_config,
+	preview_local_game_option_changes,
+	preview_synced_game_option_changes,
+	save_local_game_option_changes,
+	save_synced_game_option_changes,
+	type UpdateGameSettingsRequest,
+} from '@/helpers/game-options'
+
+import { canonicalValuesEqual, cloneGameSettingsState, gameSettingChanges } from './editors'
+
+export function useGameSettingsEditor(
+	instanceId: MaybeRefOrGetter<string | undefined>,
+	onSaved: () => void,
+) {
+	const { addNotification, handleError } = injectNotificationManager()
+	const { formatMessage } = useVIntl()
+	const queryClient = useQueryClient()
+	const messages = defineMessages({
+		conflictTitle: {
+			id: 'app.settings.synced-options.game-settings.conflict-title',
+			defaultMessage: 'These settings changed elsewhere',
+		},
+		conflictText: {
+			id: 'app.settings.synced-options.game-settings.conflict-text',
+			defaultMessage: 'We loaded the latest settings. Check your changes, then save again.',
+		},
+	})
+
+	const baseState = ref<GameSettingsEditorState | null>(null)
+	const draftState = ref<GameSettingsEditorState | null>(null)
+	const touchedValueOptionIds = ref<Set<string>>(new Set())
+	let previewTimer: ReturnType<typeof setTimeout> | null = null
+	let previewGeneration = 0
+	let loadGeneration = 0
+	let saveGeneration = 0
+
+	const editorInstanceId = ref<string>()
+	const isLocalEditor = computed(() => !!editorInstanceId.value)
+
+	const dirtyChanges = computed(() =>
+		gameSettingChanges(baseState.value, draftState.value, touchedValueOptionIds.value),
+	)
+	const isDirty = computed(() => dirtyChanges.value.length > 0)
+	const dirtyOptionIds = computed(
+		() => new Set(dirtyChanges.value.map((change) => change.option_id)),
+	)
+	const hasBlockingDraft = computed(
+		() =>
+			draftState.value?.settings.some(
+				(setting) =>
+					dirtyOptionIds.value.has(setting.option_id) &&
+					(isLocalEditor.value || setting.sync_enabled) &&
+					(!!setting.validation_error ||
+						['mixed', 'unset', 'invalid'].includes(setting.value_state)),
+			) ?? false,
+	)
+	const stateQuery = useQuery(
+		computed(() => ({
+			...gameSettingsQueryOptions(editorInstanceId.value),
+			enabled: false,
+		})),
+	)
+	const loading = computed(
+		() => !draftState.value && (stateQuery.isPending.value || stateQuery.isFetching.value),
+	)
+	const loadError = computed(() => !draftState.value && stateQuery.isError.value)
+	const previewMutation = useMutation({
+		mutationFn: ({
+			instanceId,
+			request,
+		}: {
+			instanceId?: string
+			request: UpdateGameSettingsRequest
+		}) =>
+			instanceId
+				? preview_local_game_option_changes(instanceId, request)
+				: preview_synced_game_option_changes(request),
+	})
+	const saveMutation = useMutation({
+		mutationFn: saveDraft,
+		onError: handleError,
+	})
+
+	function applyState(state: GameSettingsEditorState) {
+		baseState.value = cloneGameSettingsState(state)
+		draftState.value = cloneGameSettingsState(state)
+		touchedValueOptionIds.value = new Set()
+	}
+
+	watch(stateQuery.data, (state) => {
+		if (state && draftState.value && !isDirty.value && !saveMutation.isPending.value) {
+			applyState(state)
+		}
+	})
+
+	async function load() {
+		const generation = ++loadGeneration
+		cancelPreview()
+		editorInstanceId.value = toValue(instanceId)
+		const options = gameSettingsQueryOptions(editorInstanceId.value)
+		const cached = !editorInstanceId.value && queryClient.getQueryData(options.queryKey)
+		if (cached) {
+			applyState(cached)
+			try {
+				// A previously cached empty state is common immediately after enabling
+				// sync. Refresh it before returning so the editor does not stay empty.
+				const refreshed = await queryClient.fetchQuery({ ...options, staleTime: 0 })
+				if (generation !== loadGeneration) return false
+				applyState(refreshed)
+				return true
+			} catch (error) {
+				if (generation !== loadGeneration) return false
+				handleError(error)
+				return true
+			}
+		}
+		await nextTick()
+		const result = await queryClient
+			.fetchQuery({ ...options, staleTime: 0 })
+			.then((data) => ({ data, isError: false, error: null as unknown }))
+			.catch((error) => ({ data: undefined, isError: true, error }))
+		if (generation !== loadGeneration) return false
+		if (result.isError) {
+			handleError(result.error)
+			return false
+		}
+		if (!result.data) return false
+		applyState(result.data)
+		return true
+	}
+
+	function cancelPreview() {
+		if (previewTimer) clearTimeout(previewTimer)
+		previewTimer = null
+		previewGeneration++
+	}
+
+	function reset() {
+		cancelPreview()
+		loadGeneration++
+		saveGeneration++
+		baseState.value = null
+		draftState.value = null
+		touchedValueOptionIds.value = new Set()
+		saveMutation.reset()
+	}
+
+	function cancelChanges() {
+		if (!baseState.value) return
+		cancelPreview()
+		draftState.value = cloneGameSettingsState(baseState.value)
+		touchedValueOptionIds.value = new Set()
+	}
+
+	function setSyncEnabled(optionIds: readonly string[], enabled: boolean) {
+		if (!draftState.value) return
+		const ids = new Set(optionIds)
+		draftState.value.settings = draftState.value.settings.map((setting) =>
+			ids.has(setting.option_id)
+				? { ...setting, sync_enabled: enabled, validation_error: null }
+				: setting,
+		)
+		schedulePreview()
+	}
+
+	function schedulePreview() {
+		cancelPreview()
+		previewTimer = setTimeout(() => void preview(), 350)
+	}
+
+	function save() {
+		if (saveMutation.isPending.value || loading.value || hasBlockingDraft.value || !isDirty.value)
+			return
+		saveMutation.mutate()
+	}
+
+	async function saveAndWait(): Promise<boolean> {
+		if (loading.value || hasBlockingDraft.value || !isDirty.value) return !hasBlockingDraft.value
+		try {
+			await saveMutation.mutateAsync()
+			return true
+		} catch {
+			return false
+		}
+	}
+
+	function editorRequest(): UpdateGameSettingsRequest | null {
+		if (!baseState.value || !draftState.value) return null
+		return {
+			expected_summary_revision: draftState.value.summary_revision,
+			expected_canonical_revision: draftState.value.canonical_revision,
+			expected_catalog_revision: draftState.value.catalog_revision,
+			changes: dirtyChanges.value,
+		}
+	}
+
+	function setCanonicalValue(optionId: string, value: GameOptionCanonicalValue | null) {
+		if (!draftState.value) return
+		const currentSetting = draftState.value.settings.find(
+			(setting) => setting.option_id === optionId,
+		)
+		const baseSetting = baseState.value?.settings.find((setting) => setting.option_id === optionId)
+		if (!currentSetting) return
+
+		const revertedToBase =
+			!!baseSetting &&
+			!canonicalValuesEqual(currentSetting.canonical_value, baseSetting.canonical_value) &&
+			canonicalValuesEqual(value, baseSetting.canonical_value)
+		const touchedOptionIds = new Set(touchedValueOptionIds.value)
+		if (revertedToBase) {
+			touchedOptionIds.delete(optionId)
+		} else {
+			touchedOptionIds.add(optionId)
+		}
+		touchedValueOptionIds.value = touchedOptionIds
+		draftState.value.settings = draftState.value.settings.map((setting) =>
+			setting.option_id === optionId
+				? {
+						...setting,
+						canonical_value: value,
+						value_state: revertedToBase ? baseSetting.value_state : value ? 'canonical' : 'unset',
+						validation_error: revertedToBase ? baseSetting.validation_error : null,
+					}
+				: setting,
+		)
+		schedulePreview()
+	}
+
+	function mergePreview(preview: GameSettingsEditorState) {
+		if (!baseState.value || !draftState.value) return
+		const previousBase = cloneGameSettingsState(baseState.value)
+		const previousDraft = cloneGameSettingsState(draftState.value)
+		const dirtyIds = new Set(
+			gameSettingChanges(previousBase, previousDraft, touchedValueOptionIds.value).map(
+				(change) => change.option_id,
+			),
+		)
+		const stagedSettings = new Map(
+			previousDraft.settings
+				.filter((setting) => dirtyIds.has(setting.option_id))
+				.map((setting) => [setting.option_id, setting]),
+		)
+		const previousBaseSettings = new Map(
+			previousBase.settings.map((setting) => [setting.option_id, setting]),
+		)
+		const nextBase = cloneGameSettingsState(preview)
+		const nextDraft = cloneGameSettingsState(preview)
+		nextBase.settings = nextBase.settings.map((setting) =>
+			dirtyIds.has(setting.option_id)
+				? { ...(previousBaseSettings.get(setting.option_id) ?? setting) }
+				: setting,
+		)
+		nextDraft.settings = nextDraft.settings.map((setting): EditableGameSetting => {
+			const staged = stagedSettings.get(setting.option_id)
+			if (!staged) return setting
+			return {
+				...setting,
+				sync_enabled: staged.sync_enabled,
+				canonical_value: staged.canonical_value,
+				option_revision: staged.option_revision,
+			}
+		})
+		baseState.value = nextBase
+		draftState.value = nextDraft
+	}
+
+	async function preview() {
+		const request = editorRequest()
+		if (!request || request.changes.length === 0) {
+			previewGeneration++
+			if (baseState.value) draftState.value = cloneGameSettingsState(baseState.value)
+			return
+		}
+
+		const generation = ++previewGeneration
+		try {
+			const previewState = await previewMutation.mutateAsync({
+				instanceId: editorInstanceId.value,
+				request,
+			})
+			if (generation !== previewGeneration) return
+			mergePreview(previewState)
+		} catch {
+			return
+		}
+	}
+
+	function applyChangesToRefreshedState(
+		refreshed: GameSettingsEditorState,
+		stagedDraft: GameSettingsEditorState,
+		changes: GameSettingChange[],
+		touchedOptionIds: ReadonlySet<string>,
+		conflictOptionIds: ReadonlySet<string> = new Set(),
+	) {
+		const changesById = new Map(changes.map((change) => [change.option_id, change]))
+		const stagedSettings = new Map(
+			stagedDraft.settings.map((setting) => [setting.option_id, setting]),
+		)
+		const nextBase = cloneGameSettingsState(refreshed)
+		const nextDraft = cloneGameSettingsState(refreshed)
+
+		nextDraft.settings = nextDraft.settings.map((setting) => {
+			const change = changesById.get(setting.option_id)
+			const staged = stagedSettings.get(setting.option_id)
+			if (!change || !staged) return setting
+
+			return {
+				...setting,
+				...(change.sync_enabled !== undefined ? { sync_enabled: staged.sync_enabled } : {}),
+				...(change.canonical_value !== undefined
+					? {
+							canonical_value: staged.canonical_value,
+							value_state: staged.value_state,
+						}
+					: {}),
+				validation_error: conflictOptionIds.has(setting.option_id)
+					? 'changed_since_opened'
+					: staged.validation_error,
+			}
+		})
+
+		baseState.value = nextBase
+		draftState.value = nextDraft
+		touchedValueOptionIds.value = new Set(
+			[...touchedOptionIds].filter(
+				(optionId) => changesById.get(optionId)?.canonical_value !== undefined,
+			),
+		)
+	}
+
+	async function saveDraft() {
+		const request = editorRequest()
+		if (!request || request.changes.length === 0 || !baseState.value || !draftState.value) return
+
+		cancelPreview()
+		const targetInstanceId = editorInstanceId.value
+		const generation = ++saveGeneration
+		const previousBase = cloneGameSettingsState(baseState.value)
+		const optimisticState = cloneGameSettingsState(draftState.value)
+		const previouslyTouchedOptionIds = new Set(touchedValueOptionIds.value)
+		baseState.value = cloneGameSettingsState(optimisticState)
+		touchedValueOptionIds.value = new Set()
+		try {
+			await queryClient.cancelQueries({
+				queryKey: gameSettingsQueryOptions(targetInstanceId).queryKey,
+			})
+			const result = targetInstanceId
+				? await save_local_game_option_changes(targetInstanceId, request)
+				: await save_synced_game_option_changes(request)
+			const refreshed =
+				result.state ??
+				(targetInstanceId
+					? await get_local_game_options_config(targetInstanceId)
+					: await get_synced_game_options_config())
+			queryClient.setQueryData(gameSettingsQueryOptions(targetInstanceId).queryKey, refreshed)
+			if (targetInstanceId) {
+				void queryClient.invalidateQueries({ queryKey: gameSettingsKeys.synced })
+			}
+			if (result.conflicts?.length) {
+				if (generation !== saveGeneration || !draftState.value) return
+				previewGeneration++
+				const stagedDraft = cloneGameSettingsState(draftState.value)
+				const retainedTouchedOptionIds = new Set([
+					...previouslyTouchedOptionIds,
+					...touchedValueOptionIds.value,
+				])
+				const stagedChanges = gameSettingChanges(
+					previousBase,
+					stagedDraft,
+					retainedTouchedOptionIds,
+				)
+				const conflicts = new Set(result.conflicts)
+				applyChangesToRefreshedState(
+					refreshed,
+					stagedDraft,
+					stagedChanges,
+					retainedTouchedOptionIds,
+					conflicts,
+				)
+
+				addNotification({
+					type: 'warning',
+					title: formatMessage(messages.conflictTitle),
+					text: formatMessage(messages.conflictText),
+				})
+				if (isDirty.value) {
+					schedulePreview()
+				}
+				return
+			}
+
+			if (generation !== saveGeneration) {
+				onSaved()
+				return
+			}
+			if (!baseState.value || !draftState.value) return
+			previewGeneration++
+			const stagedDraft = cloneGameSettingsState(draftState.value)
+			const touchedSinceSave = new Set(touchedValueOptionIds.value)
+			const changesSinceSave = gameSettingChanges(optimisticState, stagedDraft, touchedSinceSave)
+			applyChangesToRefreshedState(refreshed, stagedDraft, changesSinceSave, touchedSinceSave)
+			if (changesSinceSave.length > 0) schedulePreview()
+			onSaved()
+		} catch (error) {
+			if (generation === saveGeneration && draftState.value) {
+				previewGeneration++
+				baseState.value = previousBase
+				touchedValueOptionIds.value = new Set([
+					...previouslyTouchedOptionIds,
+					...touchedValueOptionIds.value,
+				])
+				if (dirtyChanges.value.length > 0) schedulePreview()
+			}
+			throw error
+		}
+	}
+
+	onScopeDispose(reset)
+
+	return {
+		draftState,
+		isLocalEditor,
+		isDirty,
+		hasBlockingDraft,
+		loading,
+		loadError,
+		saving: saveMutation.isPending,
+		load,
+		reset,
+		cancelChanges,
+		setSyncEnabled,
+		setCanonicalValue,
+		save,
+		saveAndWait,
+	}
+}

apps/app-frontend/src/components/ui/settings/instances/game-settings-modal/use-labels.ts

@@ -0,0 +1,138 @@
+import { useDebugLogger, useVIntl } from '@modrinth/ui'
+import { listen, type UnlistenFn } from '@tauri-apps/api/event'
+import { computed, type MaybeRefOrGetter, onScopeDispose, shallowRef, toValue, watch } from 'vue'
+
+import {
+	type EditableGameSetting,
+	type GameSettingLocaleLabel,
+	get_game_setting_locale_labels,
+} from '@/helpers/game-options'
+
+export function useGameSettingLabels(
+	opened: MaybeRefOrGetter<boolean>,
+	instanceId: MaybeRefOrGetter<string | undefined>,
+	settings: MaybeRefOrGetter<EditableGameSetting[]>,
+) {
+	const debug = useDebugLogger('GameSettingLabels')
+	const { locale } = useVIntl()
+	const labels = shallowRef<Record<string, GameSettingLocaleLabel>>({})
+	const optionIds = computed(() =>
+		toValue(settings)
+			.filter((setting) => setting.kind === 'external')
+			.map((setting) => setting.option_id)
+			.sort(),
+	)
+	let generation = 0
+	let stopListening: UnlistenFn | undefined
+	let refreshSources = false
+
+	debug('setup', { opened: toValue(opened), instanceId: toValue(instanceId), locale: locale.value })
+
+	async function refresh(reason: string) {
+		if (!toValue(opened) || !optionIds.value.length) {
+			debug('refresh skipped', {
+				reason,
+				opened: toValue(opened),
+				optionCount: optionIds.value.length,
+			})
+			return
+		}
+		const request = ++generation
+		const reindex = refreshSources
+		const requestedIds = [...optionIds.value]
+		const started = performance.now()
+		refreshSources = false
+		debug('request started', {
+			request,
+			reason,
+			instanceId: toValue(instanceId),
+			locale: locale.value,
+			reindex,
+			optionIds: requestedIds,
+		})
+		try {
+			const result = await get_game_setting_locale_labels(
+				toValue(instanceId),
+				locale.value,
+				requestedIds,
+				reindex,
+			)
+			const applied = request === generation && toValue(opened)
+			debug('request completed', {
+				request,
+				generation,
+				applied,
+				opened: toValue(opened),
+				elapsedMs: Math.round(performance.now() - started),
+				returnedCount: Object.keys(result.settings).length,
+				missingOptionIds: requestedIds.filter((id) => !result.settings[id]),
+				labelSample: Object.entries(result.settings).slice(0, 8),
+			})
+			if (applied) labels.value = result.settings
+		} catch (error) {
+			debug('request failed', {
+				request,
+				reason,
+				elapsedMs: Math.round(performance.now() - started),
+				error,
+			})
+		}
+	}
+
+	watch(
+		() => toValue(opened),
+		(active, _, onCleanup) => {
+			debug('modal state changed', { active, generation, optionCount: optionIds.value.length })
+			let cancelled = false
+			onCleanup(() => {
+				cancelled = true
+				stopListening?.()
+				stopListening = undefined
+				generation++
+				labels.value = {}
+				debug('modal cleanup: listener removed and labels cleared', { generation })
+			})
+			if (!active) return
+			refreshSources = true
+			debug('registering locale update listener')
+			void listen('game-option-locales-updated', () => {
+				debug('received game-option-locales-updated')
+				void refresh('locale update event')
+			})
+				.then((unlisten) => {
+					debug('locale update listener registered', { cancelled })
+					if (cancelled) unlisten()
+					else {
+						stopListening = unlisten
+						void refresh('listener registered')
+					}
+				})
+				.catch((error) => {
+					debug('locale update listener failed', { cancelled, error })
+					if (!cancelled) void refresh('listener failed')
+				})
+		},
+		{ flush: 'sync' },
+	)
+
+	watch([locale, () => toValue(instanceId), () => optionIds.value.join('\n')], () => {
+		generation++
+		labels.value = {}
+		debug('locale, instance or option IDs changed: labels cleared', {
+			generation,
+			locale: locale.value,
+			instanceId: toValue(instanceId),
+			optionCount: optionIds.value.length,
+		})
+		void refresh('request inputs changed')
+	})
+
+	onScopeDispose(() => {
+		generation++
+		stopListening?.()
+		labels.value = {}
+		debug('scope disposed', { generation })
+	})
+
+	return labels
+}

apps/app-frontend/src/components/ui/settings/instances/servers-modal.vue

@@ -0,0 +1,476 @@
+<script setup lang="ts">
+import {
+	ClipboardCopyIcon,
+	EditIcon,
+	MoreVerticalIcon,
+	NoSignalIcon,
+	RefreshCwIcon,
+	SaveIcon,
+	SearchIcon,
+	SignalIcon,
+	TrashIcon,
+	XIcon,
+} from '@modrinth/assets'
+import {
+	Avatar,
+	Button,
+	type ButtonMenuOption,
+	commonMessages,
+	defineMessages,
+	FilterPills,
+	injectNotificationManager,
+	NewModal,
+	StyledInput,
+	Table,
+	type TableColumn,
+	TeleportOverflowMenu,
+	useVIntl,
+} from '@modrinth/ui'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/vue-query'
+import { computed, nextTick, ref } from 'vue'
+
+import { remove_synced_server, type SyncedServer, update_synced_server } from '@/helpers/instance'
+import { syncedOptionsKeys, syncedServersQueryOptions } from '@/helpers/synced-options'
+import { copyToClipboard } from '@/helpers/utils'
+import {
+	refreshServerData,
+	refreshServers,
+	type ServerData,
+	type ServerWorld,
+} from '@/helpers/worlds'
+
+const { handleError } = injectNotificationManager()
+const { formatMessage } = useVIntl()
+const queryClient = useQueryClient()
+const serverEditorModal = ref<InstanceType<typeof NewModal> | null>(null)
+const editServerModal = ref<InstanceType<typeof NewModal> | null>(null)
+const editedServer = ref<SyncedServer | null>(null)
+const serversQuery = useQuery(syncedServersQueryOptions())
+const syncedServers = computed(() => serversQuery.data.value ?? [])
+const serverData = ref<Record<string, ServerData>>({})
+const serverSearch = ref('')
+const selectedServerFilters = ref<string[]>([])
+
+const messages = defineMessages({
+	serverEditorTitle: {
+		id: 'app.settings.synced-options.multiplayer-servers.editor-title',
+		defaultMessage: 'Edit synced servers',
+	},
+	editServerTitle: {
+		id: 'instance.edit-server.title',
+		defaultMessage: 'Edit server',
+	},
+	serverName: {
+		id: 'app.settings.synced-options.multiplayer-servers.name',
+		defaultMessage: 'Server name',
+	},
+	serverAddress: {
+		id: 'app.settings.synced-options.multiplayer-servers.address',
+		defaultMessage: 'Server address',
+	},
+	searchServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.search',
+		defaultMessage:
+			'Search {count, number} {count, plural, one {synced server} other {synced servers}}...',
+	},
+	serverStatus: {
+		id: 'app.settings.synced-options.multiplayer-servers.status',
+		defaultMessage: 'Status',
+	},
+	onlineFilter: {
+		id: 'app.settings.synced-options.multiplayer-servers.filter-online',
+		defaultMessage: 'Online',
+	},
+	offlineFilter: {
+		id: 'app.settings.synced-options.multiplayer-servers.filter-offline',
+		defaultMessage: 'Offline',
+	},
+	playersOnline: {
+		id: 'app.settings.synced-options.multiplayer-servers.players-online',
+		defaultMessage: '{count, number} online',
+	},
+	noMatchingServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.no-results',
+		defaultMessage: 'No synced servers match your search or filters.',
+	},
+	serverCount: {
+		id: 'app.settings.synced-options.multiplayer-servers.count',
+		defaultMessage: '{count, plural, one {# server} other {# servers}}',
+	},
+	moreServerOptions: {
+		id: 'app.settings.synced-options.multiplayer-servers.more-options',
+		defaultMessage: 'More server options',
+	},
+	copyServerAddress: {
+		id: 'app.settings.synced-options.multiplayer-servers.copy-address',
+		defaultMessage: 'Copy address',
+	},
+	noSyncedServers: {
+		id: 'app.settings.synced-options.multiplayer-servers.empty',
+		defaultMessage: 'No user-added servers are currently synced.',
+	},
+})
+
+const serverWorlds = computed<ServerWorld[]>(() =>
+	syncedServers.value.map((server, index) => ({
+		name: server.name,
+		type: 'server',
+		index,
+		server_id: server.id,
+		address: server.address,
+		pack_status:
+			server.accept_textures === true
+				? 'enabled'
+				: server.accept_textures === false
+					? 'disabled'
+					: 'prompt',
+		display_status: 'normal',
+	})),
+)
+
+type SyncedServerTableColumn = 'server' | 'status' | 'version' | 'actions'
+type SyncedServerTableRow = SyncedServer & {
+	server: string
+	status: 'online' | 'offline'
+	version: string
+	actions: null
+}
+
+const syncedServerColumns = computed<TableColumn<SyncedServerTableColumn>[]>(() => [
+	{
+		key: 'server',
+		label: formatMessage(commonMessages.serverLabel),
+		width: '45%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'status',
+		label: formatMessage(messages.serverStatus),
+		width: '25%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'version',
+		label: formatMessage(commonMessages.versionLabel),
+		width: '22%',
+		cellClass: '!h-16',
+	},
+	{
+		key: 'actions',
+		label: formatMessage(commonMessages.actionsLabel),
+		align: 'right',
+		width: '6rem',
+		cellClass: '!h-16',
+	},
+])
+
+const syncedServerFilterOptions = computed(() => [
+	{ id: 'online', label: formatMessage(messages.onlineFilter) },
+	{ id: 'offline', label: formatMessage(messages.offlineFilter) },
+])
+
+const syncedServerRows = computed<SyncedServerTableRow[]>(() =>
+	syncedServers.value.map((server) => ({
+		...server,
+		server: server.name,
+		status: serverData.value[server.address]?.status ? 'online' : 'offline',
+		version: serverData.value[server.address]?.status?.version?.name ?? '',
+		actions: null,
+	})),
+)
+
+const statusFilteredSyncedServerRows = computed(() => {
+	if (selectedServerFilters.value.length === 0) return syncedServerRows.value
+	return syncedServerRows.value.filter((server) =>
+		selectedServerFilters.value.includes(server.status),
+	)
+})
+
+const filteredSyncedServerRows = computed(() => {
+	const search = serverSearch.value.trim().toLocaleLowerCase()
+	if (!search) return statusFilteredSyncedServerRows.value
+	return statusFilteredSyncedServerRows.value.filter(
+		(server) =>
+			server.name.toLocaleLowerCase().includes(search) ||
+			server.address.toLocaleLowerCase().includes(search),
+	)
+})
+
+const refreshMutation = useMutation({
+	mutationFn: () => refreshServers(serverWorlds.value, serverData.value, null),
+	onError: handleError,
+})
+const refreshingAllSyncedServers = refreshMutation.isPending
+const saveMutation = useMutation({
+	mutationFn: update_synced_server,
+	onSuccess: async (_, server) => {
+		queryClient.setQueryData<SyncedServer[]>(syncedOptionsKeys.servers, (servers) =>
+			servers?.map((current) => (current.id === server.id ? { ...server } : current)),
+		)
+		await queryClient.invalidateQueries({ queryKey: ['worlds'] })
+		void refreshSyncedServer(server.address).catch(handleError)
+	},
+	onError: handleError,
+})
+const removeMutation = useMutation({
+	mutationFn: remove_synced_server,
+	onSuccess: async (_, serverId) => {
+		queryClient.setQueryData<SyncedServer[]>(syncedOptionsKeys.servers, (servers) =>
+			servers?.filter((server) => server.id !== serverId),
+		)
+		await queryClient.invalidateQueries({ queryKey: ['worlds'] })
+	},
+	onError: handleError,
+})
+
+async function show() {
+	const result = await serversQuery.refetch()
+	if (result.isError) {
+		handleError(result.error)
+		return
+	}
+	serverSearch.value = ''
+	selectedServerFilters.value = []
+	serverData.value = {}
+	serverEditorModal.value?.show()
+	refreshAllSyncedServers()
+}
+
+function openSyncedServerEditor(server: SyncedServer) {
+	editedServer.value = { ...server }
+	editServerModal.value?.show()
+}
+
+async function saveSyncedServer() {
+	if (!editedServer.value || saveMutation.isPending.value) return
+	try {
+		await saveMutation.mutateAsync({ ...editedServer.value })
+		await nextTick()
+		editServerModal.value?.hide()
+	} catch {
+		return
+	}
+}
+
+async function refreshSyncedServer(address: string) {
+	serverData.value[address] ??= { refreshing: true }
+	await refreshServerData(serverData.value[address], null, address)
+}
+
+function refreshAllSyncedServers() {
+	if (!refreshingAllSyncedServers.value) refreshMutation.mutate()
+}
+
+function syncedServerMenuOptions(server: SyncedServer): ButtonMenuOption[] {
+	return [
+		{
+			id: 'refresh',
+			label: formatMessage(commonMessages.refreshButton),
+			icon: RefreshCwIcon,
+			action: () => refreshSyncedServer(server.address).catch(handleError),
+		},
+		{
+			id: 'copy-address',
+			label: formatMessage(messages.copyServerAddress),
+			icon: ClipboardCopyIcon,
+			action: () => copyToClipboard(server.address),
+		},
+		{
+			id: 'edit',
+			label: formatMessage(commonMessages.editButton),
+			icon: EditIcon,
+			action: () => openSyncedServerEditor(server),
+		},
+		{ type: 'divider' },
+		{
+			id: 'remove',
+			label: formatMessage(commonMessages.removeButton),
+			icon: TrashIcon,
+			tone: 'red',
+			disabled: removeMutation.isPending.value,
+			action: () => removeMutation.mutate(server.id),
+		},
+	]
+}
+
+defineExpose({ show })
+</script>
+
+<template>
+	<NewModal
+		ref="serverEditorModal"
+		:header="formatMessage(messages.serverEditorTitle)"
+		no-padding
+		max-width="min(928px, calc(100vw - 2rem))"
+		width="min(928px, calc(100vw - 2rem))"
+	>
+		<div class="flex max-h-[min(600px,calc(95vh-10rem))] flex-col">
+			<div
+				class="flex shrink-0 flex-col gap-4 border-0 border-b border-solid border-surface-4 px-6 py-4"
+			>
+				<StyledInput
+					v-model="serverSearch"
+					:icon="SearchIcon"
+					type="search"
+					autocomplete="off"
+					:spellcheck="false"
+					:placeholder="formatMessage(messages.searchServers, { count: syncedServers.length })"
+					size="medium"
+					:aria-label="formatMessage(messages.searchServers, { count: syncedServers.length })"
+					:clear-label="formatMessage(commonMessages.clearButton)"
+					clearable
+				/>
+
+				<div class="flex flex-wrap items-center justify-between gap-3">
+					<FilterPills v-model="selectedServerFilters" :options="syncedServerFilterOptions">
+						<template #all>
+							{{ formatMessage(commonMessages.allProjectType) }}
+						</template>
+					</FilterPills>
+					<Button
+						type="quiet"
+						:disabled="refreshingAllSyncedServers || syncedServers.length === 0"
+						interaction="none"
+						@click="refreshAllSyncedServers"
+					>
+						<RefreshCwIcon
+							:class="{ 'animate-spin': refreshingAllSyncedServers }"
+							aria-hidden="true"
+						/>
+						{{ formatMessage(commonMessages.refreshButton) }}
+					</Button>
+				</div>
+			</div>
+
+			<div class="flex min-h-0 flex-1 flex-col overflow-hidden">
+				<div
+					v-if="syncedServers.length === 0"
+					class="flex flex-1 items-center justify-center p-8 text-center text-[var(--color-text-tertiary)]"
+				>
+					{{ formatMessage(messages.noSyncedServers) }}
+				</div>
+				<div
+					v-else-if="filteredSyncedServerRows.length === 0"
+					class="flex flex-1 items-center justify-center p-8 text-center text-[var(--color-text-tertiary)]"
+				>
+					{{ formatMessage(messages.noMatchingServers) }}
+				</div>
+				<div v-else class="min-h-0 flex-1 overflow-y-auto">
+					<Table
+						:columns="syncedServerColumns"
+						:data="filteredSyncedServerRows"
+						row-key="id"
+						table-min-width="44rem"
+						class="!rounded-none !border-0"
+					>
+						<template #cell-server="{ row }">
+							<div class="flex min-w-0 items-center gap-3">
+								<Avatar
+									:src="serverData[row.address]?.status?.favicon"
+									:alt="row.name"
+									:tint-by="row.address"
+									size="32px"
+									no-shadow
+									class="shrink-0 !rounded-lg"
+								/>
+								<div class="flex min-w-0 flex-col">
+									<span class="truncate font-semibold text-[var(--color-text-primary)]">{{
+										row.name
+									}}</span>
+									<span class="truncate text-sm text-[var(--color-text-tertiary)]">{{
+										row.address
+									}}</span>
+								</div>
+							</div>
+						</template>
+						<template #cell-status="{ row }">
+							<span class="inline-flex items-center gap-1.5 font-medium">
+								<RefreshCwIcon
+									v-if="serverData[row.address]?.refreshing"
+									class="size-4 shrink-0 animate-spin"
+									aria-hidden="true"
+								/>
+								<SignalIcon
+									v-else-if="serverData[row.address]?.status"
+									class="size-4 shrink-0 text-green"
+									aria-hidden="true"
+								/>
+								<NoSignalIcon v-else class="size-4 shrink-0" aria-hidden="true" />
+								<template v-if="serverData[row.address]?.refreshing">
+									{{ formatMessage(commonMessages.loadingLabel) }}
+								</template>
+								<template v-else-if="serverData[row.address]?.status">
+									{{
+										formatMessage(messages.playersOnline, {
+											count: serverData[row.address]?.status?.players?.online ?? 0,
+										})
+									}}
+								</template>
+								<template v-else>{{ formatMessage(messages.offlineFilter) }}</template>
+							</span>
+						</template>
+						<template #cell-version="{ row }">
+							<span class="block truncate">{{ row.version || '—' }}</span>
+						</template>
+						<template #cell-actions="{ row }">
+							<div class="flex justify-end">
+								<TeleportOverflowMenu
+									type="quiet"
+									:label="formatMessage(messages.moreServerOptions)"
+									:options="syncedServerMenuOptions(row)"
+								>
+									<MoreVerticalIcon aria-hidden="true" />
+								</TeleportOverflowMenu>
+							</div>
+						</template>
+					</Table>
+				</div>
+			</div>
+
+			<div
+				class="flex shrink-0 items-center border-0 border-t border-solid border-surface-4 px-6 py-4"
+			>
+				<span class="font-medium text-[var(--color-text-default)]">
+					{{ formatMessage(messages.serverCount, { count: syncedServers.length }) }}
+				</span>
+			</div>
+		</div>
+	</NewModal>
+
+	<NewModal
+		ref="editServerModal"
+		:header="formatMessage(messages.editServerTitle)"
+		:disable-close="saveMutation.isPending.value"
+		max-width="500px"
+		width="500px"
+	>
+		<div v-if="editedServer" class="flex flex-col gap-4">
+			<label class="flex flex-col gap-2 font-semibold text-[var(--color-text-primary)]">
+				{{ formatMessage(messages.serverName) }}
+				<StyledInput v-model="editedServer.name" autocomplete="off" wrapper-class="w-full" />
+			</label>
+			<label class="flex flex-col gap-2 font-semibold text-[var(--color-text-primary)]">
+				{{ formatMessage(messages.serverAddress) }}
+				<StyledInput v-model="editedServer.address" autocomplete="off" wrapper-class="w-full" />
+			</label>
+		</div>
+		<template #actions>
+			<div class="flex justify-end gap-2">
+				<Button type="outlined" @click="editServerModal?.hide()">
+					<XIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.cancelButton) }}
+				</Button>
+				<Button
+					type="colored"
+					color="brand"
+					:disabled="!editedServer?.address"
+					:loading="saveMutation.isPending.value"
+					@click="saveSyncedServer"
+				>
+					<SaveIcon aria-hidden="true" />
+					{{ formatMessage(commonMessages.saveChangesButton) }}
+				</Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/composables/skin-site-session.test.ts

@@ -605,3 +605,110 @@ test('skin updates are restricted to known non-Mojang players and validated resu
 	setSkinSiteFrame(null)
 	resetSkinSiteSession()
 })
+
+test('hosted create auto-authenticates the first skin site player when no game account exists', async () => {
+	const previousWindow = Object.getOwnPropertyDescriptor(globalThis, 'window')
+	const calls: Array<{ command: string; args: Record<string, unknown> }> = []
+	let accounts: Array<{
+		account_type: string
+		yggdrasil?: { api_root: string }
+	}> = []
+	const frame = {
+		postMessage(data: { type: string; requestId: string }) {
+			if (data.type === 'starlight-pack-token-request') {
+				receiveSkinSiteMessage(
+					{
+						origin: SKIN_SITE_ORIGIN,
+						source: frame,
+						data: {
+							type: 'starlight-pack-token-result',
+							requestId: data.requestId,
+							token: 'site.jwt.secret',
+						},
+					} as MessageEvent,
+					frame,
+				)
+				return
+			}
+			if (data.type === 'starlight-skin-players-request') {
+				receiveSkinSiteMessage(
+					{
+						origin: SKIN_SITE_ORIGIN,
+						source: frame,
+						data: {
+							type: 'starlight-skin-players-result',
+							requestId: data.requestId,
+							ok: true,
+							players: [
+								{
+									uuid: '11111111-1111-1111-1111-111111111111',
+									name: 'AutoPlayer',
+									isMojang: false,
+									skinState: 'empty',
+								},
+							],
+						},
+					} as MessageEvent,
+					frame,
+				)
+			}
+		},
+	} as unknown as Window
+	Object.defineProperty(globalThis, 'window', {
+		configurable: true,
+		value: {
+			__TAURI_INTERNALS__: {
+				async invoke(command: string, args: Record<string, unknown>) {
+					calls.push({ command, args })
+					if (command === 'plugin:install|hosted_has_game_account') {
+						return accounts.some(
+							(account) =>
+								account.account_type === 'microsoft' ||
+								(account.account_type === 'yggdrasil' &&
+									account.yggdrasil?.api_root.replace(/\/+$/, '') ===
+										'https://skin.starlight.cool/yggdrasil'),
+						)
+					}
+					if (command === 'plugin:auth|login_skin_site_player') {
+						accounts = [
+							{
+								account_type: 'yggdrasil',
+								yggdrasil: { api_root: 'https://skin.starlight.cool/yggdrasil' },
+							},
+						]
+						return null
+					}
+					if (command === 'plugin:instance|instance_get') return null
+					return command === 'plugin:install|hosted_create' ? 'auto-instance' : null
+				},
+			},
+		},
+	})
+	try {
+		resetSkinSiteSession()
+		setSkinSiteFrame(frame)
+		receiveSkinSiteMessage(
+			{
+				origin: SKIN_SITE_ORIGIN,
+				source: frame,
+				data: {
+					type: 'starlight-skin-session',
+					status: 'signed-in',
+					user: { uuid: 'site-user', username: 'Site' },
+				},
+			} as MessageEvent,
+			frame,
+		)
+		await requestSkinSitePlayers().catch(() => {})
+		assert.equal(await hostedCreate(), 'auto-instance')
+		assert.ok(
+			calls.some(({ command }) => command === 'plugin:auth|login_skin_site_player'),
+			'expected automatic player authentication',
+		)
+	} finally {
+		resetSkinSiteSession()
+		setSkinSiteFrame(null)
+		if (previousWindow) Object.defineProperty(globalThis, 'window', previousWindow)
+		else delete (globalThis as { window?: unknown }).window
+	}
+})

apps/app-frontend/src/helpers/anniversary.ts

@@ -0,0 +1,61 @@
+/**
+ * Starlight anniversary helpers.
+ *
+ * Starlight's first release was on 2014-10-04, so every October 4th the
+ * launcher shows a small celebration. The anniversary number is simply
+ * `currentYear - 2014`.
+ */
+
+/** Year of Starlight's first release. */
+export const STARLIGHT_FOUNDING_YEAR = 2014
+
+/** Month (1-12) of Starlight's anniversary. */
+export const STARLIGHT_ANNIVERSARY_MONTH = 10
+
+/** Day of month of Starlight's anniversary. */
+export const STARLIGHT_ANNIVERSARY_DAY = 4
+
+/**
+ * Whether the given date falls on Starlight's anniversary (October 4th).
+ * Uses the local timezone, which is what the launcher user experiences.
+ */
+export function isAnniversary(date: Date = new Date()): boolean {
+	return (
+		date.getMonth() + 1 === STARLIGHT_ANNIVERSARY_MONTH &&
+		date.getDate() === STARLIGHT_ANNIVERSARY_DAY
+	)
+}
+
+/**
+ * The anniversary number for the given date (e.g. 12 for 2026).
+ * Not clamped: callers decide whether to guard against pre-2014 dates.
+ */
+export function anniversaryYear(date: Date = new Date()): number {
+	return date.getFullYear() - STARLIGHT_FOUNDING_YEAR
+}
+
+/**
+ * Whether the celebration should currently be shown.
+ *
+ * Normally this is only true on October 4th, but the developer-page
+ * `force_anniversary_celebration` feature flag forces it on for previewing.
+ */
+export function shouldCelebrate(force = false, date: Date = new Date()): boolean {
+	return force || isAnniversary(date)
+}
+
+/** English ordinal suffix for a number (1 -> "1st", 12 -> "12th"). */
+export function ordinal(n: number): string {
+	const mod100 = n % 100
+	if (mod100 >= 11 && mod100 <= 13) return `${n}th`
+	switch (n % 10) {
+		case 1:
+			return `${n}st`
+		case 2:
+			return `${n}nd`
+		case 3:
+			return `${n}rd`
+		default:
+			return `${n}th`
+	}
+}

apps/app-frontend/src/helpers/font-family.ts

@@ -0,0 +1,179 @@
+/**
+ * Font family plumbing shared by the appearance settings pickers and the theme
+ * store. Kept free of imports so `node --test` can load it directly.
+ */
+
+/** Mirrors `--font-standard` in `packages/assets/styles/defaults.scss`. */
+export const DEFAULT_UI_FONT_STACK =
+	'Inter, -apple-system, BlinkMacSystemFont, Segoe UI, Oxygen, Ubuntu, Roboto, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif'
+
+/** Mirrors `--mono-font` in `packages/assets/styles/defaults.scss`. */
+export const DEFAULT_MONO_FONT_STACK =
+	'ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace'
+
+/** Picker value for "follow the launcher default"; persisted as `null`. */
+export const FOLLOW_DEFAULT_FONT = ''
+
+export interface SystemFontFamily {
+	family: string
+	monospaced: boolean
+}
+
+export interface FontFamilyOption {
+	value: string
+	label: string
+	subLabel?: string
+	searchTerms?: string[]
+}
+
+export type FontFamilyOptionOrDivider = FontFamilyOption | { type: 'divider' }
+
+export interface FontFamilyOptionsConfig {
+	defaultLabel: string
+	selected?: string | null
+	missingLabel?: string
+	monospaceLabel?: string
+	groupMonospaced?: boolean
+}
+
+const MAX_FONT_FAMILY_LENGTH = 128
+
+/**
+ * Quotes and escapes an installed family name so it cannot break out of the
+ * font-family declaration it is spliced into. Returns null when the name has
+ * nothing usable left.
+ */
+export function cssFontFamilyName(name: string): string | null {
+	const trimmed = name.replace(/\p{Cc}/gu, '').trim()
+
+	if (!trimmed || trimmed.length > MAX_FONT_FAMILY_LENGTH) {
+		return null
+	}
+
+	return `"${trimmed.replace(/\\/g, '\\\\').replace(/"/g, '\\"')}"`
+}
+
+/**
+ * The value written into `--font-standard` / `--mono-font`. The launcher stack
+ * always trails the chosen family so an unresolvable name degrades to the
+ * previous default instead of the user agent's own font.
+ */
+export function resolveFontFamily(
+	setting: string | null | undefined,
+	fallbackStack: string,
+): string {
+	if (!setting) {
+		return fallbackStack
+	}
+
+	const family = cssFontFamilyName(setting)
+
+	return family ? `${family}, ${fallbackStack}` : fallbackStack
+}
+
+export function fontSettingToOptionValue(setting: string | null | undefined): string {
+	return setting ?? FOLLOW_DEFAULT_FONT
+}
+
+export function optionValueToFontSetting(value: string): string | null {
+	const trimmed = value.trim()
+
+	return trimmed === FOLLOW_DEFAULT_FONT ? null : trimmed
+}
+
+function compareFamilies(first: SystemFontFamily, second: SystemFontFamily): number {
+	const left = first.family.toLowerCase()
+	const right = second.family.toLowerCase()
+
+	if (left === right) {
+		return 0
+	}
+
+	return left < right ? -1 : 1
+}
+
+function toOption(family: SystemFontFamily, monospaceLabel?: string): FontFamilyOption {
+	return {
+		value: family.family,
+		label: family.family,
+		...(family.monospaced && monospaceLabel
+			? { subLabel: monospaceLabel, searchTerms: [monospaceLabel] }
+			: {}),
+	}
+}
+
+/**
+ * The spelling the font list uses for a stored family. Font names are matched
+ * case-insensitively so a stored value that only differs in case still selects
+ * its option instead of leaving the picker blank.
+ */
+export function canonicalFontFamily(
+	fonts: SystemFontFamily[],
+	setting: string | null | undefined,
+): string {
+	const selected = optionValueToFontSetting(setting ?? '')
+	if (!selected) {
+		return FOLLOW_DEFAULT_FONT
+	}
+
+	const listed = fonts.find((font) => font.family.trim().toLowerCase() === selected.toLowerCase())
+
+	return listed ? listed.family.trim() : selected
+}
+
+/**
+ * Builds the picker options for the installed font collection: the default
+ * entry first, the current selection re-added when it is no longer installed,
+ * and — for the monospace picker — monospaced families ahead of the rest.
+ */
+export function buildFontFamilyOptions(
+	fonts: SystemFontFamily[],
+	config: FontFamilyOptionsConfig,
+): FontFamilyOptionOrDivider[] {
+	const families = new Map<string, SystemFontFamily>()
+	for (const font of fonts) {
+		const family = font.family.trim()
+
+		if (!family) {
+			continue
+		}
+
+		const key = family.toLowerCase()
+		const known = families.get(key)
+
+		if (known) {
+			known.monospaced ||= font.monospaced
+		} else {
+			families.set(key, { family, monospaced: font.monospaced })
+		}
+	}
+
+	const sorted = [...families.values()].sort(compareFamilies)
+	const selected = optionValueToFontSetting(config.selected ?? '')
+	const options: FontFamilyOptionOrDivider[] = [
+		{ value: FOLLOW_DEFAULT_FONT, label: config.defaultLabel },
+	]
+
+	if (selected && !families.has(selected.toLowerCase()) && config.missingLabel) {
+		options.push({ value: selected, label: selected, subLabel: config.missingLabel })
+	}
+
+	if (config.groupMonospaced) {
+		const monospaced = sorted.filter((font) => font.monospaced)
+		const proportional = sorted.filter((font) => !font.monospaced)
+
+		options.push(...monospaced.map((font) => toOption(font, config.monospaceLabel)))
+
+		if (monospaced.length > 0 && proportional.length > 0) {
+			options.push({ type: 'divider' })
+		}
+
+		options.push(...proportional.map((font) => toOption(font, config.monospaceLabel)))
+
+		return options
+	}
+
+	options.push(...sorted.map((font) => toOption(font)))
+
+	return options
+}

apps/app-frontend/src/helpers/game-options.ts

@@ -0,0 +1,244 @@
+import { queryOptions } from '@tanstack/vue-query'
+import { invoke } from '@tauri-apps/api/core'
+
+export type GameOptionCanonicalValue =
+	| { type: 'bool'; value: boolean }
+	| { type: 'integer'; value: number }
+	| { type: 'decimal'; value: string }
+	| { type: 'enum'; value: string }
+	| { type: 'text'; value: string }
+	| { type: 'string_list'; value: string[] }
+	| { type: 'key_binding'; value: string }
+	| { type: 'external_raw'; value: string }
+
+export type GameOptionValueState = 'canonical' | 'uniform_local' | 'mixed' | 'unset' | 'invalid'
+
+export type GameOptionCompatibilityStatus =
+	| 'ready'
+	| 'deferred'
+	| 'waiting_for_file'
+	| 'waiting_for_base'
+	| 'not_available'
+	| 'unsupported_value'
+	| 'unmappable'
+	| 'catalog_uncovered'
+	| 'controlled'
+	| 'degraded'
+
+export type GameOptionMappingKind = 'direct' | 'legacy' | 'migrated' | 'lossless' | 'lossy'
+
+export type GameOptionCompatibilityReason =
+	| 'launcher_controlled'
+	| 'catalog_uncovered'
+	| 'inspection_failed'
+	| 'waiting_for_options_file'
+	| 'unsupported_value'
+	| 'migrates_on_write'
+	| 'waiting_for_compatible_base'
+	| 'missing_setting'
+
+export type GameOptionCompatibilityBucket = {
+	instance_count: number
+	write_keys: string[]
+	eventual_keys: string[]
+	game_versions: string[]
+	status: GameOptionCompatibilityStatus
+	mapping?: GameOptionMappingKind | null
+	reason?: GameOptionCompatibilityReason | null
+}
+
+export type GameOptionCompatibilitySummary = {
+	total_participating: number
+	will_receive: number
+	write_now: number
+	left_local: number
+	buckets: GameOptionCompatibilityBucket[]
+}
+
+export type GameOptionEditorChoice = {
+	value: string
+}
+
+export type GameOptionEditor = {
+	type:
+		| 'bool'
+		| 'integer'
+		| 'decimal'
+		| 'enum'
+		| 'text'
+		| 'string_list'
+		| 'key_binding'
+		| 'external_raw'
+	min?: number | null
+	max?: number | null
+	step?: number | null
+	unit?: string | null
+	choices?: GameOptionEditorChoice[]
+}
+
+export type GameSettingCategory = {
+	id: string
+	is_custom?: boolean
+}
+
+export type GameOptionValidationError =
+	'missing_value' | 'no_compatible_instances' | 'invalid_value' | 'changed_since_opened'
+
+export type EditableGameSetting = {
+	option_id: string
+	category_id: string
+	kind: 'vanilla' | 'external'
+	raw_key?: string | null
+	sync_enabled: boolean
+	canonical_value?: GameOptionCanonicalValue | null
+	value_state: GameOptionValueState
+	option_revision: number
+	editor: GameOptionEditor
+	compatibility: GameOptionCompatibilitySummary
+	validation_error?: GameOptionValidationError | null
+	controlled?: boolean
+}
+
+export type GameSettingsEditorState = {
+	summary_revision: string
+	canonical_revision: number
+	catalog_revision: number
+	total_participating: number
+	categories: GameSettingCategory[]
+	settings: EditableGameSetting[]
+}
+
+export type GameSettingChange = {
+	option_id: string
+	base_option_revision: number
+	sync_enabled?: boolean
+	canonical_value?: GameOptionCanonicalValue | null
+}
+
+export type UpdateGameSettingsRequest = {
+	expected_summary_revision: string
+	expected_canonical_revision: number
+	expected_catalog_revision: number
+	changes: GameSettingChange[]
+}
+
+export type GameOptionsSourceCandidate = {
+	source_id: string
+	instance_id: string
+	name: string
+	icon_path?: string | null
+	game_version?: string | null
+	eligible: boolean
+	disabled_reason?: GameOptionsSourceDisabledReason | null
+	recognized_setting_count: number
+	custom_setting_count: number
+}
+
+export type GameOptionsSourceDisabledReason =
+	| 'installing_or_updating'
+	| 'unsupported_version'
+	| 'missing_options_file'
+	| 'no_syncable_settings'
+	| 'unreadable_options_file'
+
+export type SaveGameSettingsResult = {
+	state?: GameSettingsEditorState
+	applied: number
+	migrated: number
+	deferred: number
+	unsupported: number
+	failed: number
+	conflicts?: string[]
+}
+
+export type GameSettingLocaleLabel = {
+	label: string
+	choices: Record<string, string>
+	source?: GameSettingSource | null
+}
+
+export type GameSettingSource = {
+	instance_id: string
+	file_name: string
+	file_path: string
+	project: {
+		id: string
+		title: string
+		icon_url: string | null
+	} | null
+}
+
+export async function get_game_setting_locale_labels(
+	instanceId: string | undefined,
+	locale: string,
+	optionIds: string[],
+	refreshSources = false,
+): Promise<{ settings: Record<string, GameSettingLocaleLabel> }> {
+	return await invoke('plugin:instance|instance_get_game_setting_locale_labels', {
+		instanceId,
+		locale,
+		optionIds,
+		refreshSources,
+	})
+}
+
+export async function list_game_options_sync_sources(): Promise<GameOptionsSourceCandidate[]> {
+	return await invoke('plugin:instance|instance_list_game_options_sync_sources')
+}
+
+export async function get_synced_game_options_config(): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_get_synced_game_options_config')
+}
+
+export const gameSettingsKeys = {
+	synced: ['game-settings', 'synced'] as const,
+	local: (instanceId: string) => ['game-settings', 'local', instanceId] as const,
+}
+
+export function gameSettingsQueryOptions(instanceId?: string) {
+	return queryOptions({
+		queryKey: instanceId ? gameSettingsKeys.local(instanceId) : gameSettingsKeys.synced,
+		queryFn: () =>
+			instanceId ? get_local_game_options_config(instanceId) : get_synced_game_options_config(),
+		staleTime: 30_000,
+		retry: false,
+	})
+}
+
+export async function preview_synced_game_option_changes(
+	request: UpdateGameSettingsRequest,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_preview_synced_game_option_changes', { request })
+}
+
+export async function save_synced_game_option_changes(
+	request: UpdateGameSettingsRequest,
+): Promise<SaveGameSettingsResult> {
+	return await invoke('plugin:instance|instance_save_synced_game_option_changes', { request })
+}
+
+export async function get_local_game_options_config(
+	instanceId: string,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_get_local_game_options_config', { instanceId })
+}
+
+export async function preview_local_game_option_changes(
+	instanceId: string,
+	request: UpdateGameSettingsRequest,
+): Promise<GameSettingsEditorState> {
+	return await invoke('plugin:instance|instance_preview_local_game_option_changes', {
+		instanceId,
+		request,
+	})
+}
+
+export async function save_local_game_option_changes(
+	instanceId: string,
+	request: UpdateGameSettingsRequest,
+): Promise<SaveGameSettingsResult> {
+	return await invoke('plugin:instance|instance_save_local_game_option_changes', {
+		instanceId,
+		request,
+	})
+}

apps/app-frontend/src/helpers/hosted-packs.ts

@@ -2,10 +2,13 @@ import { invoke } from '@tauri-apps/api/core'
 
 import {
 	requestSkinSiteDownloadToken,
+	requestSkinSitePlayers,
+	skinSitePlayers,
 	skinSiteStatus,
 	skinSiteUser,
 	waitForSkinSiteSession,
 } from '../composables/skin-site-session.ts'
+import { authenticateInstancePlayer } from './instance-player.ts'
 
 export const HOSTED_ACCOUNT_REQUIRED_MESSAGE = '您需要登录正版或皮肤站账号后才能操作'
 
@@ -24,10 +27,36 @@ function startHostedPackAttempt(instanceId: string) {
 }
 
 export async function requireHostedGameAccount(): Promise<void> {
-	const available = await invokeHosted<boolean>('plugin:install|hosted_has_game_account')
+	if (await invokeHosted<boolean>('plugin:install|hosted_has_game_account')) return
-	if (!available) {
+
-		throw new Error(HOSTED_ACCOUNT_REQUIRED_MESSAGE)
+	// No game credential yet, but a signed-in skin site already lists the
+	// user's players. Authenticate the first one automatically so the user
+	// does not have to pick a player manually before creating an instance.
+	await waitForSkinSiteSession()
+	if (skinSiteStatus.value === 'signed-in' && skinSiteUser.value) {
+		if (skinSitePlayers.value.length === 0) {
+			await requestSkinSitePlayers().catch(() => {})
+		}
+		const player =
+			skinSitePlayers.value.find((candidate) => !candidate.isMojang) ?? skinSitePlayers.value[0]
+		if (player) {
+			try {
+				await authenticateInstancePlayer({
+					id: player.uuid,
+					name: player.name,
+					account_type: 'yggdrasil',
+					skin_site_user: skinSiteUser.value.uuid,
+				})
+			} catch {
+				// Fall through to the login-required error below.
+			}
+			if (await invokeHosted<boolean>('plugin:install|hosted_has_game_account')) {
+				return
+			}
+		}
 	}
+
+	throw new Error(HOSTED_ACCOUNT_REQUIRED_MESSAGE)
 }
 
 export function clearHostedSession(): Promise<void> {

apps/app-frontend/src/helpers/instance-backup.test.ts

@@ -0,0 +1,38 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import { canonicalizeBackupExclusions, formatBackupExclusionPath } from './instance-backup.ts'
+
+test('directory exclusions display with a trailing slash', () => {
+	assert.equal(formatBackupExclusionPath({ path: 'caches', kind: 'directory' }), 'caches/')
+	assert.equal(
+		formatBackupExclusionPath({ path: 'config/somemod/bigdb.sqlite', kind: 'file' }),
+		'config/somemod/bigdb.sqlite',
+	)
+})
+
+test('directory exclusions cover descendants while file exclusions stay exact', () => {
+	assert.deepEqual(
+		canonicalizeBackupExclusions([
+			{ path: 'saves/world', kind: 'directory' },
+			{ path: 'config\\bigdb.sqlite', kind: 'file' },
+			{ path: 'saves', kind: 'directory' },
+			{ path: 'config', kind: 'file' },
+		]),
+		[
+			{ path: 'config', kind: 'file' },
+			{ path: 'saves', kind: 'directory' },
+			{ path: 'config/bigdb.sqlite', kind: 'file' },
+		],
+	)
+})
+
+test('directory wins when the same exclusion is selected as both kinds', () => {
+	assert.deepEqual(
+		canonicalizeBackupExclusions([
+			{ path: 'cache', kind: 'file' },
+			{ path: 'cache', kind: 'directory' },
+		]),
+		[{ path: 'cache', kind: 'directory' }],
+	)
+})

apps/app-frontend/src/helpers/instance-backup.ts

@@ -0,0 +1,237 @@
+import { invoke } from '@tauri-apps/api/core'
+import { listen, type UnlistenFn } from '@tauri-apps/api/event'
+
+export type InstanceBackupEligibility =
+	| 'eligible'
+	| 'not_installed'
+	| 'symlink_instance'
+	| 'direct_linked_instance'
+	| 'external_game_directory'
+	| 'root_missing'
+	| 'root_is_link'
+
+export interface BackupRepositoryStatus {
+	path: string
+	initialized: boolean
+	available: boolean
+	stored_size: number
+	logical_size: number
+	snapshot_count: number
+	error: string | null
+}
+
+export type BackupExclusionKind = 'file' | 'directory'
+
+export interface BackupExclusion {
+	path: string
+	kind: BackupExclusionKind
+}
+
+export function formatBackupExclusionPath(exclusion: BackupExclusion): string {
+	return exclusion.kind === 'directory' ? `${exclusion.path}/` : exclusion.path
+}
+
+export interface InstanceBackupConfig {
+	instance_id: string
+	enabled: boolean
+	eligibility: InstanceBackupEligibility
+	excluded_paths: BackupExclusion[]
+	snapshot_count: number
+}
+
+export interface BackupSnapshot {
+	id: string
+	instance_id: string
+	instance_name: string
+	created_at: number
+	file_count: number
+	symlink_count: number
+	logical_size: number
+	added_size: number
+}
+
+export interface BackupDeleteSummary {
+	snapshot_count: number
+	logical_size: number
+}
+
+export interface BackupRestorePreview {
+	added_files: number
+	modified_files: number
+	deleted_files: number
+	plan_token: string
+}
+
+export type BackupOperationType =
+	'create' | 'restore' | 'restore_preview' | 'delete' | 'repository_move'
+export type BackupOperationState =
+	| 'queued'
+	| 'scanning'
+	| 'hashing'
+	| 'saving'
+	| 'validating'
+	| 'materializing'
+	| 'applying'
+	| 'completed'
+	| 'cancelled'
+	| 'failed'
+	| 'interrupted'
+
+export interface BackupOperation {
+	id: string
+	operation_type: BackupOperationType
+	instance_id: string
+	snapshot_id?: string
+	state: BackupOperationState
+	processed_bytes: number
+	total_bytes: number
+	cancellable: boolean
+	cancel_requested: boolean
+	error?: string
+	created_at: number
+	updated_at: number
+	finished_at?: number
+	restore_preview?: BackupRestorePreview
+}
+
+export type BackupProgressStage =
+	| 'scanning'
+	| 'hashing'
+	| 'saving'
+	| 'validating'
+	| 'copying'
+	| 'restoring'
+	| 'deleting'
+	| 'completed'
+	| 'cancelled'
+	| 'failed'
+
+export type BackupOperationFinalState = 'completed' | 'cancelled' | 'failed'
+
+export interface BackupProgressEvent {
+	operationId: string
+	instanceId?: string
+	operationType: BackupOperationType
+	stage: BackupProgressStage
+	processedBytes: number
+	totalBytes: number
+	finalState?: BackupOperationFinalState
+	snapshotId?: string
+	message?: string
+}
+
+export function canonicalizeBackupExclusions(values: BackupExclusion[]): BackupExclusion[] {
+	const normalized = values
+		.map((value) => ({ ...value, path: value.path.replaceAll('\\', '/') }))
+		.sort(
+			(left, right) =>
+				left.path.split('/').length - right.path.split('/').length ||
+				left.path.localeCompare(right.path),
+		)
+	const result: BackupExclusion[] = []
+	for (const value of normalized) {
+		const duplicate = result.find((existing) => existing.path === value.path)
+		if (duplicate) {
+			if (value.kind === 'directory') duplicate.kind = 'directory'
+			continue
+		}
+		if (
+			result.some(
+				(parent) => parent.kind === 'directory' && value.path.startsWith(`${parent.path}/`),
+			)
+		) {
+			continue
+		}
+		result.push(value)
+	}
+	return result
+}
+
+export function getBackupRepositoryStatus(): Promise<BackupRepositoryStatus> {
+	return invoke('plugin:instance|instance_get_backup_repository_status')
+}
+
+export function moveBackupRepository(destination: string): Promise<string> {
+	return invoke('plugin:instance|instance_move_backup_repository', { destination })
+}
+
+export function getBackupConfig(instanceId: string): Promise<InstanceBackupConfig> {
+	return invoke('plugin:instance|instance_get_backup_config', { instanceId })
+}
+
+export function normalizeBackupExclusion(
+	instanceId: string,
+	selectedPath: string,
+	kind: BackupExclusionKind,
+): Promise<BackupExclusion> {
+	return invoke('plugin:instance|instance_normalize_backup_exclusion', {
+		instanceId,
+		selectedPath,
+		kind,
+	})
+}
+
+export function enableBackups(
+	instanceId: string,
+	excludedPaths: BackupExclusion[],
+): Promise<InstanceBackupConfig> {
+	return invoke('plugin:instance|instance_enable_backups', { instanceId, excludedPaths })
+}
+
+export function updateBackupExclusions(
+	instanceId: string,
+	excludedPaths: BackupExclusion[],
+): Promise<InstanceBackupConfig> {
+	return invoke('plugin:instance|instance_update_backup_exclusions', {
+		instanceId,
+		excludedPaths,
+	})
+}
+
+export function disableBackups(instanceId: string): Promise<void> {
+	return invoke('plugin:instance|instance_disable_backups', { instanceId })
+}
+
+export function startBackup(instanceId: string): Promise<string> {
+	return invoke('plugin:instance|instance_start_backup', { instanceId })
+}
+
+export function cancelBackup(operationId: string): Promise<boolean> {
+	return invoke('plugin:instance|instance_cancel_backup', { operationId })
+}
+
+export function listBackupOperations(
+	instanceId?: string,
+	activeOnly = false,
+): Promise<BackupOperation[]> {
+	return invoke('plugin:instance|instance_list_backup_operations', {
+		instanceId,
+		activeOnly,
+	})
+}
+
+export function listBackups(instanceId: string): Promise<BackupSnapshot[]> {
+	return invoke('plugin:instance|instance_list_backups', { instanceId })
+}
+
+export function deleteBackup(snapshotId: string): Promise<void> {
+	return invoke('plugin:instance|instance_delete_backup', { snapshotId })
+}
+
+export function startBackupRestorePreview(snapshotId: string): Promise<string> {
+	return invoke('plugin:instance|instance_get_backup_restore_preview', { snapshotId })
+}
+
+export function restoreBackup(snapshotId: string, planToken: string): Promise<string> {
+	return invoke('plugin:instance|instance_restore_backup', { snapshotId, planToken })
+}
+
+export function getBackupDeleteSummary(instanceId: string): Promise<BackupDeleteSummary> {
+	return invoke('plugin:instance|instance_get_backup_delete_summary', { instanceId })
+}
+
+export function listenBackupProgress(
+	handler: (event: BackupProgressEvent) => void,
+): Promise<UnlistenFn> {
+	return listen<BackupProgressEvent>('instance_backup_progress', (event) => handler(event.payload))
+}

apps/app-frontend/src/helpers/instance.ts

@@ -108,6 +108,104 @@ export async function get_many(instanceIds: string[]): Promise<GameInstance[]> {
 	return await invoke('plugin:instance|instance_get_many', { instanceIds })
 }
 
+export function adaptContentItems(items: ContentItem[]): ContentItem[] {
+	return items.map((item) => {
+		const embeddedMetadata = item.embedded_metadata
+		if (!embeddedMetadata?.icon_path) return item
+		return {
+			...item,
+			embedded_metadata: {
+				...embeddedMetadata,
+				icon_url: convertFileSrc(embeddedMetadata.icon_path),
+			},
+		}
+	})
+}
+
+export type SyncedOption =
+	| 'game_options'
+	| 'command_history'
+	| 'multiplayer_servers'
+	| 'creative_hotbars'
+	| 'screenshots'
+	| 'resource_packs'
+	| 'data_packs'
+export type GlobalSyncedOptions = Record<SyncedOption, boolean>
+export type SyncedOptionCapability = {
+	option: SyncedOption
+	supported: boolean
+	disabled_reason: string | null
+}
+export type SyncedOptionJoinPreview = { action: string }
+export type SyncedOptionsOverview = {
+	global_options: GlobalSyncedOptions
+	capabilities: SyncedOptionCapability[]
+}
+export async function get_global_synced_options(): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_get_synced_options')
+}
+export async function get_initialized_synced_options(): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_get_initialized_synced_options')
+}
+/**
+ * Every synced option is currently available on every instance. The parameter
+ * stays so callers keep passing the option they are asking about, which is what
+ * a real implementation will need.
+ */
+export function isSyncedOptionAvailable(_option: SyncedOption): boolean {
+	return true
+}
+export async function set_global_synced_option(
+	option: SyncedOption,
+	enabled: boolean,
+	baseInstanceId?: string | null,
+): Promise<GlobalSyncedOptions> {
+	return await invoke('plugin:instance|instance_set_synced_option', {
+		option,
+		enabled,
+		baseInstanceId,
+	})
+}
+export async function set_instance_synced_option(
+	instanceId: string,
+	option: SyncedOption,
+	enabled: boolean,
+	resolution?: string | null,
+): Promise<GameInstance> {
+	return await invoke('plugin:instance|instance_set_instance_synced_option', {
+		instanceId,
+		option,
+		enabled,
+		resolution,
+	})
+}
+export async function get_synced_options_overview(
+	instanceId: string,
+): Promise<SyncedOptionsOverview> {
+	return await invoke('plugin:instance|instance_get_synced_options_overview', { instanceId })
+}
+export async function get_command_history(): Promise<string> {
+	return await invoke('plugin:instance|instance_get_synced_command_history')
+}
+export async function set_command_history(contents: string): Promise<string> {
+	return await invoke('plugin:instance|instance_set_synced_command_history', { contents })
+}
+export type SyncedServer = {
+	id: string
+	name: string
+	address: string
+	accept_textures: boolean | null
+}
+export async function list_synced_servers(): Promise<SyncedServer[]> {
+	return await invoke('plugin:instance|instance_list_synced_servers')
+}
+export async function update_synced_server(server: SyncedServer): Promise<void> {
+	await invoke('plugin:instance|instance_update_synced_server', { server })
+}
+export async function remove_synced_server(id: string): Promise<void> {
+	await invoke('plugin:instance|instance_remove_synced_server', { id })
+}
+
 export async function get_projects(
 	instanceId: string,
 	cacheBehaviour?: CacheBehaviour,

apps/app-frontend/src/helpers/settings.ts

@@ -151,6 +151,7 @@ export type AppSettings = {
 	curseforge_source: DownloadSourceMode
 	bypass_curseforge_download_restrictions: boolean
 	mojang_auth_source: DownloadSourceMode
+	ignore_ssl_errors: boolean
 
 	theme: ColorTheme
 	accent_color: AccentColorSetting
@@ -173,6 +174,8 @@ export type AppSettings = {
 	minimal_home_instance_id: string | null
 	close_behavior: 'ask' | 'close' | 'lightweight'
 	ui_scale: number
+	ui_font: string | null
+	mono_font: string | null
 	home_widgets: HomeDashboardConfig | null
 	terracotta_public_nodes: string[]
 
@@ -215,6 +218,8 @@ type LegacyMirrorSettings = {
 function normalizeDownloadSettings(settings: AppSettings & LegacyMirrorSettings): AppSettings {
 	settings.close_behavior ??= 'ask'
 	settings.ui_scale ??= 100
+	settings.ui_font ??= null
+	settings.mono_font ??= null
 	const hasLegacySettings =
 		typeof settings.use_minecraft_mirror === 'boolean' &&
 		typeof settings.use_modrinth_mirror === 'boolean' &&
@@ -241,6 +246,7 @@ function normalizeDownloadSettings(settings: AppSettings & LegacyMirrorSettings)
 		usesLegacyDefaults || !hasLegacySettings ? 'auto' : legacySource(settings.use_curseforge_mirror)
 	settings.bypass_curseforge_download_restrictions ??= true
 	settings.mojang_auth_source ??= 'auto'
+	settings.ignore_ssl_errors ??= false
 	settings.terracotta_public_nodes ??= ['wss://center.node.1tmc.top']
 	settings.feature_flags ??= { ...DEFAULT_FEATURE_FLAGS }
 	for (const [key, value] of Object.entries(DEFAULT_FEATURE_FLAGS)) {

apps/app-frontend/src/helpers/synced-options.ts

@@ -0,0 +1,61 @@
+import { queryOptions } from '@tanstack/vue-query'
+
+import { list_game_options_sync_sources } from './game-options'
+import {
+	get_command_history,
+	get_global_synced_options,
+	get_initialized_synced_options,
+	list_synced_servers,
+} from './instance'
+import type { GameInstance } from './types'
+
+export const syncedOptionsKeys = {
+	global: ['global-synced-options'] as const,
+	initialized: ['initialized-synced-options'] as const,
+	gameSources: ['game-options-sync-sources'] as const,
+	set: ['global-synced-options', 'set'] as const,
+	servers: ['synced-servers', 'list'] as const,
+	commandHistory: ['synced-options', 'command-history'] as const,
+}
+
+export function globalSyncedOptionsQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.global,
+		queryFn: get_global_synced_options,
+	})
+}
+
+export function initializedSyncedOptionsQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.initialized,
+		queryFn: get_initialized_synced_options,
+	})
+}
+
+export function gameOptionsSyncSourcesQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.gameSources,
+		queryFn: list_game_options_sync_sources,
+		staleTime: 0,
+	})
+}
+
+export function syncedServersQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.servers,
+		queryFn: list_synced_servers,
+	})
+}
+
+export function commandHistoryQueryOptions() {
+	return queryOptions({
+		queryKey: syncedOptionsKeys.commandHistory,
+		queryFn: get_command_history,
+	})
+}
+
+export function canSourceMultiplayerServers(instance: GameInstance): boolean {
+	return !['server_project', 'server_project_modpack', 'modrinth_hosting'].includes(
+		instance.link?.type ?? '',
+	)
+}

apps/app-frontend/src/helpers/synced-packs.ts

@@ -0,0 +1,83 @@
+import type { ContentItem } from '@modrinth/ui'
+import { queryOptions } from '@tanstack/vue-query'
+import { invoke } from '@tauri-apps/api/core'
+
+import { adaptContentItems, isSyncedOptionAvailable } from './instance'
+
+export type SyncedPackType = 'resourcepack' | 'datapack'
+export type SyncedPackAction = 'enable' | 'disable'
+
+export type DesyncServerMode = 'keep_in_other_instances' | 'remove_from_other_instances'
+
+export function isSyncedPackTypeAvailable(projectType: ContentItem['project_type']): boolean {
+	return (
+		['resourcepack', 'datapack'].includes(projectType) &&
+		isSyncedOptionAvailable(projectType === 'resourcepack' ? 'resource_packs' : 'data_packs')
+	)
+}
+
+export interface PackSyncPreview {
+	pack: ContentItem
+	instances: {
+		instance_id: string
+		name: string
+		game_version: string
+		compatible: boolean
+		participating: boolean
+	}[]
+}
+
+export const syncedPackKeys = {
+	all: ['synced-packs'] as const,
+	list: (type: SyncedPackType) => ['synced-packs', 'list', type] as const,
+}
+
+export function syncedPackQueryOptions(type: SyncedPackType) {
+	return queryOptions({
+		queryKey: syncedPackKeys.list(type),
+		queryFn: () => list_synced_packs(type),
+		enabled: isSyncedPackTypeAvailable(type),
+	})
+}
+
+export async function list_synced_packs(projectType: SyncedPackType): Promise<ContentItem[]> {
+	const items = await invoke<ContentItem[]>('plugin:instance|instance_list_synced_packs', {
+		projectType,
+	})
+	return adaptContentItems(items).map((item) => ({ ...item, external: !item.project }))
+}
+
+export function get_pack_sync_preview(
+	instanceId: string,
+	projectPath: string,
+): Promise<PackSyncPreview> {
+	return invoke('plugin:instance|instance_get_pack_sync_preview', { instanceId, projectPath })
+}
+
+export function sync_pack(instanceId: string, projectPath: string): Promise<void> {
+	return invoke('plugin:instance|instance_sync_pack', { instanceId, projectPath })
+}
+
+export function desync_pack(
+	instanceId: string,
+	packId: string,
+	mode: DesyncServerMode,
+): Promise<void> {
+	return invoke('plugin:instance|instance_desync_pack', { instanceId, packId, mode })
+}
+
+export function upload_synced_pack(
+	path: string,
+	projectType: SyncedPackType,
+	gameVersions: string[],
+): Promise<void> {
+	return invoke('plugin:instance|instance_upload_synced_pack', { path, projectType, gameVersions })
+}
+
+export function set_synced_pack_enabled(packId: string, enabled: boolean): Promise<void> {
+	return invoke('plugin:instance|instance_set_synced_pack_enabled', { packId, enabled })
+}
+
+export function remove_synced_pack(packId: string): Promise<void> {
+	return invoke('plugin:instance|instance_remove_synced_pack', { packId })
+}

apps/app-frontend/src/helpers/system-fonts.ts

@@ -0,0 +1,19 @@
+import { invoke } from '@tauri-apps/api/core'
+
+import type { SystemFontFamily } from './font-family.ts'
+
+let cached: Promise<SystemFontFamily[]> | null = null
+
+/**
+ * Installed families are enumerated by the host once per session; installing a
+ * font while the launcher runs shows up after a restart.
+ */
+export function getSystemFontFamilies(): Promise<SystemFontFamily[]> {
+	cached ??= invoke<SystemFontFamily[]>('plugin:fonts|fonts_get_system_fonts').catch((error) => {
+		// A failed scan must not poison the session for a later retry.
+		cached = null
+		throw error
+	})
+
+	return cached
+}

apps/app-frontend/src/helpers/types.d.ts

@@ -23,6 +23,17 @@ export type GameInstance = {
 	loader_version?: string
 	loader_components: LoaderComponent[]
 
+	synced_options: Record<
+		| 'game_options'
+		| 'command_history'
+		| 'multiplayer_servers'
+		| 'creative_hotbars'
+		| 'screenshots'
+		| 'resource_packs'
+		| 'data_packs',
+		boolean
+	>
+
 	groups: string[]
 
 	link?: InstanceLink | null

apps/app-frontend/src/locales/zh-CN/index.json

@@ -640,6 +640,57 @@
   "app.appearance-settings.auto-hide-downloads-button.description": {
     "message": "没有进行中的下载任务时隐藏侧边栏中的下载按钮，有任务时自动显示。"
   },
+  "app.appearance-settings.fonts.title": {
+    "message": "字体"
+  },
+  "app.appearance-settings.fonts.description": {
+    "message": "选择启动器界面与日志使用的字体。"
+  },
+  "app.appearance-settings.fonts.ui-font": {
+    "message": "界面字体"
+  },
+  "app.appearance-settings.fonts.ui-font-description": {
+    "message": "应用于启动器界面。仅列出系统已安装的字体。"
+  },
+  "app.appearance-settings.fonts.mono-font": {
+    "message": "等宽字体"
+  },
+  "app.appearance-settings.fonts.mono-font-description": {
+    "message": "用于日志、服务器控制台等等宽内容。"
+  },
+  "app.appearance-settings.fonts.default": {
+    "message": "启动器默认"
+  },
+  "app.appearance-settings.fonts.monospace": {
+    "message": "等宽"
+  },
+  "app.appearance-settings.fonts.missing": {
+    "message": "未安装"
+  },
+  "app.appearance-settings.fonts.search-placeholder": {
+    "message": "搜索已安装的字体"
+  },
+  "app.appearance-settings.fonts.no-results": {
+    "message": "没有匹配的字体"
+  },
+  "app.appearance-settings.fonts.load-failed": {
+    "message": "无法读取已安装的字体列表。"
+  },
+  "app.appearance-settings.fonts.retry": {
+    "message": "重试"
+  },
+  "app.appearance-settings.fonts.reset": {
+    "message": "重置"
+  },
+  "app.appearance-settings.fonts.preview": {
+    "message": "预览"
+  },
+  "app.appearance-settings.fonts.ui-preview-sample": {
+    "message": "永和九年，岁在癸丑，暮春之初。"
+  },
+  "app.appearance-settings.fonts.mono-preview-sample": {
+    "message": "const x = () => 0; // 等宽"
+  },
   "app.appearance-settings.auto-hide-downloads-button.title": {
     "message": "自动隐藏下载按钮"
   },
@@ -5995,6 +6046,30 @@
   "app.onboarding.instance-actions.title": {
     "message": "主操作台"
   },
+  "app.onboarding.instance-content-tab.title": {
+    "message": "内容"
+  },
+  "app.onboarding.instance-content-tab.description": {
+    "message": "在这里管理实例的 Mod、资源包与光影。可搜索、启用或禁用条目、检查更新，也能继续浏览安装新内容。"
+  },
+  "app.onboarding.instance-files-tab.title": {
+    "message": "文件"
+  },
+  "app.onboarding.instance-files-tab.description": {
+    "message": "浏览实例目录，用内置编辑器直接打开配置文件或日志，无需离开启动器。"
+  },
+  "app.onboarding.instance-worlds-tab.title": {
+    "message": "世界"
+  },
+  "app.onboarding.instance-worlds-tab.description": {
+    "message": "管理存档世界：备份、重命名、编辑世界设置，或打开世界所在文件夹。"
+  },
+  "app.onboarding.instance-logs-tab.title": {
+    "message": "日志"
+  },
+  "app.onboarding.instance-logs-tab.description": {
+    "message": "查看实例的实时日志，排查崩溃与报错，不必再翻找文件。"
+  },
   "app.onboarding.instance-tabs.description": {
     "message": "内容、文件、截图、世界和日志都在这些标签里。乱中有序。"
   },
@@ -7195,6 +7270,12 @@
   "app.settings.resources.curseforge-restriction-bypass-description": {
     "message": "当 CurseForge 不提供下载地址时，根据文件信息推导其 CDN 地址并尝试自动下载。关闭后将使用手动下载流程。"
   },
+  "app.settings.resources.ignore-ssl-errors": {
+    "message": "忽略 SSL 证书错误"
+  },
+  "app.settings.resources.ignore-ssl-errors-description": {
+    "message": "跳过启动器网络请求的 TLS 证书校验。仅当你信任当前网络并了解其安全风险时才启用。"
+  },
   "app.settings.resources.database-backups": {
     "message": "应用数据库备份"
   },
@@ -10680,5 +10761,595 @@
   },
   "app.starlight-skin.frame-title": {
     "message": "StarLight 皮肤站"
-  }
+  },
+  "app.navigation.screenshots": {
+    "message": "截图"
+  },
+  "instance.backups.added-size": {
+    "message": "新增存储 {size}"
+  },
+  "instance.backups.all-included": {
+    "message": "实例中的所有文件和文件夹都会纳入备份。"
+  },
+  "instance.backups.backup-now": {
+    "message": "立即备份"
+  },
+  "instance.backups.cancel": {
+    "message": "取消备份"
+  },
+  "instance.backups.choose": {
+    "message": "默认备份实例中的全部内容，请添加不需要备份的文件或文件夹。"
+  },
+  "instance.backups.delete": {
+    "message": "删除备份"
+  },
+  "instance.backups.delete-body": {
+    "message": "此快照将被永久删除，不再使用的仓库文件也会一并清理。"
+  },
+  "instance.backups.delete-title": {
+    "message": "删除此备份？"
+  },
+  "instance.backups.description": {
+    "message": "在实例关闭时，为整个实例创建去重快照。"
+  },
+  "instance.backups.disable": {
+    "message": "关闭备份"
+  },
+  "instance.backups.disable-blocked": {
+    "message": "必须先删除全部快照才能关闭备份。"
+  },
+  "instance.backups.edit-exclusions": {
+    "message": "编辑排除项"
+  },
+  "instance.backups.empty": {
+    "message": "尚未创建任何备份。"
+  },
+  "instance.backups.enable": {
+    "message": "启用备份"
+  },
+  "instance.backups.excluded-paths": {
+    "message": "不备份：{paths}"
+  },
+  "instance.backups.exclusions.add-file": {
+    "message": "添加忽略文件"
+  },
+  "instance.backups.exclusions.add-folder": {
+    "message": "添加忽略文件夹"
+  },
+  "instance.backups.exclusions.empty": {
+    "message": "没有忽略任何文件或文件夹。"
+  },
+  "instance.backups.exclusions.remove": {
+    "message": "从排除项中移除 {path}"
+  },
+  "instance.backups.loading": {
+    "message": "正在加载备份设置……"
+  },
+  "instance.backups.progress-bytes": {
+    "message": "已处理 {processed}，共 {total}"
+  },
+  "instance.backups.restore": {
+    "message": "恢复备份"
+  },
+  "instance.backups.restore-body": {
+    "message": "即将进行的操作：新增 {added} 个文件，修改 {modified} 个文件，删除 {deleted} 个文件。是否继续？"
+  },
+  "instance.backups.restore-title": {
+    "message": "恢复此备份？"
+  },
+  "instance.backups.save-exclusions": {
+    "message": "保存排除项"
+  },
+  "instance.backups.snapshot-meta": {
+    "message": "{files, plural, other {# 个文件}} · {size}"
+  },
+  "instance.backups.snapshots": {
+    "message": "快照"
+  },
+  "instance.backups.stage.applying": {
+    "message": "正在应用变更文件"
+  },
+  "instance.backups.stage.failed": {
+    "message": "备份失败"
+  },
+  "instance.backups.stage.hashing": {
+    "message": "正在计算文件哈希"
+  },
+  "instance.backups.stage.interrupted": {
+    "message": "备份任务已中断"
+  },
+  "instance.backups.stage.materializing": {
+    "message": "正在准备变更文件"
+  },
+  "instance.backups.stage.preview": {
+    "message": "正在分析恢复变更"
+  },
+  "instance.backups.stage.queued": {
+    "message": "等待开始"
+  },
+  "instance.backups.stage.saving": {
+    "message": "正在保存快照索引"
+  },
+  "instance.backups.stage.scanning": {
+    "message": "正在扫描文件"
+  },
+  "instance.backups.stage.validating": {
+    "message": "正在验证恢复任务"
+  },
+  "instance.backups.title": {
+    "message": "实例备份"
+  },
+  "instance.backups.unavailable": {
+    "message": "备份不可用"
+  },
+  "instance.backups.unavailable.direct-linked": {
+    "message": "不支持备份直接关联到其他启动器的实例。"
+  },
+  "instance.backups.unavailable.external-directory": {
+    "message": "不支持备份使用外部游戏目录的实例。"
+  },
+  "instance.backups.unavailable.not-installed": {
+    "message": "请先完成实例安装，再启用备份。"
+  },
+  "instance.backups.unavailable.root-link": {
+    "message": "不支持备份根文件夹为链接的实例。"
+  },
+  "instance.backups.unavailable.root-missing": {
+    "message": "实例文件夹不存在。"
+  },
+  "instance.backups.unavailable.symlink": {
+    "message": "不支持备份以符号链接导入的实例。"
+  },
+  "settings.backups.repository.change": {
+    "message": "更改文件夹"
+  },
+  "settings.backups.repository.description": {
+    "message": "存放去重后的实例备份数据及其独立索引数据库。"
+  },
+  "settings.backups.repository.location": {
+    "message": "位置"
+  },
+  "settings.backups.repository.location-description": {
+    "message": "更改位置会移动完整仓库。请选择新的或空的文件夹。"
+  },
+  "settings.backups.repository.moving": {
+    "message": "正在移动仓库……"
+  },
+  "settings.backups.repository.moving-progress": {
+    "message": "正在移动备份仓库：已处理 {processed}，共 {total}"
+  },
+  "settings.backups.repository.title": {
+    "message": "备份文件仓库"
+  },
+  "settings.backups.repository.unavailable": {
+    "message": "仓库不可用"
+  },
+  "settings.backups.repository.usage": {
+    "message": "存储占用"
+  },
+  "settings.backups.repository.usage-description": {
+    "message": "实际存储 {stored}，对应 {logical} 的备份数据，共 {count, plural, other {# 个快照}}。"
+  },
+	"app.settings.synced-options.choose-sync-source.command-history-description": { "message": "选择要从哪个实例复制命令历史记录。这些记录仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.command-history-title": { "message": "选择命令历史记录来源" },
+	"app.settings.synced-options.choose-sync-source.creative-hotbars-description": { "message": "选择要从哪个实例复制保存的创造模式快捷栏。这些快捷栏仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.creative-hotbars-title": { "message": "选择创造模式快捷栏来源" },
+	"app.settings.synced-options.choose-sync-source.data-packs-title": { "message": "选择数据包来源" },
+	"app.settings.synced-options.choose-sync-source.game-settings-description": { "message": "选择要从哪个实例复制游戏设置。这些设置仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.game-settings-title": { "message": "选择游戏设置来源" },
+	"app.settings.synced-options.choose-sync-source.ineligible": { "message": "无法选择此实例作为同步来源" },
+	"app.settings.synced-options.choose-sync-source.load-error": { "message": "无法加载同步来源，请重试。" },
+	"app.settings.synced-options.choose-sync-source.multiplayer-servers-description": { "message": "选择要从哪个实例复制多人服务器列表。这些服务器仅用于初始同步，之后可从任意实例编辑。" },
+	"app.settings.synced-options.choose-sync-source.multiplayer-servers-title": { "message": "选择多人服务器来源" },
+	"app.settings.synced-options.choose-sync-source.no-instances-found": { "message": "没有找到实例" },
+	"app.settings.synced-options.choose-sync-source.resource-packs-title": { "message": "选择资源包来源" },
+	"app.settings.synced-options.choose-sync-source.retry": { "message": "重试" },
+	"app.settings.synced-options.choose-sync-source.search-placeholder": { "message": "搜索实例" },
+	"app.settings.synced-options.choose-sync-source.sync": { "message": "同步" },
+	"app.settings.synced-options.command-history": { "message": "同步命令记录" },
+	"app.settings.synced-options.command-history.description": { "message": "在不同的实例之间同步命令记录。" },
+	"app.settings.synced-options.command-history.editor-title": { "message": "编辑指令历史记录" },
+	"app.settings.synced-options.creative-hotbars": { "message": "同步保存的创造模式物品栏" },
+	"app.settings.synced-options.creative-hotbars.description": { "message": "在不同的实例之间同步创造模式物品栏。" },
+	"app.settings.synced-options.data-packs": { "message": "同步数据包" },
+	"app.settings.synced-options.data-packs.description": { "message": "在所有实例间使用相同的数据包" },
+	"app.settings.synced-options.data-packs.none-synced-yet": { "message": "尚未同步任何数据包" },
+	"app.settings.synced-options.edit.no-instances": { "message": "请先添加实例，再编辑同步数据。" },
+	"app.settings.synced-options.edit.no-synced-data": { "message": "请先选择同步来源，再编辑此设置。" },
+	"app.settings.synced-options.game-settings": { "message": "同步游戏设置" },
+	"app.settings.synced-options.game-settings.button": { "message": "编辑游戏设置" },
+	"app.settings.synced-options.game-settings.description": { "message": "在所有实例间使用相同的游戏设置。" },
+	"app.settings.synced-options.game-settings.disabled-tooltip": { "message": "请先启用游戏设置同步，再选择单个设置。" },
+	"app.settings.synced-options.game-settings.no-options-to-edit": { "message": "目前没有可编辑的设置" },
+	"app.settings.synced-options.multiplayer-servers": { "message": "同步多人模式服务器列表" },
+	"app.settings.synced-options.multiplayer-servers.address": { "message": "服务器地址" },
+	"app.settings.synced-options.multiplayer-servers.copy-address": { "message": "复制地址" },
+	"app.settings.synced-options.multiplayer-servers.count": { "message": "{count, number} 个服务器" },
+	"app.settings.synced-options.multiplayer-servers.description": { "message": "在不同的实例直接同步多人模式服务器列表。" },
+	"app.settings.synced-options.multiplayer-servers.editor-title": { "message": "编辑同步的服务器" },
+	"app.settings.synced-options.multiplayer-servers.empty": { "message": "当前未同步任何用户添加的服务器。" },
+	"app.settings.synced-options.multiplayer-servers.filter-offline": { "message": "离线" },
+	"app.settings.synced-options.multiplayer-servers.filter-online": { "message": "在线" },
+	"app.settings.synced-options.multiplayer-servers.more-options": { "message": "更多服务器选项" },
+	"app.settings.synced-options.multiplayer-servers.name": { "message": "服务器名称" },
+	"app.settings.synced-options.multiplayer-servers.no-results": { "message": "没有匹配搜索或筛选条件的已同步服务器。" },
+	"app.settings.synced-options.multiplayer-servers.none-synced-yet": { "message": "暂无已同步的服务器" },
+	"app.settings.synced-options.multiplayer-servers.players-online": { "message": "{count, number} 人在线" },
+	"app.settings.synced-options.multiplayer-servers.search": { "message": "搜索 {count, number} 个已同步服务器……" },
+	"app.settings.synced-options.multiplayer-servers.status": { "message": "状态" },
+	"app.settings.synced-options.packs.disabled": { "message": "请先启用同步，再编辑共享包。" },
+	"app.settings.synced-options.resource-packs": { "message": "同步资源包" },
+	"app.settings.synced-options.resource-packs.description": { "message": "在所有实例间使用相同的资源包" },
+	"app.settings.synced-options.resource-packs.none-synced-yet": { "message": "尚未同步任何资源包" },
+	"app.settings.synced-options.title": { "message": "跨所有实例同步的选项" },
+	"app.settings.synced-packs.data-packs": { "message": "数据包" },
+	"app.settings.synced-packs.disable": { "message": "禁用" },
+	"app.settings.synced-packs.empty": { "message": "没有已同步的包" },
+	"app.settings.synced-packs.enable": { "message": "启用" },
+	"app.settings.synced-packs.remove": { "message": "移除" },
+	"app.settings.synced-packs.resource-packs": { "message": "资源包" },
+	"app.sync-instances-update.choose-source.data-packs": { "message": "选择要从哪个实例复制数据包。这些包仅用于初始化同步，之后可从任意实例进行编辑。" },
+	"app.sync-instances-update.choose-source.resource-packs": { "message": "选择要从哪个实例复制资源包。这些包仅用于初始化同步，之后可从任意实例进行编辑。" },
+	"instance.settings.tabs.backups": { "message": "备份" },
+	"instance.settings.tabs.sync": { "message": "同步" },
+	"app.settings.game-options.category.accessibility.description": { "message": "无障碍设置" },
+	"app.settings.game-options.category.accessibility.label": { "message": "无障碍" },
+	"app.settings.game-options.category.chat.description": { "message": "聊天显示与外观" },
+	"app.settings.game-options.category.chat.label": { "message": "聊天" },
+	"app.settings.game-options.category.controls.description": { "message": "鼠标、移动与按键绑定" },
+	"app.settings.game-options.category.controls.label": { "message": "控制" },
+	"app.settings.game-options.category.custom.description": { "message": "由模组添加的设置" },
+	"app.settings.game-options.category.custom.label": { "message": "自定义设置" },
+	"app.settings.game-options.category.language.description": { "message": "游戏语言" },
+	"app.settings.game-options.category.language.label": { "message": "语言" },
+	"app.settings.game-options.category.music-and-sound.description": { "message": "音量与音频偏好" },
+	"app.settings.game-options.category.music-and-sound.label": { "message": "音乐和声音" },
+	"app.settings.game-options.category.online.description": { "message": "在线与 Realms 偏好" },
+	"app.settings.game-options.category.online.label": { "message": "在线" },
+	"app.settings.game-options.category.skin-customization.description": { "message": "皮肤层与主手" },
+	"app.settings.game-options.category.skin-customization.label": { "message": "皮肤自定义" },
+	"app.settings.game-options.category.video.description": { "message": "镜头与显示设置" },
+	"app.settings.game-options.category.video.label": { "message": "视频" },
+	"app.settings.game-options.choice.all": { "message": "全部" },
+	"app.settings.game-options.choice.balanced": { "message": "平衡" },
+	"app.settings.game-options.choice.by-player": { "message": "按玩家" },
+	"app.settings.game-options.choice.chat": { "message": "聊天" },
+	"app.settings.game-options.choice.commands-only": { "message": "仅命令" },
+	"app.settings.game-options.choice.constant": { "message": "持续" },
+	"app.settings.game-options.choice.crosshair": { "message": "准星" },
+	"app.settings.game-options.choice.custom": { "message": "自定义" },
+	"app.settings.game-options.choice.decreased": { "message": "降低" },
+	"app.settings.game-options.choice.default": { "message": "默认" },
+	"app.settings.game-options.choice.fabulous": { "message": "极佳" },
+	"app.settings.game-options.choice.fancy": { "message": "精美" },
+	"app.settings.game-options.choice.far": { "message": "远" },
+	"app.settings.game-options.choice.fast": { "message": "快速" },
+	"app.settings.game-options.choice.frequent": { "message": "频繁" },
+	"app.settings.game-options.choice.hidden": { "message": "隐藏" },
+	"app.settings.game-options.choice.hotbar": { "message": "快捷栏" },
+	"app.settings.game-options.choice.left": { "message": "左" },
+	"app.settings.game-options.choice.limited": { "message": "有限" },
+	"app.settings.game-options.choice.max-fps": { "message": "最高 FPS" },
+	"app.settings.game-options.choice.maximum": { "message": "最大" },
+	"app.settings.game-options.choice.minimal": { "message": "最少" },
+	"app.settings.game-options.choice.minimum": { "message": "最小" },
+	"app.settings.game-options.choice.nearby": { "message": "附近" },
+	"app.settings.game-options.choice.never": { "message": "从不" },
+	"app.settings.game-options.choice.none": { "message": "无" },
+	"app.settings.game-options.choice.normal": { "message": "正常" },
+	"app.settings.game-options.choice.off": { "message": "关闭" },
+	"app.settings.game-options.choice.on": { "message": "开启" },
+	"app.settings.game-options.choice.opengl": { "message": "OpenGL 渲染器" },
+	"app.settings.game-options.choice.pause": { "message": "暂停菜单" },
+	"app.settings.game-options.choice.pause-and-toast": { "message": "暂停菜单和提示" },
+	"app.settings.game-options.choice.power-saver": { "message": "省电" },
+	"app.settings.game-options.choice.right": { "message": "右" },
+	"app.settings.game-options.choice.short": { "message": "短" },
+	"app.settings.game-options.choice.shown": { "message": "显示" },
+	"app.settings.game-options.choice.system": { "message": "系统" },
+	"app.settings.game-options.choice.tiny": { "message": "极小" },
+	"app.settings.game-options.choice.vulkan": { "message": "Vulkan 渲染器" },
+	"app.settings.game-options.choice.when-minimized": { "message": "最小化时" },
+	"app.settings.game-options.choice.while-afk": { "message": "挂机时" },
+	"app.settings.game-options.compatibility.none": { "message": "部分实例无法使用此设置" },
+	"app.settings.game-options.compatibility.reason.launcher-controlled": { "message": "此设置由启动器设置管理" },
+	"app.settings.game-options.custom-value.placeholder": { "message": "输入值" },
+	"app.settings.game-options.keybind.assigned-status": { "message": "已将 {setting} 绑定为 {binding}。" },
+	"app.settings.game-options.keybind.cancelled-status": { "message": "已取消按键绑定更改。" },
+	"app.settings.game-options.keybind.change": { "message": "{setting}：{binding}。激活以更改绑定。" },
+	"app.settings.game-options.keybind.choose": { "message": "选择按键" },
+	"app.settings.game-options.keybind.conflict-description": { "message": "{settings} 已使用此按键。" },
+	"app.settings.game-options.keybind.key.arrow-down": { "message": "向下箭头" },
+	"app.settings.game-options.keybind.key.arrow-left": { "message": "向左箭头" },
+	"app.settings.game-options.keybind.key.arrow-right": { "message": "向右箭头" },
+	"app.settings.game-options.keybind.key.arrow-up": { "message": "向上箭头" },
+	"app.settings.game-options.keybind.key.backspace": { "message": "退格" },
+	"app.settings.game-options.keybind.key.caps-lock": { "message": "大写锁定" },
+	"app.settings.game-options.keybind.key.delete": { "message": "删除" },
+	"app.settings.game-options.keybind.key.end": { "message": "End 键" },
+	"app.settings.game-options.keybind.key.enter": { "message": "回车" },
+	"app.settings.game-options.keybind.key.escape": { "message": "Esc 键" },
+	"app.settings.game-options.keybind.key.home": { "message": "Home 键" },
+	"app.settings.game-options.keybind.key.insert": { "message": "Insert 键" },
+	"app.settings.game-options.keybind.key.keypad-key": { "message": "数字键盘 {key}" },
+	"app.settings.game-options.keybind.key.left-alt": { "message": "左 Alt" },
+	"app.settings.game-options.keybind.key.left-command": { "message": "左 Command" },
+	"app.settings.game-options.keybind.key.left-control": { "message": "左 Ctrl" },
+	"app.settings.game-options.keybind.key.left-shift": { "message": "左 Shift" },
+	"app.settings.game-options.keybind.key.left-super": { "message": "左 Super" },
+	"app.settings.game-options.keybind.key.menu": { "message": "菜单" },
+	"app.settings.game-options.keybind.key.num-lock": { "message": "数字锁定" },
+	"app.settings.game-options.keybind.key.page-down": { "message": "Page Down 键" },
+	"app.settings.game-options.keybind.key.page-up": { "message": "Page Up 键" },
+	"app.settings.game-options.keybind.key.pause": { "message": "暂停" },
+	"app.settings.game-options.keybind.key.print-screen": { "message": "截图" },
+	"app.settings.game-options.keybind.key.right-alt": { "message": "右 Alt" },
+	"app.settings.game-options.keybind.key.right-command": { "message": "右 Command" },
+	"app.settings.game-options.keybind.key.right-control": { "message": "右 Ctrl" },
+	"app.settings.game-options.keybind.key.right-shift": { "message": "右 Shift" },
+	"app.settings.game-options.keybind.key.right-super": { "message": "右 Super" },
+	"app.settings.game-options.keybind.key.scroll-lock": { "message": "滚动锁定" },
+	"app.settings.game-options.keybind.key.space": { "message": "空格" },
+	"app.settings.game-options.keybind.key.tab": { "message": "Tab 键" },
+	"app.settings.game-options.keybind.key.unbound": { "message": "未绑定" },
+	"app.settings.game-options.keybind.key.unknown": { "message": "未知按键" },
+	"app.settings.game-options.keybind.listen": { "message": "请按下一个按键……" },
+	"app.settings.game-options.keybind.listening-status": { "message": "正在监听按键或鼠标按钮。按 Esc 清除绑定。" },
+	"app.settings.game-options.keybind.mixed": { "message": "各实例不同" },
+	"app.settings.game-options.keybind.modifier.alt": { "message": "Alt 键" },
+	"app.settings.game-options.keybind.modifier.command": { "message": "Command 键" },
+	"app.settings.game-options.keybind.modifier.control": { "message": "Ctrl 键" },
+	"app.settings.game-options.keybind.modifier.shift": { "message": "Shift 键" },
+	"app.settings.game-options.keybind.modifier.super": { "message": "Super 键" },
+	"app.settings.game-options.keybind.mouse.button": { "message": "鼠标 {button}" },
+	"app.settings.game-options.keybind.mouse.left": { "message": "鼠标左键" },
+	"app.settings.game-options.keybind.mouse.middle": { "message": "鼠标中键" },
+	"app.settings.game-options.keybind.mouse.right": { "message": "鼠标右键" },
+	"app.settings.game-options.keybind.recording-label": { "message": "{setting}：正在监听按键或鼠标按钮。按 Esc 清除绑定。" },
+	"app.settings.game-options.keybind.scancode": { "message": "扫描码 {code}" },
+	"app.settings.game-options.keybind.unsupported-status": { "message": "Minecraft 无法使用此输入，请尝试其他按键。" },
+	"app.settings.game-options.setting.advanced-opengl.label": { "message": "高级 OpenGL" },
+	"app.settings.game-options.setting.allow-cursor-changes.label": { "message": "允许光标变化" },
+	"app.settings.game-options.setting.allow-server-listing.description": { "message": "允许玩家名称出现在服务器列表中。" },
+	"app.settings.game-options.setting.allow-server-listing.label": { "message": "服务器列表" },
+	"app.settings.game-options.setting.alternate-blocks.label": { "message": "备用方块" },
+	"app.settings.game-options.setting.ambient-occlusion.label": { "message": "平滑光照" },
+	"app.settings.game-options.setting.ambient-volume.label": { "message": "环境" },
+	"app.settings.game-options.setting.anaglyph-3d.label": { "message": "3D 红蓝立体" },
+	"app.settings.game-options.setting.anisotropic-filtering.label": { "message": "各向异性过滤" },
+	"app.settings.game-options.setting.anisotropy.label": { "message": "各向异性" },
+	"app.settings.game-options.setting.attack-indicator.label": { "message": "攻击指示器" },
+	"app.settings.game-options.setting.auto-jump.description": { "message": "自动跳过一格高的障碍物。" },
+	"app.settings.game-options.setting.auto-jump.label": { "message": "自动跳跃" },
+	"app.settings.game-options.setting.auto-suggestions.label": { "message": "命令建议" },
+	"app.settings.game-options.setting.autosave-indicator.label": { "message": "自动保存指示器" },
+	"app.settings.game-options.setting.biome-blend-radius.description": { "message": "生物群系颜色过渡的距离。" },
+	"app.settings.game-options.setting.biome-blend-radius.label": { "message": "生物群系混合" },
+	"app.settings.game-options.setting.blocks-volume.label": { "message": "方块" },
+	"app.settings.game-options.setting.brightness.label": { "message": "亮度" },
+	"app.settings.game-options.setting.cape.description": { "message": "显示玩家的披风，包括鞘翅纹理。" },
+	"app.settings.game-options.setting.cape.label": { "message": "披风" },
+	"app.settings.game-options.setting.chat-background-only.label": { "message": "仅聊天背景" },
+	"app.settings.game-options.setting.chat-colors.label": { "message": "聊天颜色" },
+	"app.settings.game-options.setting.chat-delay.label": { "message": "聊天延迟" },
+	"app.settings.game-options.setting.chat-line-spacing.label": { "message": "聊天行间距" },
+	"app.settings.game-options.setting.chat-links-prompt.description": { "message": "打开聊天链接前询问" },
+	"app.settings.game-options.setting.chat-links-prompt.label": { "message": "打开链接前询问" },
+	"app.settings.game-options.setting.chat-links.description": { "message": "允许打开聊天中的网页链接。" },
+	"app.settings.game-options.setting.chat-links.label": { "message": "网页链接" },
+	"app.settings.game-options.setting.chat-opacity.description": { "message": "聊天文字的不透明度。" },
+	"app.settings.game-options.setting.chat-opacity.label": { "message": "聊天不透明度" },
+	"app.settings.game-options.setting.chat-preview.label": { "message": "聊天预览" },
+	"app.settings.game-options.setting.chat-scale.label": { "message": "聊天缩放" },
+	"app.settings.game-options.setting.chat-visibility.label": { "message": "聊天可见性" },
+	"app.settings.game-options.setting.chat-width.label": { "message": "聊天宽度" },
+	"app.settings.game-options.setting.chunk-fade-time.label": { "message": "区块淡出时间" },
+	"app.settings.game-options.setting.cloud-range.label": { "message": "云层距离" },
+	"app.settings.game-options.setting.clouds.label": { "message": "云" },
+	"app.settings.game-options.setting.ctrl-click-right-click.label": { "message": "按住 Control 点击代替右键点击" },
+	"app.settings.game-options.setting.cutout-leaves.label": { "message": "半透明树叶" },
+	"app.settings.game-options.setting.damage-tilt.label": { "message": "受伤倾斜" },
+	"app.settings.game-options.setting.dark-splash.description": { "message": "将 Mojang Studios 加载界面从红色改为黑色。" },
+	"app.settings.game-options.setting.dark-splash.label": { "message": "单色徽标" },
+	"app.settings.game-options.setting.darkness-pulsing.label": { "message": "黑暗脉动" },
+	"app.settings.game-options.setting.debug-gui-scale.label": { "message": "调试界面缩放" },
+	"app.settings.game-options.setting.directional-audio.label": { "message": "方向性音频" },
+	"app.settings.game-options.setting.discrete-mouse-scroll.description": { "message": "将每次鼠标滚轮输入视为一个滚动步进。" },
+	"app.settings.game-options.setting.discrete-mouse-scroll.label": { "message": "离散滚动" },
+	"app.settings.game-options.setting.entity-distance.label": { "message": "实体距离" },
+	"app.settings.game-options.setting.entity-shadows.label": { "message": "实体阴影" },
+	"app.settings.game-options.setting.exclusive-fullscreen.label": { "message": "独占全屏" },
+	"app.settings.game-options.setting.extra-telemetry.label": { "message": "可选遥测" },
+	"app.settings.game-options.setting.focused-chat-height.label": { "message": "聚焦时聊天高度" },
+	"app.settings.game-options.setting.force-unicode-font.label": { "message": "强制 Unicode 字体" },
+	"app.settings.game-options.setting.fov-effects.label": { "message": "视野效果" },
+	"app.settings.game-options.setting.fov.label": { "message": "视野" },
+	"app.settings.game-options.setting.fullscreen.label": { "message": "全屏" },
+	"app.settings.game-options.setting.glint-speed.label": { "message": "附魔光效速度" },
+	"app.settings.game-options.setting.glint-strength.label": { "message": "附魔光效强度" },
+	"app.settings.game-options.setting.graphics-backend.label": { "message": "图形后端" },
+	"app.settings.game-options.setting.graphics.description": { "message": "控制画面质量和性能。" },
+	"app.settings.game-options.setting.graphics.label": { "message": "画面" },
+	"app.settings.game-options.setting.gui-scale.description": { "message": "游戏界面和 HUD 的大小。" },
+	"app.settings.game-options.setting.gui-scale.label": { "message": "界面缩放" },
+	"app.settings.game-options.setting.hat.description": { "message": "显示帽子皮肤层。" },
+	"app.settings.game-options.setting.hat.label": { "message": "帽子" },
+	"app.settings.game-options.setting.held-item-tooltips.label": { "message": "手持物品提示" },
+	"app.settings.game-options.setting.hide-lightning-flashes.label": { "message": "隐藏闪电闪光" },
+	"app.settings.game-options.setting.hide-matched-names.label": { "message": "隐藏匹配的名称" },
+	"app.settings.game-options.setting.hide-server-address.label": { "message": "隐藏服务器地址" },
+	"app.settings.game-options.setting.hide-splash-texts.label": { "message": "隐藏启动标语" },
+	"app.settings.game-options.setting.high-contrast-outline.label": { "message": "高对比度方块轮廓" },
+	"app.settings.game-options.setting.high-contrast.description": { "message": "增强界面元素的对比度。" },
+	"app.settings.game-options.setting.high-contrast.label": { "message": "高对比度" },
+	"app.settings.game-options.setting.hostile-volume.label": { "message": "敌对生物" },
+	"app.settings.game-options.setting.improved-transparency.label": { "message": "改进透明度" },
+	"app.settings.game-options.setting.in-game-notifications.label": { "message": "游戏内通知" },
+	"app.settings.game-options.setting.inactivity-framerate-limit.label": { "message": "降低帧率" },
+	"app.settings.game-options.setting.invert-horizontal-mouse.label": { "message": "反转水平鼠标" },
+	"app.settings.game-options.setting.invert-mouse.description": { "message": "反转垂直鼠标移动。" },
+	"app.settings.game-options.setting.invert-mouse.label": { "message": "反转鼠标" },
+	"app.settings.game-options.setting.jacket.description": { "message": "显示夹克皮肤层。" },
+	"app.settings.game-options.setting.jacket.label": { "message": "夹克" },
+	"app.settings.game-options.setting.japanese-glyph-variants.label": { "message": "日文字符变体" },
+	"app.settings.game-options.setting.key-advancements.label": { "message": "进度" },
+	"app.settings.game-options.setting.key-attack.label": { "message": "攻击" },
+	"app.settings.game-options.setting.key-back.label": { "message": "后退" },
+	"app.settings.game-options.setting.key-chat.label": { "message": "打开聊天" },
+	"app.settings.game-options.setting.key-command.label": { "message": "命令" },
+	"app.settings.game-options.setting.key-debug-advanced-tooltips.label": { "message": "显示高级提示" },
+	"app.settings.game-options.setting.key-debug-chunk-borders.label": { "message": "显示区块边界" },
+	"app.settings.game-options.setting.key-debug-clear-chat.label": { "message": "清空聊天" },
+	"app.settings.game-options.setting.key-debug-copy-location.label": { "message": "复制位置" },
+	"app.settings.game-options.setting.key-debug-copy-recreate-command.label": { "message": "复制重建命令" },
+	"app.settings.game-options.setting.key-debug-crash.label": { "message": "触发调试崩溃" },
+	"app.settings.game-options.setting.key-debug-dump-dynamic-textures.label": { "message": "转储动态纹理" },
+	"app.settings.game-options.setting.key-debug-dump-version.label": { "message": "转储版本" },
+	"app.settings.game-options.setting.key-debug-focus-pause.label": { "message": "失去焦点时暂停" },
+	"app.settings.game-options.setting.key-debug-fps-charts.label": { "message": "FPS 图表" },
+	"app.settings.game-options.setting.key-debug-hitboxes.label": { "message": "显示碰撞箱" },
+	"app.settings.game-options.setting.key-debug-improved-transparency.label": { "message": "改进透明度调试视图" },
+	"app.settings.game-options.setting.key-debug-lightmap-texture.label": { "message": "光照贴图纹理" },
+	"app.settings.game-options.setting.key-debug-modifier.label": { "message": "调试修饰键" },
+	"app.settings.game-options.setting.key-debug-network-charts.label": { "message": "网络图表" },
+	"app.settings.game-options.setting.key-debug-options.label": { "message": "调试选项" },
+	"app.settings.game-options.setting.key-debug-overlay.label": { "message": "调试覆盖层" },
+	"app.settings.game-options.setting.key-debug-profiling-chart.label": { "message": "性能分析图表" },
+	"app.settings.game-options.setting.key-debug-profiling.label": { "message": "开始性能分析" },
+	"app.settings.game-options.setting.key-debug-reload-chunks.label": { "message": "重新加载区块" },
+	"app.settings.game-options.setting.key-debug-reload-resource-packs.label": { "message": "重新加载资源包" },
+	"app.settings.game-options.setting.key-debug-spectate.label": { "message": "旁观实体" },
+	"app.settings.game-options.setting.key-debug-switch-game-mode.label": { "message": "切换游戏模式" },
+	"app.settings.game-options.setting.key-drop.label": { "message": "丢弃物品" },
+	"app.settings.game-options.setting.key-forward.label": { "message": "前进" },
+	"app.settings.game-options.setting.key-friends.label": { "message": "好友" },
+	"app.settings.game-options.setting.key-fullscreen.label": { "message": "切换全屏" },
+	"app.settings.game-options.setting.key-hotbar-1.label": { "message": "快捷栏 1" },
+	"app.settings.game-options.setting.key-hotbar-2.label": { "message": "快捷栏 2" },
+	"app.settings.game-options.setting.key-hotbar-3.label": { "message": "快捷栏 3" },
+	"app.settings.game-options.setting.key-hotbar-4.label": { "message": "快捷栏 4" },
+	"app.settings.game-options.setting.key-hotbar-5.label": { "message": "快捷栏 5" },
+	"app.settings.game-options.setting.key-hotbar-6.label": { "message": "快捷栏 6" },
+	"app.settings.game-options.setting.key-hotbar-7.label": { "message": "快捷栏 7" },
+	"app.settings.game-options.setting.key-hotbar-8.label": { "message": "快捷栏 8" },
+	"app.settings.game-options.setting.key-hotbar-9.label": { "message": "快捷栏 9" },
+	"app.settings.game-options.setting.key-inventory.label": { "message": "物品栏" },
+	"app.settings.game-options.setting.key-jump.label": { "message": "跳跃" },
+	"app.settings.game-options.setting.key-left.label": { "message": "向左平移" },
+	"app.settings.game-options.setting.key-load-toolbar.label": { "message": "加载工具栏" },
+	"app.settings.game-options.setting.key-perspective.label": { "message": "切换视角" },
+	"app.settings.game-options.setting.key-pick-item.label": { "message": "选取方块" },
+	"app.settings.game-options.setting.key-player-list.label": { "message": "玩家列表" },
+	"app.settings.game-options.setting.key-quick-actions.label": { "message": "快捷操作" },
+	"app.settings.game-options.setting.key-right.label": { "message": "向右平移" },
+	"app.settings.game-options.setting.key-save-toolbar.label": { "message": "保存工具栏" },
+	"app.settings.game-options.setting.key-screenshot.label": { "message": "截图" },
+	"app.settings.game-options.setting.key-smooth-camera.label": { "message": "切换电影视角" },
+	"app.settings.game-options.setting.key-sneak.label": { "message": "潜行" },
+	"app.settings.game-options.setting.key-social-interactions.label": { "message": "社交互动" },
+	"app.settings.game-options.setting.key-spectator-hotbar.label": { "message": "旁观者快捷栏" },
+	"app.settings.game-options.setting.key-spectator-outlines.label": { "message": "高亮旁观者" },
+	"app.settings.game-options.setting.key-sprint.label": { "message": "疾跑" },
+	"app.settings.game-options.setting.key-swap-offhand.label": { "message": "交换副手" },
+	"app.settings.game-options.setting.key-toggle-gui.label": { "message": "切换 HUD" },
+	"app.settings.game-options.setting.key-toggle-spectator-shader.label": { "message": "切换旁观者着色器" },
+	"app.settings.game-options.setting.key-use.label": { "message": "使用物品" },
+	"app.settings.game-options.setting.language.label": { "message": "语言" },
+	"app.settings.game-options.setting.left-pants-leg.label": { "message": "左裤腿" },
+	"app.settings.game-options.setting.left-sleeve.label": { "message": "左袖" },
+	"app.settings.game-options.setting.legacy-framerate-limit.label": { "message": "帧率上限" },
+	"app.settings.game-options.setting.legacy-view-distance.label": { "message": "视距" },
+	"app.settings.game-options.setting.mac-fullscreen-menu.label": { "message": "全屏时显示 macOS 菜单" },
+	"app.settings.game-options.setting.main-hand.description": { "message": "选择主手为左手还是右手。" },
+	"app.settings.game-options.setting.main-hand.label": { "message": "主手" },
+	"app.settings.game-options.setting.master-volume.label": { "message": "主音量" },
+	"app.settings.game-options.setting.max-framerate.label": { "message": "最大帧率" },
+	"app.settings.game-options.setting.menu-background-blur.label": { "message": "菜单背景模糊" },
+	"app.settings.game-options.setting.mipmap-levels.description": { "message": "平滑远处纹理。" },
+	"app.settings.game-options.setting.mipmap-levels.label": { "message": "Mipmap 级别" },
+	"app.settings.game-options.setting.mouse-wheel-sensitivity.label": { "message": "鼠标滚轮灵敏度" },
+	"app.settings.game-options.setting.music-frequency.label": { "message": "音乐频率" },
+	"app.settings.game-options.setting.music-toast.description": { "message": "选择是否在暂停菜单和提示中显示音乐标题。" },
+	"app.settings.game-options.setting.music-toast.label": { "message": "音乐通知" },
+	"app.settings.game-options.setting.music-volume.label": { "message": "音乐" },
+	"app.settings.game-options.setting.narrator-hotkey.label": { "message": "旁白快捷键" },
+	"app.settings.game-options.setting.narrator.description": { "message": "选择旁白朗读的内容。" },
+	"app.settings.game-options.setting.narrator.label": { "message": "旁白" },
+	"app.settings.game-options.setting.neutral-volume.label": { "message": "友好生物" },
+	"app.settings.game-options.setting.notification-time.description": { "message": "提示通知保持显示的时长。" },
+	"app.settings.game-options.setting.notification-time.label": { "message": "通知时长" },
+	"app.settings.game-options.setting.operator-items-tab.label": { "message": "管理员物品栏标签" },
+	"app.settings.game-options.setting.panorama-speed.label": { "message": "全景图速度" },
+	"app.settings.game-options.setting.particles.label": { "message": "粒子" },
+	"app.settings.game-options.setting.players-volume.label": { "message": "玩家" },
+	"app.settings.game-options.setting.prioritize-chunk-updates.label": { "message": "区块更新优先级" },
+	"app.settings.game-options.setting.quit-shortcuts.label": { "message": "退出快捷键" },
+	"app.settings.game-options.setting.raw-mouse-input.label": { "message": "原始鼠标输入" },
+	"app.settings.game-options.setting.realms-notifications.label": { "message": "Realms 通知" },
+	"app.settings.game-options.setting.record-volume.label": { "message": "唱片机/音符盒" },
+	"app.settings.game-options.setting.reduced-debug-info.label": { "message": "减少调试信息" },
+	"app.settings.game-options.setting.render-distance.label": { "message": "渲染距离" },
+	"app.settings.game-options.setting.right-pants-leg.label": { "message": "右裤腿" },
+	"app.settings.game-options.setting.right-sleeve.label": { "message": "右袖" },
+	"app.settings.game-options.setting.rotate-with-minecart.label": { "message": "随矿车旋转" },
+	"app.settings.game-options.setting.save-chat-drafts.label": { "message": "保存聊天草稿" },
+	"app.settings.game-options.setting.screen-effects.label": { "message": "屏幕效果" },
+	"app.settings.game-options.setting.secure-chat-only.label": { "message": "仅显示安全聊天" },
+	"app.settings.game-options.setting.sensitivity.label": { "message": "鼠标灵敏度" },
+	"app.settings.game-options.setting.server-textures.label": { "message": "服务器纹理" },
+	"app.settings.game-options.setting.share-presence.label": { "message": "共享在线状态" },
+	"app.settings.game-options.setting.simulation-distance.description": { "message": "实体更新以及方块和流体更新的距离。" },
+	"app.settings.game-options.setting.simulation-distance.label": { "message": "模拟距离" },
+	"app.settings.game-options.setting.snooper.label": { "message": "数据收集" },
+	"app.settings.game-options.setting.sprint-window.label": { "message": "疾跑窗口" },
+	"app.settings.game-options.setting.subtitles.description": { "message": "显示游戏声音的字幕。" },
+	"app.settings.game-options.setting.subtitles.label": { "message": "字幕" },
+	"app.settings.game-options.setting.text-background-opacity.label": { "message": "文字背景不透明度" },
+	"app.settings.game-options.setting.texture-filtering.label": { "message": "纹理过滤" },
+	"app.settings.game-options.setting.toggle-attack.label": { "message": "切换攻击" },
+	"app.settings.game-options.setting.toggle-crouch.description": { "message": "按一次即可保持潜行。" },
+	"app.settings.game-options.setting.toggle-crouch.label": { "message": "切换潜行" },
+	"app.settings.game-options.setting.toggle-sprint.description": { "message": "按一次即可保持疾跑。" },
+	"app.settings.game-options.setting.toggle-sprint.label": { "message": "切换疾跑" },
+	"app.settings.game-options.setting.toggle-use.label": { "message": "切换使用" },
+	"app.settings.game-options.setting.touchscreen.label": { "message": "触屏模式" },
+	"app.settings.game-options.setting.ui-volume.label": { "message": "界面" },
+	"app.settings.game-options.setting.unfocused-chat-height.label": { "message": "未聚焦时聊天高度" },
+	"app.settings.game-options.setting.use-vbo.label": { "message": "使用 VBO" },
+	"app.settings.game-options.setting.view-bobbing.description": { "message": "行走时为镜头添加摇摆效果。" },
+	"app.settings.game-options.setting.view-bobbing.label": { "message": "视角摇摆" },
+	"app.settings.game-options.setting.vignette.label": { "message": "晕影" },
+	"app.settings.game-options.setting.voice-volume.label": { "message": "语音和语音朗读" },
+	"app.settings.game-options.setting.vsync.description": { "message": "将帧率限制为显示器刷新率，以防止画面撕裂。" },
+	"app.settings.game-options.setting.vsync.label": { "message": "垂直同步" },
+	"app.settings.game-options.setting.weather-radius.label": { "message": "天气范围" },
+	"app.settings.game-options.setting.weather-volume.label": { "message": "天气" },
+	"app.settings.game-options.validation.changed-since-opened": { "message": "此设置已在其他位置更改，请检查后重试。" },
+	"app.settings.game-options.validation.invalid-value": { "message": "请选择有效值。" },
+	"app.settings.game-options.validation.missing-value": { "message": "请先选择一个值。" },
+	"app.settings.game-options.validation.no-compatible-instances": { "message": "部分实例无法使用此设置" },
+	"app.settings.synced-options.game-settings.conflict-text": { "message": "我们已加载最新设置。请检查更改后再次保存。" },
+	"app.settings.synced-options.game-settings.conflict-title": { "message": "这些设置已在其他地方更改" },
+	"app.settings.synced-options.game-settings.custom-empty": { "message": "Modrinth 在某个实例中找到模组添加的设置后，它们会显示在这里。" },
+	"app.settings.synced-options.game-settings.disable-all": { "message": "取消同步全部" },
+	"app.settings.synced-options.game-settings.empty": { "message": "没有匹配当前搜索或筛选条件的设置。" },
+	"app.settings.synced-options.game-settings.enable-all": { "message": "同步全部" },
+	"app.settings.synced-options.game-settings.load-failed": { "message": "无法加载游戏设置。" },
+	"app.settings.synced-options.game-settings.loading": { "message": "正在加载设置……" },
+	"app.settings.synced-options.game-settings.not-being-synced": { "message": "未同步" },
+	"app.settings.synced-options.game-settings.retry": { "message": "重试" },
+	"app.settings.synced-options.game-settings.save": { "message": "保存设置" },
+	"app.settings.synced-options.game-settings.search": { "message": "搜索设置……" },
+	"app.settings.synced-options.game-settings.sync-description": { "message": "同步的选项会应用到每个实例，并覆盖整合包中包含的值。" },
+	"app.settings.synced-options.game-settings.sync-setting": { "message": "在所有实例间同步{setting}" },
+	"app.settings.synced-options.game-settings.sync-title": { "message": "同步游戏设置" },
+	"app.settings.synced-options.game-settings.synced-across-instances": { "message": "已在所有实例间同步" },
+	"app.settings.synced-options.game-settings.title": { "message": "游戏设置" },
+	"app.settings.synced-options.game-settings.unsaved-changes": { "message": "你有未保存的更改。" },
+	"app.settings.synced-options.game-settings.unsync-setting": { "message": "停止在所有实例间同步{setting}" },
+	"app.settings.synced-options.game-settings.value-mixed": { "message": "各实例不同" },
+	"app.settings.synced-options.game-settings.value-off": { "message": "关闭" },
+	"app.settings.synced-options.game-settings.value-on": { "message": "开启" },
+	"app.settings.synced-options.game-settings.value-unset": { "message": "选择一个值" },
+	"app.anniversary.banner": { "message": "Starlight {ordinal} 周年快乐！" }
 }

apps/app-frontend/src/locales/zh-TW/index.json

@@ -572,6 +572,57 @@
   "app.appearance-settings.auto-hide-downloads-button.description": {
     "message": "沒有進行中的下載任務時隱藏側邊欄中的下載按鈕，有任務時自動顯示。"
   },
+  "app.appearance-settings.fonts.title": {
+    "message": "字型"
+  },
+  "app.appearance-settings.fonts.description": {
+    "message": "選擇啟動器介面與日誌使用的字型。"
+  },
+  "app.appearance-settings.fonts.ui-font": {
+    "message": "介面字型"
+  },
+  "app.appearance-settings.fonts.ui-font-description": {
+    "message": "套用於啟動器介面。僅列出系統已安裝的字型。"
+  },
+  "app.appearance-settings.fonts.mono-font": {
+    "message": "等寬字型"
+  },
+  "app.appearance-settings.fonts.mono-font-description": {
+    "message": "用於日誌、伺服器主控台等等寬內容。"
+  },
+  "app.appearance-settings.fonts.default": {
+    "message": "啟動器預設"
+  },
+  "app.appearance-settings.fonts.monospace": {
+    "message": "等寬"
+  },
+  "app.appearance-settings.fonts.missing": {
+    "message": "未安裝"
+  },
+  "app.appearance-settings.fonts.search-placeholder": {
+    "message": "搜尋已安裝的字型"
+  },
+  "app.appearance-settings.fonts.no-results": {
+    "message": "沒有符合的字型"
+  },
+  "app.appearance-settings.fonts.load-failed": {
+    "message": "無法讀取已安裝的字型清單。"
+  },
+  "app.appearance-settings.fonts.retry": {
+    "message": "重試"
+  },
+  "app.appearance-settings.fonts.reset": {
+    "message": "重設"
+  },
+  "app.appearance-settings.fonts.preview": {
+    "message": "預覽"
+  },
+  "app.appearance-settings.fonts.ui-preview-sample": {
+    "message": "永和九年，歲在癸丑，暮春之初。"
+  },
+  "app.appearance-settings.fonts.mono-preview-sample": {
+    "message": "const x = () => 0; // 等寬"
+  },
   "app.appearance-settings.auto-hide-downloads-button.title": {
     "message": "自動隱藏下載按鈕"
   },
@@ -6827,6 +6878,12 @@
   "app.settings.resources.curseforge-restriction-bypass-description": {
     "message": "當 CurseForge 不提供下載地址時，根據檔案資訊推導其 CDN 地址並嘗試自動下載。關閉後將使用手動下載流程。"
   },
+  "app.settings.resources.ignore-ssl-errors": {
+    "message": "忽略 SSL 憑證錯誤"
+  },
+  "app.settings.resources.ignore-ssl-errors-description": {
+    "message": "跳過啟動器網路請求的 TLS 憑證檢查。僅當你信任目前網路並了解其安全風險時才啟用。"
+  },
   "app.settings.resources.database-backups": {
     "message": "應用程式資料庫備份"
   },
@@ -10138,5 +10195,170 @@
   },
   "app.instance.dependencies.zoom-out": {
     "message": "縮小"
+  },
+  "instance.backups.added-size": {
+    "message": "新增存储 {size}"
+  },
+  "instance.backups.all-included": {
+    "message": "实例中的所有文件和文件夹都会纳入备份。"
+  },
+  "instance.backups.backup-now": {
+    "message": "立即备份"
+  },
+  "instance.backups.cancel": {
+    "message": "取消备份"
+  },
+  "instance.backups.choose": {
+    "message": "默认备份实例中的全部内容，请添加不需要备份的文件或文件夹。"
+  },
+  "instance.backups.delete": {
+    "message": "删除备份"
+  },
+  "instance.backups.delete-body": {
+    "message": "此快照将被永久删除，不再使用的仓库文件也会一并清理。"
+  },
+  "instance.backups.delete-title": {
+    "message": "删除此备份？"
+  },
+  "instance.backups.description": {
+    "message": "在实例关闭时，为整个实例创建去重快照。"
+  },
+  "instance.backups.disable": {
+    "message": "关闭备份"
+  },
+  "instance.backups.disable-blocked": {
+    "message": "必须先删除全部快照才能关闭备份。"
+  },
+  "instance.backups.edit-exclusions": {
+    "message": "编辑排除项"
+  },
+  "instance.backups.empty": {
+    "message": "尚未创建任何备份。"
+  },
+  "instance.backups.enable": {
+    "message": "启用备份"
+  },
+  "instance.backups.excluded-paths": {
+    "message": "不备份：{paths}"
+  },
+  "instance.backups.exclusions.add-file": {
+    "message": "添加忽略文件"
+  },
+  "instance.backups.exclusions.add-folder": {
+    "message": "添加忽略文件夹"
+  },
+  "instance.backups.exclusions.empty": {
+    "message": "没有忽略任何文件或文件夹。"
+  },
+  "instance.backups.exclusions.remove": {
+    "message": "从排除项中移除 {path}"
+  },
+  "instance.backups.loading": {
+    "message": "正在加载备份设置……"
+  },
+  "instance.backups.progress-bytes": {
+    "message": "已处理 {processed}，共 {total}"
+  },
+  "instance.backups.restore": {
+    "message": "恢复备份"
+  },
+  "instance.backups.restore-body": {
+    "message": "即将进行的操作：新增 {added} 个文件，修改 {modified} 个文件，删除 {deleted} 个文件。是否继续？"
+  },
+  "instance.backups.restore-title": {
+    "message": "恢复此备份？"
+  },
+  "instance.backups.save-exclusions": {
+    "message": "保存排除项"
+  },
+  "instance.backups.snapshot-meta": {
+    "message": "{files, plural, other {# 个文件}} · {size}"
+  },
+  "instance.backups.snapshots": {
+    "message": "快照"
+  },
+  "instance.backups.stage.applying": {
+    "message": "正在应用变更文件"
+  },
+  "instance.backups.stage.failed": {
+    "message": "备份失败"
+  },
+  "instance.backups.stage.hashing": {
+    "message": "正在计算文件哈希"
+  },
+  "instance.backups.stage.interrupted": {
+    "message": "备份任务已中断"
+  },
+  "instance.backups.stage.materializing": {
+    "message": "正在准备变更文件"
+  },
+  "instance.backups.stage.preview": {
+    "message": "正在分析恢复变更"
+  },
+  "instance.backups.stage.queued": {
+    "message": "等待开始"
+  },
+  "instance.backups.stage.saving": {
+    "message": "正在保存快照索引"
+  },
+  "instance.backups.stage.scanning": {
+    "message": "正在扫描文件"
+  },
+  "instance.backups.stage.validating": {
+    "message": "正在验证恢复任务"
+  },
+  "instance.backups.title": {
+    "message": "实例备份"
+  },
+  "instance.backups.unavailable": {
+    "message": "备份不可用"
+  },
+  "instance.backups.unavailable.direct-linked": {
+    "message": "不支持备份直接关联到其他启动器的实例。"
+  },
+  "instance.backups.unavailable.external-directory": {
+    "message": "不支持备份使用外部游戏目录的实例。"
+  },
+  "instance.backups.unavailable.not-installed": {
+    "message": "请先完成实例安装，再启用备份。"
+  },
+  "instance.backups.unavailable.root-link": {
+    "message": "不支持备份根文件夹为链接的实例。"
+  },
+  "instance.backups.unavailable.root-missing": {
+    "message": "实例文件夹不存在。"
+  },
+  "instance.backups.unavailable.symlink": {
+    "message": "不支持备份以符号链接导入的实例。"
+  },
+  "settings.backups.repository.change": {
+    "message": "更改文件夹"
+  },
+  "settings.backups.repository.description": {
+    "message": "存放去重后的实例备份数据及其独立索引数据库。"
+  },
+  "settings.backups.repository.location": {
+    "message": "位置"
+  },
+  "settings.backups.repository.location-description": {
+    "message": "更改位置会移动完整仓库。请选择新的或空的文件夹。"
+  },
+  "settings.backups.repository.moving": {
+    "message": "正在移动仓库……"
+  },
+  "settings.backups.repository.moving-progress": {
+    "message": "正在移动备份仓库：已处理 {processed}，共 {total}"
+  },
+  "settings.backups.repository.title": {
+    "message": "备份文件仓库"
+  },
+  "settings.backups.repository.unavailable": {
+    "message": "仓库不可用"
+  },
+  "settings.backups.repository.usage": {
+    "message": "存储占用"
+  },
+  "settings.backups.repository.usage-description": {
+    "message": "实际存储 {stored}，对应 {logical} 的备份数据，共 {count, plural, other {# 个快照}}。"
   }
 }

apps/app-frontend/src/pages/instance/Index.vue

@@ -688,11 +688,13 @@ const tabs = computed(() => [
 		label: formatMessage(messages.contentTab),
 		href: `${basePath.value}`,
 		icon: BoxesIcon,
+		onboardingId: 'instance-tab-content',
 	},
 	{
 		label: formatMessage(messages.filesTab),
 		href: `${basePath.value}/files`,
 		icon: FolderOpenIcon,
+		onboardingId: 'instance-tab-files',
 	},
 	{
 		label: formatMessage(messages.screenshotsTab),
@@ -703,11 +705,13 @@ const tabs = computed(() => [
 		label: formatMessage(messages.worldsTab),
 		href: `${basePath.value}/worlds`,
 		icon: GlobeIcon,
+		onboardingId: 'instance-tab-worlds',
 	},
 	{
 		label: formatMessage(messages.logsTab),
 		href: `${basePath.value}/logs`,
 		icon: TerminalSquareIcon,
+		onboardingId: 'instance-tab-logs',
 	},
 ])
 

apps/app-frontend/src/pages/instance/components/settings-modal/instance-settings-context.ts

@@ -0,0 +1,2 @@
+export type { InstanceSettingsContext } from '@/providers/instance-settings'
+export { injectInstanceSettings, provideInstanceSettings } from '@/providers/instance-settings'

apps/app-frontend/src/providers/app-settings-modal.ts

@@ -0,0 +1,18 @@
+import type { InjectionKey } from 'vue'
+
+export type UnsavedChangesController = {
+	hasChanges: () => boolean
+	getOriginal: () => Record<string, unknown>
+	getModified: () => Record<string, unknown>
+	isSaving: () => boolean
+	reset: () => void
+	save: () => void | Promise<void>
+}
+
+export type AppSettingsModalContext = {
+	close: () => boolean
+	registerUnsavedChangesController: (controller: UnsavedChangesController | null) => void
+}
+
+export const appSettingsModalContextKey: InjectionKey<AppSettingsModalContext> =
+	Symbol('appSettingsModalContext')

apps/app-frontend/src/providers/instance-settings.ts

@@ -8,7 +8,7 @@ export interface InstanceSettingsContext {
 	offline?: boolean
 	isMinecraftServer: Ref<boolean>
 	onUnlinked: () => void
-	closeModal?: () => void
+	closeModal?: (onAfterClose?: () => void) => void
 }
 
 export const [injectInstanceSettings, provideInstanceSettings] =

apps/app-frontend/src/providers/setup.ts

@@ -3,6 +3,7 @@ import type { AbstractPopupNotificationManager, AbstractWebNotificationManager }
 import { setupCreationModal } from './setup/creation-modal'
 import { setupFileDropProvider } from './setup/file-drop'
 import { setupFilePickerProvider } from './setup/file-picker'
+import { setupImageViewerEditorProvider } from './setup/image-viewer-editor'
 import { setupInstanceImportProvider } from './setup/instance-import'
 import { setupTagsProvider } from './setup/tags'
 
@@ -14,6 +15,7 @@ export function setupProviders(
 	setupTagsProvider(notificationManager, stateInitialization)
 	const fileDrop = setupFileDropProvider()
 	const filePicker = setupFilePickerProvider()
+	setupImageViewerEditorProvider()
 	setupInstanceImportProvider(notificationManager)
 
 	return {

apps/app-frontend/src/providers/setup/image-viewer-editor.ts

@@ -0,0 +1,16 @@
+import {
+	type ImageViewerEditorData,
+	type ImageViewerEditorSource,
+	provideImageViewerEditor,
+} from '@modrinth/ui'
+import { readFile } from '@tauri-apps/plugin-fs'
+
+export function setupImageViewerEditorProvider() {
+	provideImageViewerEditor({
+		async loadEditorData(source: ImageViewerEditorSource): Promise<ImageViewerEditorData> {
+			return {
+				source: new Blob([await readFile(source.path)], { type: 'image/png' }),
+			}
+		},
+	})
+}

apps/app-frontend/src/routes.js

@@ -119,6 +119,10 @@ export default new createRouter({
 				pageTransitionGroup: 'multiplayer',
 			},
 			children: [
+				{
+					path: '',
+					redirect: { name: 'MultiplayerRooms' },
+				},
 				{
 					path: 'rooms',
 					name: 'MultiplayerRooms',

apps/app-frontend/src/store/theme.ts

@@ -1,5 +1,11 @@
 import { defineStore } from 'pinia'
 
+import {
+	DEFAULT_MONO_FONT_STACK,
+	DEFAULT_UI_FONT_STACK,
+	resolveFontFamily,
+} from '@/helpers/font-family.ts'
+
 let systemThemeMq: MediaQueryList | null = null
 
 export const DEFAULT_FEATURE_FLAGS = {
@@ -19,6 +25,7 @@ export const DEFAULT_FEATURE_FLAGS = {
 	page_transitions: true,
 	advanced_filters_collapsed: true,
 	auto_install_dependencies: true,
+	force_anniversary_celebration: false,
 }
 
 export const THEME_OPTIONS = ['dark', 'light', 'oled', 'system'] as const
@@ -130,6 +137,9 @@ export type ThemeStore = {
 
 	devMode: boolean
 	featureFlags: FeatureFlags
+
+	uiFont: string | null
+	monoFont: string | null
 }
 
 export const DEFAULT_THEME_STORE: ThemeStore = {
@@ -154,6 +164,9 @@ export const DEFAULT_THEME_STORE: ThemeStore = {
 
 	devMode: false,
 	featureFlags: DEFAULT_FEATURE_FLAGS,
+
+	uiFont: null,
+	monoFont: null,
 }
 
 export const useTheming = defineStore('themeStore', {
@@ -249,6 +262,32 @@ export const useTheming = defineStore('themeStore', {
 				`${Math.min(Math.max(this.transparentBackgroundOpacity, 0), 100)}%`,
 			)
 		},
+		/**
+		 * The font tokens are declared on `body` in the shared defaults, so the
+		 * launcher picks up the chosen family by overriding the CSS variable there.
+		 */
+		setUiFont() {
+			const body = document.body
+			if (this.uiFont) {
+				body.style.setProperty(
+					'--font-standard',
+					resolveFontFamily(this.uiFont, DEFAULT_UI_FONT_STACK),
+				)
+			} else {
+				body.style.removeProperty('--font-standard')
+			}
+		},
+		setMonoFont() {
+			const body = document.body
+			if (this.monoFont) {
+				body.style.setProperty(
+					'--mono-font',
+					resolveFontFamily(this.monoFont, DEFAULT_MONO_FONT_STACK),
+				)
+			} else {
+				body.style.removeProperty('--mono-font')
+			}
+		},
 		getFeatureFlag(key: FeatureFlag) {
 			return this.featureFlags[key] ?? DEFAULT_FEATURE_FLAGS[key]
 		},

apps/app/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "theseus_gui"
 # The actual version is set by the theseus-build workflow on tagging
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 edition.workspace = true
 description = "Axolotl Launcher is a cross-platform Minecraft launcher"
 homepage = "https://www.ghs.red"
@@ -16,6 +16,7 @@ dashmap = { workspace = true }
 either = { workspace = true }
 enumset = { workspace = true, features = ["serde"] }
 flate2 = { workspace = true }
+fontdb = { workspace = true }
 futures = { workspace = true }
 hyper = { workspace = true, features = ["server"] }
 hyper-util = { workspace = true }
@@ -28,6 +29,7 @@ paste = { workspace = true }
 path-util = { workspace = true }
 quartz_nbt = { workspace = true, features = ["serde"] }
 regex = { workspace = true }
+semver = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 serde_with = { workspace = true }

apps/app/build.rs

@@ -365,6 +365,7 @@ fn main() {
                         "install_existing_instance",
                         "hosted_default",
                         "hosted_set_session",
+                        "hosted_has_game_account",
                         "hosted_create",
                         "hosted_binding",
                         "hosted_sync",
@@ -427,6 +428,21 @@ fn main() {
                 InlinedPlugin::new()
                     .commands(&[
                         "instance_remove",
+                        "instance_get_backup_repository_status",
+                        "instance_move_backup_repository",
+                        "instance_get_backup_config",
+                        "instance_normalize_backup_exclusion",
+                        "instance_enable_backups",
+                        "instance_update_backup_exclusions",
+                        "instance_disable_backups",
+                        "instance_start_backup",
+                        "instance_cancel_backup",
+                        "instance_list_backup_operations",
+                        "instance_list_backups",
+                        "instance_delete_backup",
+                        "instance_get_backup_restore_preview",
+                        "instance_restore_backup",
+                        "instance_get_backup_delete_summary",
                         "instance_create_direct_link",
                         "instance_sync_direct_links",
                         "instance_get",
@@ -508,6 +524,47 @@ fn main() {
                         "instance_edit_icon",
                         "instance_export_mrpack",
                         "instance_get_pack_export_candidates",
+                        "instance_list_screenshots",
+                        "instance_list_all_screenshots",
+                        "instance_list_synced_screenshots",
+                        "instance_save_edited_screenshot",
+                        "instance_list_screenshot_groups",
+                        "instance_create_screenshot_group",
+                        "instance_rename_screenshot_group",
+                        "instance_delete_screenshot_group",
+                        "instance_set_screenshot_group_memberships",
+                        "instance_import_screenshot_groups",
+                        "instance_delete_screenshots",
+                        "instance_export_screenshots",
+                        "instance_move_screenshots",
+                        "instance_open_screenshot",
+                        "instance_get_synced_options",
+                        "instance_get_initialized_synced_options",
+                        "instance_get_synced_options_overview",
+                        "instance_get_synced_option_capabilities",
+                        "instance_get_synced_option_join_preview",
+                        "instance_set_synced_option",
+                        "instance_set_instance_synced_option",
+                        "instance_get_synced_command_history",
+                        "instance_set_synced_command_history",
+                        "instance_list_synced_servers",
+                        "instance_update_synced_server",
+                        "instance_remove_synced_server",
+                        "instance_get_synced_game_options_config",
+                        "instance_preview_synced_game_option_changes",
+                        "instance_save_synced_game_option_changes",
+                        "instance_list_game_options_sync_sources",
+                        "instance_get_game_setting_locale_labels",
+                        "instance_get_local_game_options_config",
+                        "instance_preview_local_game_option_changes",
+                        "instance_save_local_game_option_changes",
+                        "instance_get_pack_sync_preview",
+                        "instance_sync_pack",
+                        "instance_desync_pack",
+                        "instance_list_synced_packs",
+                        "instance_upload_synced_pack",
+                        "instance_set_synced_pack_enabled",
+                        "instance_remove_synced_pack",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,
@@ -524,6 +581,7 @@ fn main() {
                         "proxy_get",
                         "proxy_set",
                         "proxy_test",
+                        "set_ui_scale",
                     ])
                     .default_permission(
                         DefaultPermissionRule::AllowAllCommands,
@@ -669,6 +727,7 @@ fn main() {
                         "file_save_as",
                         "file_read_dragged_file",
                         "screenshot_thumbnail",
+                        "instance_icon_thumbnail",
                         "studio_read_text",
                         "studio_read_binary",
                         "studio_write_binary",
@@ -680,6 +739,14 @@ fn main() {
                         DefaultPermissionRule::AllowAllCommands,
                     ),
             )
+            .plugin(
+                "fonts",
+                InlinedPlugin::new()
+                    .commands(&["fonts_get_system_fonts"])
+                    .default_permission(
+                        DefaultPermissionRule::AllowAllCommands,
+                    ),
+            )
             .plugin(
                 "drop",
                 InlinedPlugin::new()

apps/app/nsis/installer.nsi

@@ -650,6 +650,15 @@ Function PageLeaveOptions
     Abort
   ${EndIf}
 
+  ; 若安装位置被选在盘符根目录（如 E:\），自动在其下创建 Starlight 子目录，
+  ; 避免启动器文件直接散落在根目录。用户选的具体子目录不受影响。
+  ${GetRoot} "$INSTDIR" $0
+  StrCpy $1 "$0" -1
+  ${If} "$INSTDIR" == "$1"
+    StrCpy $INSTDIR "$INSTDIR\Starlight"
+    ${NSD_SetText} $InstallDirInput $INSTDIR
+  ${EndIf}
+
   ${NSD_GetState} $DesktopShortcutCheckbox $DesktopShortcutState
 
   ${If} $FreshInstall <> 1

apps/app/src/api/files.rs

@@ -9,7 +9,7 @@ use std::path::PathBuf;
 use std::sync::Mutex;
 use tauri::{Emitter, Runtime};
 use tauri_plugin_dialog::DialogExt;
-use theseus::instance::{get_full_path, list};
+use theseus::instance::get_full_path;
 
 const STUDIO_FILES_CHANGED_EVENT: &str = "studio-files-changed";
 

apps/app/src/api/fonts.rs

@@ -0,0 +1,91 @@
+use serde::Serialize;
+use std::collections::HashMap;
+use std::sync::OnceLock;
+
+use crate::api::Result;
+
+#[derive(Debug, Clone, Serialize)]
+pub struct SystemFontFamily {
+    pub family: String,
+    pub monospaced: bool,
+}
+
+/// Scanning every installed face costs a few hundred milliseconds, and the
+/// collection only changes between sessions, so it is read once per process.
+static SYSTEM_FONTS: OnceLock<Vec<SystemFontFamily>> = OnceLock::new();
+
+type FontFamilies = [(String, fontdb::Language)];
+
+/// fontdb lists the English US family first when the font has one, but the
+/// lookup is explicit so a face with an unusual name table still resolves to
+/// the name the webview matches against.
+fn english_family_name(families: &FontFamilies) -> Option<&str> {
+    families
+        .iter()
+        .find(|(_, language)| {
+            *language == fontdb::Language::English_UnitedStates
+        })
+        .or_else(|| families.first())
+        .map(|(name, _)| name.trim())
+        .filter(|name| !name.is_empty())
+}
+
+#[derive(Default)]
+struct FamilyAccumulator {
+    families: HashMap<String, bool>,
+}
+
+impl FamilyAccumulator {
+    fn add(&mut self, families: &FontFamilies, monospaced: bool) {
+        let Some(name) = english_family_name(families) else {
+            return;
+        };
+
+        self.families
+            .entry(name.to_owned())
+            .and_modify(|flag| *flag |= monospaced)
+            .or_insert(monospaced);
+    }
+
+    fn into_sorted_families(self) -> Vec<SystemFontFamily> {
+        let mut families: Vec<SystemFontFamily> = self
+            .families
+            .into_iter()
+            .map(|(family, monospaced)| SystemFontFamily { family, monospaced })
+            .collect();
+        families.sort_by_cached_key(|entry| entry.family.to_lowercase());
+        families
+    }
+}
+
+fn collect_system_fonts() -> Vec<SystemFontFamily> {
+    let mut database = fontdb::Database::new();
+    database.load_system_fonts();
+
+    let mut accumulator = FamilyAccumulator::default();
+    for face in database.faces() {
+        accumulator.add(&face.families, face.monospaced);
+    }
+
+    accumulator.into_sorted_families()
+}
+
+#[tauri::command]
+pub async fn fonts_get_system_fonts() -> Result<Vec<SystemFontFamily>> {
+    if let Some(fonts) = SYSTEM_FONTS.get() {
+        return Ok(fonts.clone());
+    }
+
+    let fonts = tauri::async_runtime::spawn_blocking(collect_system_fonts)
+        .await
+        .map_err(std::io::Error::other)?;
+
+    // A concurrent caller may have won the race; the scan is deterministic.
+    Ok(SYSTEM_FONTS.get_or_init(|| fonts).clone())
+}
+
+pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
+    tauri::plugin::Builder::new("fonts")
+        .invoke_handler(tauri::generate_handler![fonts_get_system_fonts])
+        .build()
+}

apps/app/src/api/instance/mod.rs

@@ -25,6 +25,21 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
     tauri::plugin::Builder::new("instance")
         .invoke_handler(tauri::generate_handler![
             instance_remove,
+            instance_get_backup_repository_status,
+            instance_move_backup_repository,
+            instance_get_backup_config,
+            instance_normalize_backup_exclusion,
+            instance_enable_backups,
+            instance_update_backup_exclusions,
+            instance_disable_backups,
+            instance_start_backup,
+            instance_cancel_backup,
+            instance_list_backup_operations,
+            instance_list_backups,
+            instance_delete_backup,
+            instance_get_backup_restore_preview,
+            instance_restore_backup,
+            instance_get_backup_delete_summary,
             instance_create_direct_link,
             instance_sync_direct_links,
             instance_get,
@@ -120,6 +135,33 @@ pub fn init<R: tauri::Runtime>() -> tauri::plugin::TauriPlugin<R> {
             instance_export_screenshots,
             instance_move_screenshots,
             instance_open_screenshot,
+            instance_get_synced_options,
+            instance_get_initialized_synced_options,
+            instance_get_synced_options_overview,
+            instance_get_synced_option_capabilities,
+            instance_get_synced_option_join_preview,
+            instance_set_synced_option,
+            instance_set_instance_synced_option,
+            instance_get_synced_command_history,
+            instance_set_synced_command_history,
+            instance_list_synced_servers,
+            instance_update_synced_server,
+            instance_remove_synced_server,
+            instance_get_synced_game_options_config,
+            instance_preview_synced_game_option_changes,
+            instance_save_synced_game_option_changes,
+            instance_list_game_options_sync_sources,
+            instance_get_game_setting_locale_labels,
+            instance_get_local_game_options_config,
+            instance_preview_local_game_option_changes,
+            instance_save_local_game_option_changes,
+            instance_get_pack_sync_preview,
+            instance_sync_pack,
+            instance_desync_pack,
+            instance_list_synced_packs,
+            instance_upload_synced_pack,
+            instance_set_synced_pack_enabled,
+            instance_remove_synced_pack,
         ])
         .build()
 }
@@ -163,6 +205,7 @@ pub struct Instance {
     pub linked_version_id: Option<String>,
     pub linked_version_json_path: Option<String>,
     pub linked_game_dir_mode: Option<String>,
+    pub synced_options: theseus::instance::InstanceSyncedOptions,
 }
 
 #[derive(Deserialize, Debug, Clone)]
@@ -347,6 +390,7 @@ impl From<InstanceMetadata> for Instance {
                 .instance
                 .linked_version_json_path,
             linked_game_dir_mode: metadata.instance.linked_game_dir_mode,
+            synced_options: metadata.synced_options,
         }
     }
 }
@@ -478,27 +522,51 @@ fn edit_to_core(edit_instance: EditInstance) -> Result<CoreEditInstance> {
                 None => Ok(CoreInstanceLink::Unmanaged),
             })
             .transpose()?,
-        launch_overrides: Some(InstanceLaunchOverridesPatch {
+        launch_overrides: {
-            player: None,
+            let has_launch_change = edit_instance.java_path.is_some()
-            instance_mode: None,
+                || edit_instance.extra_launch_args.is_some()
-            java_path: edit_instance.java_path,
+                || edit_instance.custom_env_vars.is_some()
-            extra_launch_args: edit_instance.extra_launch_args,
+                || edit_instance.memory.is_some()
-            custom_env_vars: edit_instance.custom_env_vars,
+                || edit_instance.force_fullscreen.is_some()
-            memory: edit_instance.memory,
+                || edit_instance.maximize_window.is_some()
-            force_fullscreen: edit_instance.force_fullscreen,
+                || edit_instance.game_resolution.is_some()
-            maximize_window: edit_instance.maximize_window,
+                || edit_instance.launch_preparation_timeout.is_some()
-            game_resolution: edit_instance.game_resolution,
+                || edit_instance.hooks.is_some();
-            launch_preparation_timeout: edit_instance
+            if has_launch_change {
-                .launch_preparation_timeout,
+                Some(InstanceLaunchOverridesPatch {
-            hooks: edit_instance.hooks,
+                    player: None,
-        }),
+                    instance_mode: None,
-        content_set_patch: Some(AppliedContentSetPatch {
+                    java_path: edit_instance.java_path,
-            source_kind: None,
+                    extra_launch_args: edit_instance.extra_launch_args,
-            game_version: edit_instance.game_version,
+                    custom_env_vars: edit_instance.custom_env_vars,
-            protocol_version: Some(None),
+                    memory: edit_instance.memory,
-            loader: edit_instance.loader,
+                    force_fullscreen: edit_instance.force_fullscreen,
-            loader_version: edit_instance.loader_version,
+                    maximize_window: edit_instance.maximize_window,
-        }),
+                    game_resolution: edit_instance.game_resolution,
+                    launch_preparation_timeout: edit_instance
+                        .launch_preparation_timeout,
+                    hooks: edit_instance.hooks,
+                })
+            } else {
+                None
+            }
+        },
+        content_set_patch: {
+            let has_content_change = edit_instance.game_version.is_some()
+                || edit_instance.loader.is_some()
+                || edit_instance.loader_version.is_some();
+            if has_content_change {
+                Some(AppliedContentSetPatch {
+                    source_kind: None,
+                    game_version: edit_instance.game_version,
+                    protocol_version: Some(None),
+                    loader: edit_instance.loader,
+                    loader_version: edit_instance.loader_version,
+                })
+            } else {
+                None
+            }
+        },
         last_played: None,
         submitted_time_played: None,
         recent_time_played: None,
@@ -1675,3 +1743,361 @@ pub async fn instance_open_screenshot<R: tauri::Runtime>(
         .map_err(|e| std::io::Error::other(e.to_string()))?;
     Ok(())
 }
+
+// ===== 实例备份命令（移植自 Axolotl） =====
+
+#[tauri::command]
+pub async fn instance_get_backup_repository_status()
+-> Result<theseus::instance::BackupRepositoryStatus> {
+    Ok(theseus::instance::get_backup_repository_status().await?)
+}
+
+#[tauri::command]
+pub async fn instance_move_backup_repository(
+    destination: PathBuf,
+) -> Result<uuid::Uuid> {
+    Ok(theseus::instance::move_backup_repository(destination).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_backup_config(
+    instance_id: &str,
+) -> Result<theseus::instance::InstanceBackupConfig> {
+    Ok(theseus::instance::get_backup_config(instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_normalize_backup_exclusion(
+    instance_id: &str,
+    selected_path: PathBuf,
+    kind: theseus::instance::BackupExclusionKind,
+) -> Result<theseus::instance::BackupExclusion> {
+    Ok(theseus::instance::get_backup_exclusion_from_path(
+        instance_id,
+        selected_path,
+        kind,
+    )
+    .await?)
+}
+
+#[tauri::command]
+pub async fn instance_enable_backups(
+    instance_id: &str,
+    excluded_paths: Vec<theseus::instance::BackupExclusion>,
+) -> Result<theseus::instance::InstanceBackupConfig> {
+    Ok(theseus::instance::enable_backups(instance_id, excluded_paths).await?)
+}
+
+#[tauri::command]
+pub async fn instance_update_backup_exclusions(
+    instance_id: &str,
+    excluded_paths: Vec<theseus::instance::BackupExclusion>,
+) -> Result<theseus::instance::InstanceBackupConfig> {
+    Ok(
+        theseus::instance::update_backup_exclusions(
+            instance_id,
+            excluded_paths,
+        )
+        .await?,
+    )
+}
+
+#[tauri::command]
+pub async fn instance_disable_backups(instance_id: &str) -> Result<()> {
+    Ok(theseus::instance::disable_backups(instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_start_backup(instance_id: String) -> Result<uuid::Uuid> {
+    Ok(theseus::instance::start_backup_snapshot(instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_cancel_backup(operation_id: uuid::Uuid) -> Result<bool> {
+    Ok(theseus::instance::cancel_backup(operation_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_list_backup_operations(
+    instance_id: Option<String>,
+    active_only: bool,
+) -> Result<Vec<theseus::instance::BackupOperation>> {
+    Ok(theseus::instance::list_backup_operations(
+        instance_id.as_deref(),
+        active_only,
+    )
+    .await?)
+}
+
+#[tauri::command]
+pub async fn instance_list_backups(
+    instance_id: &str,
+) -> Result<Vec<theseus::instance::BackupSnapshot>> {
+    Ok(theseus::instance::list_backup_snapshots(instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_delete_backup(snapshot_id: &str) -> Result<()> {
+    Ok(theseus::instance::delete_backup_snapshot(snapshot_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_backup_restore_preview(
+    snapshot_id: &str,
+) -> Result<uuid::Uuid> {
+    Ok(theseus::instance::get_backup_restore_preview(snapshot_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_restore_backup(
+    snapshot_id: &str,
+    plan_token: &str,
+) -> Result<uuid::Uuid> {
+    Ok(theseus::instance::restore_snapshot(snapshot_id, plan_token).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_backup_delete_summary(
+    instance_id: &str,
+) -> Result<theseus::instance::BackupDeleteSummary> {
+    Ok(theseus::instance::get_backup_delete_summary(instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_options()
+-> Result<theseus::instance::GlobalSyncedOptions> {
+    Ok(theseus::instance::get_global_synced_options().await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_initialized_synced_options()
+-> Result<theseus::instance::GlobalSyncedOptions> {
+    Ok(theseus::instance::get_initialized_synced_options().await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_game_options_config()
+-> Result<theseus::instance::GameSettingsEditorState> {
+    Ok(theseus::instance::get_synced_game_options_config().await?)
+}
+
+#[tauri::command]
+pub async fn instance_preview_synced_game_option_changes(
+    request: theseus::instance::UpdateGameSettingsRequest,
+) -> Result<theseus::instance::GameSettingsEditorState> {
+    Ok(theseus::instance::preview_synced_game_option_changes(request).await?)
+}
+
+#[tauri::command]
+pub async fn instance_save_synced_game_option_changes(
+    request: theseus::instance::UpdateGameSettingsRequest,
+) -> Result<theseus::instance::SaveGameSettingsResult> {
+    Ok(theseus::instance::save_synced_game_option_changes(request).await?)
+}
+
+#[tauri::command]
+pub async fn instance_list_game_options_sync_sources()
+-> Result<Vec<theseus::instance::GameOptionsSourceCandidate>> {
+    Ok(theseus::instance::list_game_options_sync_sources().await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_game_setting_locale_labels(
+    instance_id: Option<String>,
+    locale: String,
+    option_ids: Vec<String>,
+    refresh_sources: bool,
+) -> Result<theseus::instance::GameSettingLocaleLabels> {
+    Ok(theseus::instance::get_game_setting_locale_labels(
+        instance_id.as_deref(),
+        &locale,
+        option_ids,
+        refresh_sources,
+    )
+    .await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_local_game_options_config(
+    instance_id: String,
+) -> Result<theseus::instance::GameSettingsEditorState> {
+    Ok(theseus::instance::get_local_game_options_config(&instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_preview_local_game_option_changes(
+    instance_id: String,
+    request: theseus::instance::UpdateGameSettingsRequest,
+) -> Result<theseus::instance::GameSettingsEditorState> {
+    Ok(theseus::instance::preview_local_game_option_changes(
+        &instance_id,
+        request,
+    )
+    .await?)
+}
+
+#[tauri::command]
+pub async fn instance_save_local_game_option_changes(
+    instance_id: String,
+    request: theseus::instance::UpdateGameSettingsRequest,
+) -> Result<theseus::instance::SaveGameSettingsResult> {
+    Ok(
+        theseus::instance::save_local_game_option_changes(
+            &instance_id,
+            request,
+        )
+        .await?,
+    )
+}
+
+#[tauri::command]
+pub async fn instance_get_pack_sync_preview(
+    instance_id: String,
+    project_path: String,
+) -> Result<theseus::instance::PackSyncPreview> {
+    Ok(
+        theseus::instance::get_pack_sync_preview(&instance_id, &project_path)
+            .await?,
+    )
+}
+
+#[tauri::command]
+pub async fn instance_sync_pack(
+    instance_id: String,
+    project_path: String,
+) -> Result<()> {
+    Ok(theseus::instance::sync_pack(&instance_id, &project_path).await?)
+}
+
+#[tauri::command]
+pub async fn instance_desync_pack(
+    instance_id: String,
+    pack_id: String,
+    mode: theseus::instance::DesyncServerMode,
+) -> Result<()> {
+    Ok(theseus::instance::desync_pack(&instance_id, &pack_id, mode).await?)
+}
+
+#[tauri::command]
+pub async fn instance_list_synced_packs(
+    project_type: theseus::data::ProjectType,
+) -> Result<Vec<theseus::data::ContentItem>> {
+    Ok(theseus::instance::list_synced_packs(project_type).await?)
+}
+
+#[tauri::command]
+pub async fn instance_upload_synced_pack(
+    path: PathBuf,
+    project_type: theseus::data::ProjectType,
+    game_versions: Vec<String>,
+) -> Result<()> {
+    Ok(
+        theseus::instance::upload_synced_pack(
+            path,
+            project_type,
+            game_versions,
+        )
+        .await?,
+    )
+}
+
+#[tauri::command]
+pub async fn instance_set_synced_pack_enabled(
+    pack_id: String,
+    enabled: bool,
+) -> Result<()> {
+    Ok(theseus::instance::set_synced_pack_enabled(&pack_id, enabled).await?)
+}
+
+#[tauri::command]
+pub async fn instance_remove_synced_pack(pack_id: String) -> Result<()> {
+    Ok(theseus::instance::remove_synced_pack(&pack_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_options_overview(
+    instance_id: String,
+) -> Result<theseus::instance::SyncedOptionsOverview> {
+    Ok(theseus::instance::get_synced_options_overview(&instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_option_capabilities(
+    instance_id: String,
+) -> Result<Vec<theseus::instance::SyncedOptionCapability>> {
+    Ok(theseus::instance::get_synced_option_capabilities(&instance_id).await?)
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_option_join_preview(
+    instance_id: String,
+    option: theseus::instance::SyncedOption,
+) -> Result<theseus::instance::SyncedOptionJoinPreview> {
+    Ok(
+        theseus::instance::get_synced_option_join_preview(&instance_id, option)
+            .await?,
+    )
+}
+
+#[tauri::command]
+pub async fn instance_set_synced_option(
+    option: theseus::instance::SyncedOption,
+    enabled: bool,
+    base_instance_id: Option<String>,
+) -> Result<theseus::instance::GlobalSyncedOptions> {
+    Ok(theseus::instance::set_global_synced_option(
+        option,
+        enabled,
+        base_instance_id.as_deref(),
+    )
+    .await?)
+}
+
+#[tauri::command]
+pub async fn instance_set_instance_synced_option(
+    instance_id: String,
+    option: theseus::instance::SyncedOption,
+    enabled: bool,
+    resolution: Option<theseus::instance::SyncedOptionJoinResolution>,
+) -> Result<Instance> {
+    let metadata = theseus::instance::set_instance_synced_option(
+        &instance_id,
+        option,
+        enabled,
+        resolution,
+    )
+    .await?;
+    instance_from_metadata(metadata).await
+}
+
+#[tauri::command]
+pub async fn instance_get_synced_command_history() -> Result<String> {
+    Ok(theseus::instance::get_synced_command_history().await?)
+}
+
+#[tauri::command]
+pub async fn instance_set_synced_command_history(
+    contents: String,
+) -> Result<String> {
+    Ok(theseus::instance::set_synced_command_history(&contents).await?)
+}
+
+#[tauri::command]
+pub async fn instance_list_synced_servers()
+-> Result<Vec<theseus::instance::SyncedServer>> {
+    Ok(theseus::instance::list_synced_servers().await?)
+}
+
+#[tauri::command]
+pub async fn instance_update_synced_server(
+    server: theseus::instance::SyncedServer,
+) -> Result<()> {
+    theseus::instance::update_synced_server(server).await?;
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn instance_remove_synced_server(id: String) -> Result<()> {
+    theseus::instance::remove_synced_server(&id).await?;
+    Ok(())
+}

apps/app/src/api/mod.rs

@@ -36,6 +36,7 @@ pub mod curseforge;
 pub mod datapacks;
 pub mod drop;
 pub mod files;
+pub mod fonts;
 pub mod friends;
 pub mod worlds;
 

apps/app/src/api/settings.rs

@@ -33,7 +33,9 @@ pub async fn settings_set(
     app: tauri::AppHandle<impl Runtime>,
     settings: Settings,
 ) -> Result<()> {
-    settings::set(settings).await?;
+    settings::set(settings.clone()).await?;
+    let state = State::get().await?;
+    state.update_http_client_for_settings(&settings).await?;
     let _ = app.emit("settings", ());
     Ok(())
 }

apps/app/src/main.rs

@@ -947,6 +947,7 @@ fn main() {
         .plugin(api::datapacks::init())
         .plugin(api::drop::init())
         .plugin(api::files::init())
+        .plugin(api::fonts::init())
         .plugin(api::friends::init())
         .plugin(api::worlds::init())
         .plugin(api::terracotta::init())

apps/app/src/updater_impl.rs

@@ -1,5 +1,6 @@
 use crate::api::Result;
 use futures::StreamExt;
+use semver::Version;
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 use std::sync::{Arc, Mutex};
@@ -26,6 +27,82 @@ const STARLIGHT_UPDATE_BASE_URL: &str = "https://skin.starlight.cool/";
 const UPDATE_DOWNLOAD_TIMEOUT: std::time::Duration =
     std::time::Duration::from_secs(15 * 60);
 
+// semver compares prerelease identifiers lexically, so "beta10" < "beta9"
+// (because the character '1' sorts before '9'). Our release names use a
+// "betaN" scheme where N is a decimal counter, so a strict lexical compare
+// would wrongly report an older beta as the latest. Use a comparator that
+// treats the trailing digits of a prerelease identifier numerically.
+fn is_remote_newer(current: &Version, remote: &Version) -> bool {
+    use std::cmp::Ordering;
+
+    let core = (remote.major, remote.minor, remote.patch).cmp(&(
+        current.major,
+        current.minor,
+        current.patch,
+    ));
+    if core != Ordering::Equal {
+        return core == Ordering::Greater;
+    }
+
+    // Same x.y.z. A final release outranks any prerelease of that version.
+    match (current.pre.is_empty(), remote.pre.is_empty()) {
+        (true, true) => false,
+        (true, false) => false,
+        (false, true) => true,
+        (false, false) => {
+            compare_prerelease(remote.pre.as_str(), current.pre.as_str())
+                == Ordering::Greater
+        }
+    }
+}
+
+/// Split a prerelease identifier into its non-digit prefix and an optional
+/// trailing decimal number (so "beta10" -> ("beta", Some(10))).
+fn split_prerelease_identifier(segment: &str) -> (&str, Option<u64>) {
+    let digit_start = segment
+        .char_indices()
+        .find(|(_, c)| c.is_ascii_digit())
+        .map(|(i, _)| i);
+    match digit_start {
+        Some(i) => (&segment[..i], segment[i..].parse::<u64>().ok()),
+        None => (segment, None),
+    }
+}
+
+/// Compare two prerelease strings, treating a trailing run of ASCII digits
+/// as a decimal number (so "beta10" > "beta9"). All other segments fall back
+/// to a plain lexical comparison.
+fn compare_prerelease(left: &str, right: &str) -> std::cmp::Ordering {
+    use std::cmp::Ordering;
+
+    let left_segments: Vec<&str> = left.split('.').collect();
+    let right_segments: Vec<&str> = right.split('.').collect();
+
+    for (l, r) in left_segments.iter().zip(right_segments.iter()) {
+        let (l_prefix, l_num) = split_prerelease_identifier(l);
+        let (r_prefix, r_num) = split_prerelease_identifier(r);
+
+        match (l_num, r_num) {
+            (Some(ln), Some(rn)) if l_prefix == r_prefix => match ln.cmp(&rn) {
+                Ordering::Equal => continue,
+                other => return other,
+            },
+            _ => {
+                let prefix_cmp = l_prefix.cmp(r_prefix);
+                if prefix_cmp != Ordering::Equal {
+                    return prefix_cmp;
+                }
+                let num_cmp = l_num.cmp(&r_num);
+                if num_cmp != Ordering::Equal {
+                    return num_cmp;
+                }
+            }
+        }
+    }
+
+    left_segments.len().cmp(&right_segments.len())
+}
+
 // ── Shared types ─────────────────────────────────────────────────
 
 #[derive(Serialize)]
@@ -228,7 +305,10 @@ async fn check_with_endpoints<R: Runtime>(
         .header("Accept", "application/json")?
         .header("X-Axolotl-Channel", channel)?
         .header("X-Axolotl-Platform", platform)?
-        .header("X-Axolotl-Version", current_version)?;
+        .header("X-Axolotl-Version", current_version)?
+        .version_comparator(|current, release| {
+            is_remote_newer(&current, &release.version)
+        });
 
     #[cfg(target_os = "windows")]
     {

apps/website/releases/catalog.json

@@ -1,6 +1,163 @@
 {
-  "updated_at": "2026-10-01T05:02:05.765Z",
+  "updated_at": "2026-10-03T07:08:29.010Z",
   "announcements": [
+    {
+      "id": "launcher-1.0.1",
+      "version": "1.0.1",
+      "publishedAt": "2026-10-03",
+      "title": {
+        "en-US": "Starlight Launcher 1.0.1",
+        "zh-CN": "Starlight Launcher 1.0.1"
+      },
+      "changes": {
+        "added": [
+          {
+            "en-US": "Instance backups: create deduplicated snapshots of an instance while it is closed, preview and restore them, exclude specific files or folders, and move the backup repository.",
+            "zh-CN": "实例备份：在实例关闭时创建去重快照，可预览与恢复，支持排除指定文件或文件夹，并可迁移备份仓库。"
+          },
+          {
+            "en-US": "Customize the launcher's UI font and monospace font in appearance settings.",
+            "zh-CN": "在外观设置中自定义启动器界面字体与等宽字体。"
+          }
+        ],
+        "fixed": [
+          {
+            "en-US": "Fixed beta builds not auto-updating from beta9 to beta10 (prerelease versions were compared as text instead of by number).",
+            "zh-CN": "修复 beta 版本无法从 beta9 自动更新到 beta10 的问题（预发布版本此前按文本而非数字比较）。"
+          },
+          {
+            "en-US": "Fixed a cross-crate visibility issue that prevented the launcher from compiling with the ignore-SSL-errors option.",
+            "zh-CN": "修复因跨 crate 可见性导致的编译失败，此前启用“忽略 SSL 证书错误”选项时无法编译。"
+          }
+        ]
+      }
+    },
+    {
+      "id": "launcher-1.0.1-beta10",
+      "version": "1.0.1-beta10",
+      "publishedAt": "2026-10-02",
+      "title": {
+        "en-US": "Starlight Launcher 1.0.1-beta10",
+        "zh-CN": "Starlight Launcher 1.0.1-beta10"
+      },
+      "changes": {
+        "added": [
+          {
+            "en-US": "Reworked the instance-page tour into four steps covering content, files, worlds, and logs.",
+            "zh-CN": "重做实例页导览，分为内容、文件、世界、日志四步。"
+          },
+          {
+            "en-US": "When the install location is a drive root, the installer now creates a Starlight subfolder automatically.",
+            "zh-CN": "安装位置选到盘符根目录时，安装器会自动创建 Starlight 子文件夹。"
+          }
+        ],
+        "fixed": [
+          {
+            "en-US": "Fixed the launcher UI scale reverting after a restart.",
+            "zh-CN": "修复启动器界面缩放重启后恢复原状的问题。"
+          },
+          {
+            "en-US": "Fixed developer feature flags not saving.",
+            "zh-CN": "修复开发者功能开关无法保存的问题。"
+          },
+          {
+            "en-US": "Fixed instance group edits not saving for instances without an applied content set.",
+            "zh-CN": "修复没有应用内容集的实例无法保存分组修改的问题。"
+          },
+          {
+            "en-US": "Fixed the launcher crashing on startup when feature flags were out of sync between the frontend and backend.",
+            "zh-CN": "修复前后端功能开关不同步导致启动器启动崩溃的问题。"
+          },
+          {
+            "en-US": "Fixed being unable to copy text inside the embedded skin site.",
+            "zh-CN": "修复内嵌皮肤站中无法复制文本的问题。"
+          },
+          {
+            "en-US": "Fixed the onboarding prompt not dismissing when clicking anywhere.",
+            "zh-CN": "修复导览提示点击任意位置无法关闭的问题。"
+          }
+        ]
+      }
+    },
+    {
+      "id": "launcher-1.0.1-beta9",
+      "version": "1.0.1-beta9",
+      "publishedAt": "2026-10-02",
+      "title": {
+        "en-US": "Starlight Launcher 1.0.1-beta9",
+        "zh-CN": "Starlight Launcher 1.0.1-beta9"
+      },
+      "changes": {
+        "fixed": [
+          {
+            "en-US": "Fixed a crash on the minimal home layout caused by an unrecognized multiplayer feature flag (missing backend enum variant).",
+            "zh-CN": "修复多人联机功能开关缺少后端枚举变体、导致精简主页报错的问题。"
+          }
+        ]
+      }
+    },
+    {
+      "id": "launcher-1.0.1-beta8",
+      "version": "1.0.1-beta8",
+      "publishedAt": "2026-10-02",
+      "title": {
+        "en-US": "Starlight Launcher 1.0.1-beta8",
+        "zh-CN": "Starlight Launcher 1.0.1-beta8"
+      },
+      "changes": {
+        "fixed": [
+          {
+            "en-US": "Fixed the sidebar navigation entries breaking after the screenshot center was added.",
+            "zh-CN": "修复添加截图中心后侧边栏导航项损坏的问题。"
+          },
+          {
+            "en-US": "Fixed being unable to install the StarLight hosted pack even after signing in (missing command permission).",
+            "zh-CN": "修复登录后仍无法安装 StarLight 实例的问题（命令权限缺失）。"
+          },
+          {
+            "en-US": "Fixed the launcher UI scaling not applying when changed (missing command permission).",
+            "zh-CN": "修复修改启动器界面缩放后不生效的问题（命令权限缺失）。"
+          },
+          {
+            "en-US": "Fixed several screenshot center actions failing due to missing command permissions.",
+            "zh-CN": "修复截图中心部分操作因命令权限缺失而失败的问题。"
+          }
+        ]
+      }
+    },
+    {
+      "id": "launcher-1.0.1-beta7",
+      "version": "1.0.1-beta7",
+      "publishedAt": "2026-10-02",
+      "title": {
+        "en-US": "Starlight Launcher 1.0.1-beta7",
+        "zh-CN": "Starlight Launcher 1.0.1-beta7"
+      },
+      "changes": {
+        "added": [
+          {
+            "en-US": "Added a screenshot center: browse screenshots across every instance, group them (custom groups, by instance, or by date), preview, edit (crop, rotate, annotate, censor), and export as ZIP.",
+            "zh-CN": "新增截图中心：跨实例浏览截图，支持自定义/按实例/按日期分组，可预览、编辑（裁剪、标注、打码等）并导出为 ZIP。"
+          },
+          {
+            "en-US": "Added the multiplayer (Terracotta) entry to the sidebar, behind a feature flag.",
+            "zh-CN": "侧边栏新增多人联机（陶瓦）入口，由功能开关控制。"
+          }
+        ],
+        "changed": [
+          {
+            "en-US": "Launcher UI scaling is now persisted in the backend and applied via native webview zoom, so it scales embedded pages correctly and keeps onboarding anchors aligned.",
+            "zh-CN": "启动器界面缩放改为后端持久化，并通过原生 webview 缩放应用，可正确缩放内嵌页面且导览锚点不再偏移。"
+          }
+        ],
+        "fixed": [
+          {
+            "en-US": "Fixed the onboarding tour skipping its first step when the target anchor was missing.",
+            "zh-CN": "修复导览首步在目标锚点缺失时被自动跳过的问题。"
+          }
+        ]
+      }
+    },
     {
       "id": "launcher-1.0.1-beta6",
       "version": "1.0.1-beta6",

apps/website/releases/latest.json

@@ -1,32 +1,32 @@
 {
-  "tag_name": "v1.0.0",
+  "tag_name": "v1.0.1",
   "assets": [
-    "Axolotl_Launcher_1.0.0_x64_modern-setup.exe",
+    "Axolotl_Launcher_1.0.1_x64_modern-setup.exe",
-    "Axolotl_Launcher_1.0.0_x64_modern-setup.exe.sig",
+    "Axolotl_Launcher_1.0.1_x64_modern-setup.exe.sig",
-    "Axolotl_Launcher_1.0.0_x64_nsis-setup.exe",
+    "Axolotl_Launcher_1.0.1_x64_nsis-setup.exe",
-    "Axolotl_Launcher_1.0.0_x64_nsis-setup.exe.sig",
+    "Axolotl_Launcher_1.0.1_x64_nsis-setup.exe.sig",
-    "Axolotl_Launcher_1.0.0_x64_portable.zip",
+    "Axolotl_Launcher_1.0.1_x64_portable.zip",
-    "Starlight.Launcher-1.0.0-1.aarch64.rpm",
+    "Starlight.Launcher-1.0.1-1.aarch64.rpm",
-    "Starlight.Launcher-1.0.0-1.aarch64.rpm.sig",
+    "Starlight.Launcher-1.0.1-1.aarch64.rpm.sig",
-    "Starlight.Launcher-1.0.0-1.x86_64.rpm",
+    "Starlight.Launcher-1.0.1-1.x86_64.rpm",
-    "Starlight.Launcher-1.0.0-1.x86_64.rpm.sig",
+    "Starlight.Launcher-1.0.1-1.x86_64.rpm.sig",
-    "Starlight.Launcher_1.0.0_aarch64.AppImage",
+    "Starlight.Launcher_1.0.1_aarch64.AppImage",
-    "Starlight.Launcher_1.0.0_aarch64.AppImage.sig",
+    "Starlight.Launcher_1.0.1_aarch64.AppImage.sig",
-    "Starlight.Launcher_1.0.0_aarch64.AppImage.tar.gz",
+    "Starlight.Launcher_1.0.1_aarch64.AppImage.tar.gz",
-    "Starlight.Launcher_1.0.0_aarch64.AppImage.tar.gz.sig",
+    "Starlight.Launcher_1.0.1_aarch64.AppImage.tar.gz.sig",
-    "Starlight.Launcher_1.0.0_amd64.AppImage",
+    "Starlight.Launcher_1.0.1_amd64.AppImage",
-    "Starlight.Launcher_1.0.0_amd64.AppImage.sig",
+    "Starlight.Launcher_1.0.1_amd64.AppImage.sig",
-    "Starlight.Launcher_1.0.0_amd64.AppImage.tar.gz",
+    "Starlight.Launcher_1.0.1_amd64.AppImage.tar.gz",
-    "Starlight.Launcher_1.0.0_amd64.AppImage.tar.gz.sig",
+    "Starlight.Launcher_1.0.1_amd64.AppImage.tar.gz.sig",
-    "Starlight.Launcher_1.0.0_amd64.deb",
+    "Starlight.Launcher_1.0.1_amd64.deb",
-    "Starlight.Launcher_1.0.0_amd64.deb.sig",
+    "Starlight.Launcher_1.0.1_amd64.deb.sig",
-    "Starlight.Launcher_1.0.0_arm64.deb",
+    "Starlight.Launcher_1.0.1_arm64.deb",
-    "Starlight.Launcher_1.0.0_arm64.deb.sig",
+    "Starlight.Launcher_1.0.1_arm64.deb.sig",
-    "Starlight.Launcher_1.0.0_universal.dmg",
+    "Starlight.Launcher_1.0.1_universal.dmg",
-    "Starlight.Launcher_1.0.0_x64-setup.exe",
+    "Starlight.Launcher_1.0.1_x64-setup.exe",
-    "Starlight.Launcher_1.0.0_x64-setup.exe.sig",
+    "Starlight.Launcher_1.0.1_x64-setup.exe.sig",
-    "Starlight.Launcher_1.0.0_x64-setup.nsis.zip",
+    "Starlight.Launcher_1.0.1_x64-setup.nsis.zip",
-    "Starlight.Launcher_1.0.0_x64-setup.nsis.zip.sig",
+    "Starlight.Launcher_1.0.1_x64-setup.nsis.zip.sig",
     "Starlight.Launcher_universal.app.tar.gz",
     "Starlight.Launcher_universal.app.tar.gz.sig"
   ]

packages/app-lib/.sqlx/query-52d2d61ed9239875d6188417f74bbde439c49582e1e81f5acb7b52d769a1bc18.json

@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "\n            SELECT\n                max_concurrent_writes, max_concurrent_downloads,\n                auto_concurrent_downloads, minecraft_metadata_source,\n                minecraft_file_source, modrinth_source, curseforge_source, mojang_auth_source,\n                theme, locale, default_page, collapsed_navigation, hide_nametag_skins_page, advanced_rendering, native_decorations,\n\t\t\t\tdiscord_rpc, developer_mode, telemetry, telemetry_consent_version, personalized_ads,\n                onboarded, onboarding_version, onboarding_instance_tour_completed,\n                json(extra_launch_args) extra_launch_args, json(custom_env_vars) custom_env_vars,\n                mc_memory_max, mc_memory_auto, mc_force_fullscreen, mc_maximize_window, mc_game_resolution_x, mc_game_resolution_y, hide_on_process_start, enter_lightweight_mode_on_game_launch,\n                auto_set_java_high_performance_mode,\n                hook_pre_launch, hook_wrapper, hook_post_exit,\n                custom_dir, prev_custom_dir, migrated, json(feature_flags) feature_flags, toggle_sidebar,\n                skipped_update, pending_update_toast_for_version, auto_download_updates, accent_color,\n                custom_background_path, custom_background_blur, custom_background_opacity,\n                transparent_background, transparent_background_opacity, transparent_background_blur,\n                sidebar_instance_count, home_layout, minimal_home_instance_id,\n                json(home_widgets) as \"home_widgets?: String\", auto_hide_downloads_button,\n                json(terracotta_public_nodes) terracotta_public_nodes,\n                ui_scale,\n                version\n            FROM settings\n            ",
+  "query": "\n            SELECT\n                max_concurrent_writes, max_concurrent_downloads,\n                auto_concurrent_downloads, minecraft_metadata_source,\n                minecraft_file_source, modrinth_source, curseforge_source, mojang_auth_source,\n                theme, locale, default_page, collapsed_navigation, hide_nametag_skins_page, advanced_rendering, native_decorations,\n\t\t\t\tdiscord_rpc, developer_mode, telemetry, telemetry_consent_version, personalized_ads,\n                onboarded, onboarding_version, onboarding_instance_tour_completed,\n                json(extra_launch_args) extra_launch_args, json(custom_env_vars) custom_env_vars,\n                mc_memory_max, mc_memory_auto, mc_force_fullscreen, mc_maximize_window, mc_game_resolution_x, mc_game_resolution_y, hide_on_process_start, enter_lightweight_mode_on_game_launch,\n                auto_set_java_high_performance_mode,\n                hook_pre_launch, hook_wrapper, hook_post_exit,\n                custom_dir, prev_custom_dir, migrated, json(feature_flags) feature_flags, toggle_sidebar,\n                skipped_update, pending_update_toast_for_version, auto_download_updates, accent_color,\n                custom_background_path, custom_background_blur, custom_background_opacity,\n                transparent_background, transparent_background_opacity, transparent_background_blur,\n                sidebar_instance_count, home_layout, minimal_home_instance_id,\n                json(home_widgets) as \"home_widgets?: String\", auto_hide_downloads_button,\n                json(terracotta_public_nodes) terracotta_public_nodes,\n                ui_scale,\n                ui_font,\n                backup_repository_path,\n                mono_font,\n                version\n            FROM settings\n            ",
   "describe": {
     "columns": [
       {
@@ -299,8 +299,23 @@
         "type_info": "Float"
       },
       {
-        "name": "version",
+        "name": "ui_font",
         "ordinal": 59,
+        "type_info": "Text"
+      },
+      {
+        "name": "backup_repository_path",
+        "ordinal": 60,
+        "type_info": "Text"
+      },
+      {
+        "name": "mono_font",
+        "ordinal": 61,
+        "type_info": "Text"
+      },
+      {
+        "name": "version",
+        "ordinal": 62,
         "type_info": "Integer"
       }
     ],
@@ -367,8 +382,11 @@
       false,
       null,
       false,
+      null,
+      null,
+      null,
       false
     ]
   },
-  "hash": "a00177609aec1a056ec47d46d4acd6d1a6244434991d3624b70c7734a2ab85c3"
+  "hash": "52d2d61ed9239875d6188417f74bbde439c49582e1e81f5acb7b52d769a1bc18"
-}
+}

packages/app-lib/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "theseus"
 # The actual version is set by the theseus-build workflow on tagging
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 edition.workspace = true
 
 [dependencies]

packages/app-lib/backup_migrations/20260920131000_initial.sql

@@ -0,0 +1,76 @@
+CREATE TABLE repository_meta (
+	id INTEGER PRIMARY KEY CHECK (id = 0),
+	schema_name TEXT NOT NULL,
+	created_at INTEGER NOT NULL
+);
+
+INSERT INTO repository_meta (id, schema_name, created_at)
+VALUES (0, 'axolotl-instance-backups', unixepoch('subsec') * 1000);
+
+CREATE TABLE instance_backup_configs (
+	instance_id TEXT PRIMARY KEY,
+	instance_name TEXT NOT NULL,
+	created_at INTEGER NOT NULL,
+	modified_at INTEGER NOT NULL
+);
+
+CREATE TABLE backup_selections (
+	instance_id TEXT NOT NULL REFERENCES instance_backup_configs(instance_id) ON DELETE CASCADE,
+	path TEXT NOT NULL,
+	PRIMARY KEY (instance_id, path)
+);
+
+CREATE TABLE backup_snapshots (
+	id TEXT PRIMARY KEY,
+	instance_id TEXT NOT NULL REFERENCES instance_backup_configs(instance_id) ON DELETE CASCADE,
+	instance_name TEXT NOT NULL,
+	created_at INTEGER NOT NULL,
+	file_count INTEGER NOT NULL,
+	symlink_count INTEGER NOT NULL,
+	logical_size INTEGER NOT NULL,
+	added_size INTEGER NOT NULL
+);
+
+CREATE INDEX backup_snapshots_instance_created
+	ON backup_snapshots(instance_id, created_at DESC);
+
+CREATE TABLE snapshot_roots (
+	snapshot_id TEXT NOT NULL REFERENCES backup_snapshots(id) ON DELETE CASCADE,
+	path TEXT NOT NULL,
+	existed INTEGER NOT NULL,
+	PRIMARY KEY (snapshot_id, path)
+);
+
+CREATE TABLE backup_objects (
+	hash TEXT PRIMARY KEY,
+	size INTEGER NOT NULL,
+	ref_count INTEGER NOT NULL CHECK (ref_count >= 0)
+);
+
+CREATE TABLE snapshot_entries (
+	snapshot_id TEXT NOT NULL REFERENCES backup_snapshots(id) ON DELETE CASCADE,
+	path TEXT NOT NULL,
+	kind TEXT NOT NULL CHECK (kind IN ('file', 'directory', 'symlink')),
+	object_hash TEXT REFERENCES backup_objects(hash),
+	size INTEGER NOT NULL DEFAULT 0,
+	modified_at INTEGER,
+	unix_mode INTEGER,
+	link_target TEXT,
+	link_is_directory INTEGER,
+	PRIMARY KEY (snapshot_id, path),
+	CHECK ((kind = 'file' AND object_hash IS NOT NULL) OR (kind != 'file' AND object_hash IS NULL)),
+	CHECK ((kind = 'symlink' AND link_target IS NOT NULL) OR (kind != 'symlink' AND link_target IS NULL))
+);
+
+CREATE INDEX snapshot_entries_object_hash
+	ON snapshot_entries(object_hash) WHERE object_hash IS NOT NULL;
+
+CREATE TABLE object_gc_queue (
+	hash TEXT PRIMARY KEY,
+	queued_at INTEGER NOT NULL
+);
+
+CREATE TABLE pending_instance_deletions (
+	instance_id TEXT PRIMARY KEY,
+	marked_at INTEGER NOT NULL
+);

packages/app-lib/backup_migrations/20260920150000_exclusion_rules.sql

@@ -0,0 +1,19 @@
+ALTER TABLE backup_snapshots
+	ADD COLUMN scope_mode TEXT NOT NULL DEFAULT 'included_roots'
+	CHECK (scope_mode IN ('included_roots', 'excluded_paths'));
+
+DROP TABLE backup_selections;
+
+CREATE TABLE backup_exclusions (
+	instance_id TEXT NOT NULL REFERENCES instance_backup_configs(instance_id) ON DELETE CASCADE,
+	path TEXT NOT NULL,
+	kind TEXT NOT NULL CHECK (kind IN ('file', 'directory')),
+	PRIMARY KEY (instance_id, path)
+);
+
+CREATE TABLE snapshot_exclusions (
+	snapshot_id TEXT NOT NULL REFERENCES backup_snapshots(id) ON DELETE CASCADE,
+	path TEXT NOT NULL,
+	kind TEXT NOT NULL CHECK (kind IN ('file', 'directory')),
+	PRIMARY KEY (snapshot_id, path)
+);

packages/app-lib/backup_migrations/20260920200000_operations.sql

@@ -0,0 +1,26 @@
+CREATE TABLE backup_operations (
+	id TEXT PRIMARY KEY,
+	operation_type TEXT NOT NULL
+		CHECK (operation_type IN ('create', 'restore')),
+	instance_id TEXT NOT NULL,
+	snapshot_id TEXT,
+	state TEXT NOT NULL
+		CHECK (state IN (
+			'queued', 'scanning', 'hashing', 'saving', 'validating',
+			'materializing', 'applying', 'completed', 'cancelled', 'failed', 'interrupted'
+		)),
+	processed_bytes INTEGER NOT NULL DEFAULT 0,
+	total_bytes INTEGER NOT NULL DEFAULT 0,
+	cancellable INTEGER NOT NULL DEFAULT 1,
+	error TEXT,
+	created_at INTEGER NOT NULL,
+	updated_at INTEGER NOT NULL,
+	finished_at INTEGER
+);
+
+CREATE INDEX backup_operations_instance_created
+	ON backup_operations(instance_id, created_at DESC);
+
+CREATE INDEX backup_operations_active
+	ON backup_operations(state, updated_at DESC)
+	WHERE state NOT IN ('completed', 'cancelled', 'failed', 'interrupted');

packages/app-lib/backup_migrations/20260920210000_operation_cancellation.sql

@@ -0,0 +1,2 @@
+ALTER TABLE backup_operations
+	ADD COLUMN cancel_requested INTEGER NOT NULL DEFAULT 0;

packages/app-lib/backup_migrations/20260920223000_repository_move_operations.sql

@@ -0,0 +1,45 @@
+PRAGMA foreign_keys = OFF;
+
+CREATE TABLE backup_operations_new (
+	id TEXT PRIMARY KEY,
+	operation_type TEXT NOT NULL
+		CHECK (operation_type IN ('create', 'restore', 'repository_move')),
+	instance_id TEXT NOT NULL,
+	snapshot_id TEXT,
+	state TEXT NOT NULL
+		CHECK (state IN (
+			'queued', 'scanning', 'hashing', 'saving', 'validating',
+			'materializing', 'applying', 'completed', 'cancelled', 'failed', 'interrupted'
+		)),
+	processed_bytes INTEGER NOT NULL DEFAULT 0,
+	total_bytes INTEGER NOT NULL DEFAULT 0,
+	cancellable INTEGER NOT NULL DEFAULT 1,
+	error TEXT,
+	created_at INTEGER NOT NULL,
+	updated_at INTEGER NOT NULL,
+	finished_at INTEGER,
+	cancel_requested INTEGER NOT NULL DEFAULT 0
+);
+
+INSERT INTO backup_operations_new (
+	id, operation_type, instance_id, snapshot_id, state,
+	processed_bytes, total_bytes, cancellable, error,
+	created_at, updated_at, finished_at, cancel_requested
+)
+SELECT
+	id, operation_type, instance_id, snapshot_id, state,
+	processed_bytes, total_bytes, cancellable, error,
+	created_at, updated_at, finished_at, cancel_requested
+FROM backup_operations;
+
+DROP TABLE backup_operations;
+ALTER TABLE backup_operations_new RENAME TO backup_operations;
+
+CREATE INDEX backup_operations_instance_created
+	ON backup_operations(instance_id, created_at DESC);
+
+CREATE INDEX backup_operations_active
+	ON backup_operations(state, updated_at DESC)
+	WHERE state NOT IN ('completed', 'cancelled', 'failed', 'interrupted');
+
+PRAGMA foreign_keys = ON;

packages/app-lib/backup_migrations/20260920230000_restore_preview_operations.sql

@@ -0,0 +1,49 @@
+PRAGMA foreign_keys = OFF;
+
+CREATE TABLE backup_operations_new (
+	id TEXT PRIMARY KEY,
+	operation_type TEXT NOT NULL
+		CHECK (operation_type IN ('create', 'restore', 'repository_move', 'restore_preview')),
+	instance_id TEXT NOT NULL,
+	snapshot_id TEXT,
+	state TEXT NOT NULL
+		CHECK (state IN (
+			'queued', 'scanning', 'hashing', 'saving', 'validating',
+			'materializing', 'applying', 'completed', 'cancelled', 'failed', 'interrupted'
+		)),
+	processed_bytes INTEGER NOT NULL DEFAULT 0,
+	total_bytes INTEGER NOT NULL DEFAULT 0,
+	cancellable INTEGER NOT NULL DEFAULT 1,
+	error TEXT,
+	created_at INTEGER NOT NULL,
+	updated_at INTEGER NOT NULL,
+	finished_at INTEGER,
+	cancel_requested INTEGER NOT NULL DEFAULT 0,
+	preview_added_files INTEGER,
+	preview_modified_files INTEGER,
+	preview_deleted_files INTEGER,
+	preview_plan_token TEXT
+);
+
+INSERT INTO backup_operations_new (
+	id, operation_type, instance_id, snapshot_id, state,
+	processed_bytes, total_bytes, cancellable, error,
+	created_at, updated_at, finished_at, cancel_requested
+)
+SELECT
+	id, operation_type, instance_id, snapshot_id, state,
+	processed_bytes, total_bytes, cancellable, error,
+	created_at, updated_at, finished_at, cancel_requested
+FROM backup_operations;
+
+DROP TABLE backup_operations;
+ALTER TABLE backup_operations_new RENAME TO backup_operations;
+
+CREATE INDEX backup_operations_instance_created
+	ON backup_operations(instance_id, created_at DESC);
+
+CREATE INDEX backup_operations_active
+	ON backup_operations(state, updated_at DESC)
+	WHERE state NOT IN ('completed', 'cancelled', 'failed', 'interrupted');
+
+PRAGMA foreign_keys = ON;

packages/app-lib/migrations/20261002010000_add-ignore-ssl-errors.sql

@@ -0,0 +1 @@
+ALTER TABLE settings ADD COLUMN ignore_ssl_errors INTEGER NOT NULL DEFAULT 0;

packages/app-lib/migrations/20261002020000_add-font-settings.sql

@@ -0,0 +1,2 @@
+ALTER TABLE settings ADD COLUMN ui_font TEXT;
+ALTER TABLE settings ADD COLUMN mono_font TEXT;

packages/app-lib/migrations/20261002030000_instance-backup-repository-path.sql

@@ -0,0 +1 @@
+ALTER TABLE settings ADD COLUMN backup_repository_path TEXT;

packages/app-lib/migrations/20261002030100_pending-backup-repository-cleanups.sql

@@ -0,0 +1,4 @@
+CREATE TABLE pending_backup_repository_cleanups (
+	path TEXT PRIMARY KEY,
+	created_at INTEGER NOT NULL
+);

packages/app-lib/migrations/20261003000000_instance-sync-feature-tables.sql

@@ -0,0 +1,217 @@
+-- Instance settings synchronization: shared feature tables.
+--
+-- Split out of Axolotl's combined "instance-sync-and-screenshot-center"
+-- migration so that the screenshot-center tables (already present in this
+-- fork under its own migration) are not created twice.
+
+CREATE TABLE sync_feature_settings (
+	feature TEXT PRIMARY KEY NOT NULL,
+	globally_enabled INTEGER NOT NULL CHECK (globally_enabled IN (0, 1)),
+	new_instance_default INTEGER NOT NULL CHECK (new_instance_default IN (0, 1))
+);
+
+INSERT INTO sync_feature_settings (feature, globally_enabled, new_instance_default)
+VALUES
+	('command_history', 0, 0),
+	('multiplayer_servers', 0, 0),
+	('creative_hotbars', 0, 0),
+	('screenshots', 0, 0),
+	('game_options', 0, 0),
+	('resource_packs', 0, 0),
+	('data_packs', 0, 0);
+
+CREATE TABLE instance_sync_preferences (
+	instance_id TEXT NOT NULL,
+	feature TEXT NOT NULL,
+	enabled INTEGER NOT NULL CHECK (enabled IN (0, 1)),
+	PRIMARY KEY (instance_id, feature),
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE,
+	FOREIGN KEY (feature) REFERENCES sync_feature_settings (feature) ON DELETE CASCADE
+);
+
+CREATE INDEX instance_sync_preferences_feature_enabled
+	ON instance_sync_preferences (feature, enabled);
+
+INSERT INTO instance_sync_preferences (instance_id, feature, enabled)
+SELECT instances.id, features.feature, features.enabled
+FROM instances
+CROSS JOIN (
+	SELECT 'command_history' AS feature, 0 AS enabled
+	UNION ALL SELECT 'multiplayer_servers', 0
+	UNION ALL SELECT 'creative_hotbars', 0
+	UNION ALL SELECT 'screenshots', 0
+) AS features;
+
+INSERT INTO instance_sync_preferences (instance_id, feature, enabled)
+SELECT id, 'game_options', 0 FROM instances;
+
+INSERT INTO instance_sync_preferences (instance_id, feature, enabled)
+SELECT instances.id, features.feature, 0
+FROM instances
+CROSS JOIN (
+	SELECT 'resource_packs' AS feature
+	UNION ALL SELECT 'data_packs'
+) AS features;
+
+CREATE TABLE synced_game_option_state (
+	singleton INTEGER PRIMARY KEY NOT NULL CHECK (singleton = 1),
+	revision INTEGER NOT NULL CHECK (revision >= 0),
+	catalog_revision INTEGER NOT NULL CHECK (catalog_revision >= 1)
+);
+
+CREATE TABLE synced_game_option_values (
+	option_id TEXT PRIMARY KEY NOT NULL,
+	kind TEXT NOT NULL CHECK (kind IN ('vanilla', 'external')),
+	raw_key TEXT,
+	canonical_type TEXT NOT NULL,
+	canonical_value_json TEXT,
+	value_codec TEXT NOT NULL,
+	seeded INTEGER NOT NULL CHECK (seeded IN (0, 1)),
+	revision INTEGER NOT NULL CHECK (revision >= 0),
+	origin TEXT NOT NULL CHECK (origin IN ('app_editor', 'instance', 'source_seed')),
+	source_game_version TEXT,
+	source_instance_id TEXT,
+	updated_at INTEGER NOT NULL
+);
+
+CREATE TABLE synced_game_option_preferences (
+	option_id TEXT PRIMARY KEY NOT NULL,
+	enabled INTEGER NOT NULL CHECK (enabled IN (0, 1)),
+	source TEXT NOT NULL CHECK (source IN ('catalog_default', 'discovery_default', 'user')),
+	revision INTEGER NOT NULL CHECK (revision >= 0)
+);
+
+CREATE TABLE instance_game_option_pack_bases (
+	instance_id TEXT PRIMARY KEY NOT NULL,
+	pack_version_id TEXT,
+	source TEXT NOT NULL CHECK (source IN ('client_overrides', 'overrides', 'none')),
+	sha1 TEXT,
+	encoding TEXT,
+	document BLOB,
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
+);
+
+CREATE TABLE instance_game_option_update_state (
+	instance_id TEXT PRIMARY KEY NOT NULL,
+	had_file INTEGER NOT NULL CHECK (had_file IN (0, 1)),
+	sha1 TEXT,
+	document BLOB,
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
+);
+
+CREATE TABLE game_option_locale_origins (
+	scope TEXT NOT NULL,
+	option_id TEXT NOT NULL,
+	source_instance_id TEXT,
+	source_game_version TEXT,
+	backfilled INTEGER NOT NULL DEFAULT 0,
+	observation_json TEXT,
+	origin_json TEXT,
+	PRIMARY KEY (scope, option_id)
+);
+
+INSERT INTO game_option_locale_origins
+	(scope, option_id, source_instance_id, source_game_version, backfilled)
+SELECT '', option_id, source_instance_id, source_game_version, 1
+FROM synced_game_option_values;
+
+CREATE TRIGGER record_game_option_locale_origin
+AFTER INSERT ON synced_game_option_values
+BEGIN
+	INSERT INTO game_option_locale_origins
+		(scope, option_id, source_instance_id, source_game_version)
+	VALUES ('', NEW.option_id, NEW.source_instance_id, NEW.source_game_version)
+	ON CONFLICT(scope, option_id) DO NOTHING;
+END;
+
+CREATE TABLE instance_sync_checkpoints (
+	instance_id TEXT NOT NULL,
+	feature TEXT NOT NULL,
+	variant TEXT NOT NULL CHECK (variant IN ('default', 'legacy', 'components')),
+	expected_sha1 TEXT NOT NULL,
+	merge_base BLOB,
+	source_revision INTEGER NOT NULL CHECK (source_revision >= 0),
+	status TEXT NOT NULL CHECK (status IN ('pending', 'ready')),
+	link_mode TEXT CHECK (link_mode IS NULL OR link_mode IN ('copy', 'hard', 'symbolic')),
+	PRIMARY KEY (instance_id, feature, variant),
+	FOREIGN KEY (instance_id, feature)
+		REFERENCES instance_sync_preferences (instance_id, feature) ON DELETE CASCADE
+);
+
+CREATE TABLE synced_hotbar_state (
+	singleton INTEGER PRIMARY KEY NOT NULL CHECK (singleton = 1),
+	schema_version INTEGER NOT NULL CHECK (schema_version >= 1),
+	revision INTEGER NOT NULL CHECK (revision >= 0),
+	nbt BLOB NOT NULL
+);
+
+CREATE TABLE synced_server_state (
+	singleton INTEGER PRIMARY KEY NOT NULL CHECK (singleton = 1),
+	revision INTEGER NOT NULL CHECK (revision >= 0)
+);
+
+CREATE TABLE synced_servers (
+	id TEXT PRIMARY KEY NOT NULL,
+	position INTEGER NOT NULL UNIQUE CHECK (position >= 0),
+	nbt BLOB NOT NULL
+);
+
+CREATE TABLE instance_servers (
+	instance_id TEXT NOT NULL,
+	id TEXT NOT NULL,
+	source TEXT NOT NULL CHECK (source IN ('modpack', 'local_desynced')),
+	excluded_synced_server_id TEXT,
+	nbt BLOB NOT NULL,
+	position INTEGER NOT NULL CHECK (position >= 0),
+	PRIMARY KEY (instance_id, id),
+	UNIQUE (instance_id, position),
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE,
+	FOREIGN KEY (excluded_synced_server_id) REFERENCES synced_servers (id) ON DELETE SET NULL
+);
+
+CREATE TABLE instance_server_projection_entries (
+	instance_id TEXT NOT NULL,
+	owner TEXT NOT NULL CHECK (owner IN ('synced', 'instance')),
+	server_id TEXT NOT NULL,
+	nbt BLOB NOT NULL,
+	position INTEGER NOT NULL CHECK (position >= 0),
+	PRIMARY KEY (instance_id, owner, server_id),
+	UNIQUE (instance_id, position),
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
+);
+
+CREATE TABLE instance_server_pack_state (
+	instance_id TEXT PRIMARY KEY NOT NULL,
+	version_id TEXT,
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
+);
+
+-- Synced pack catalog tables (ported alongside the sync feature tables).
+CREATE TABLE synced_pack_catalog (
+	id TEXT PRIMARY KEY NOT NULL,
+	project_type TEXT NOT NULL CHECK (project_type IN ('resourcepack', 'datapack')),
+	file_name TEXT NOT NULL,
+	sha1 TEXT NOT NULL UNIQUE,
+	size INTEGER NOT NULL CHECK (size >= 0),
+	game_versions_json TEXT NOT NULL DEFAULT '[]',
+	enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
+	created_at INTEGER NOT NULL,
+	modified_at INTEGER NOT NULL
+);
+
+CREATE INDEX synced_pack_catalog_type ON synced_pack_catalog(project_type, modified_at);
+
+CREATE TABLE synced_pack_instances (
+	pack_id TEXT NOT NULL,
+	instance_id TEXT NOT NULL,
+	excluded INTEGER NOT NULL DEFAULT 0 CHECK (excluded IN (0, 1)),
+	materialized_path TEXT,
+	modified_at INTEGER NOT NULL,
+	PRIMARY KEY (pack_id, instance_id),
+	FOREIGN KEY (pack_id) REFERENCES synced_pack_catalog(id) ON DELETE CASCADE,
+	FOREIGN KEY (instance_id) REFERENCES instances(id) ON DELETE CASCADE
+);
+
+CREATE INDEX synced_pack_instances_instance ON synced_pack_instances(instance_id, excluded);
+
+ALTER TABLE settings ADD COLUMN sync_features_across_devices INTEGER NOT NULL DEFAULT FALSE;

packages/app-lib/migrations/20261003000100_linked-server-project-sync-source.sql

@@ -0,0 +1,27 @@
+-- Axolotl stores managed server-project entries alongside the local additions
+-- that are composed with the launcher-wide multiplayer server list. Extend
+-- the original sync table constraint without changing the already-applied
+-- instance-sync migration.
+CREATE TABLE instance_servers_new (
+	instance_id TEXT NOT NULL,
+	id TEXT NOT NULL,
+	source TEXT NOT NULL CHECK (
+		source IN ('modpack', 'linked_server_project', 'local_desynced')
+	),
+	excluded_synced_server_id TEXT,
+	nbt BLOB NOT NULL,
+	position INTEGER NOT NULL CHECK (position >= 0),
+	PRIMARY KEY (instance_id, id),
+	UNIQUE (instance_id, position),
+	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE,
+	FOREIGN KEY (excluded_synced_server_id)
+		REFERENCES synced_servers (id) ON DELETE SET NULL
+);
+
+INSERT INTO instance_servers_new
+	(instance_id, id, source, excluded_synced_server_id, nbt, position)
+SELECT instance_id, id, source, excluded_synced_server_id, nbt, position
+FROM instance_servers;
+
+DROP TABLE instance_servers;
+ALTER TABLE instance_servers_new RENAME TO instance_servers;

packages/app-lib/migrations/20261003000200_synced-pack-selection.sql

@@ -0,0 +1,2 @@
+ALTER TABLE synced_pack_catalog ADD COLUMN selected INTEGER NOT NULL DEFAULT 1 CHECK (selected IN (0, 1));
+ALTER TABLE synced_pack_catalog ADD COLUMN selection_order INTEGER;

packages/app-lib/migrations/20261003000300_disable-discovered-game-options.sql

@@ -0,0 +1,5 @@
+-- Discovered options are catalogued for review, but must not be synced until
+-- the user explicitly enables them.
+UPDATE synced_game_option_preferences
+SET enabled = 0
+WHERE source = 'discovery_default' AND enabled = 1;

packages/app-lib/src/api/instance/lifecycle.rs

@@ -103,6 +103,7 @@ pub async fn edit(
     patch: EditInstance,
 ) -> crate::Result<InstanceMetadata> {
     let state = State::get().await?;
+    super::ensure_backup_eligible_edit(instance_id, &patch).await?;
     crate::state::edit_instance(instance_id, patch, &state.pool).await?;
 
     let instance = crate::state::get_instance(instance_id, &state.pool)

packages/app-lib/src/api/instance/mod.rs

@@ -1,5 +1,6 @@
 //! Theseus instance management interface
 
+mod backup;
 mod content;
 mod core_components;
 mod export_mrpack;
@@ -14,8 +15,44 @@ mod projects;
 mod run;
 mod screenshot_groups;
 mod screenshots;
+pub(crate) mod synced_options;
 mod upgrade;
+pub(crate) mod synced_packs {
+    pub(crate) use super::synced_packs_axolotl::{
+        capture_resource_pack_selection_change, detach,
+        prepare_instance_update, reconcile, seed_from_instance,
+    };
+}
+mod synced_packs_axolotl;
+pub(crate) mod synced_servers;
 
+pub use self::backup::{
+    BackupDeleteSummary, BackupExclusion, BackupExclusionKind, BackupOperation,
+    BackupOperationState, BackupOperationType, BackupRepositoryStatus,
+    BackupRestorePreview, BackupSnapshot, InstanceBackupConfig,
+    InstanceBackupEligibility, cancel_backup,
+    delete_snapshot as delete_backup_snapshot, disable as disable_backups,
+    enable as enable_backups,
+    exclusion_from_absolute_path as get_backup_exclusion_from_path,
+    has_active_operations as has_active_backup_operations,
+    has_active_repository_move as has_active_backup_repository_move,
+    instance_config as get_backup_config,
+    instance_delete_summary as get_backup_delete_summary,
+    interrupt_active_operations as interrupt_active_backup_operations,
+    list_operations as list_backup_operations,
+    list_snapshots as list_backup_snapshots,
+    maintain_repository as maintain_backup_repository,
+    repository_status as get_backup_repository_status, restore_snapshot,
+    start_repository_move as move_backup_repository,
+    start_restore_preview as get_backup_restore_preview,
+    start_snapshot as start_backup_snapshot,
+    update_exclusions as update_backup_exclusions,
+};
+pub(crate) use self::backup::{
+    begin_instance_deletion, cancel_instance_deletion, delete_instance_backups,
+    ensure_backup_eligible_edit, has_active_instance_operation,
+    lock_instance_maintenance, move_default_repository_for_launcher_directory,
+};
 pub use self::content::{
     apply_content_update_plan, get_content_items, get_content_items_by_paths,
     get_content_snapshot, get_dependencies_as_content_items,
@@ -86,6 +123,48 @@ pub use self::screenshots::{
     list_all_screenshots, list_screenshots, list_synced_screenshots,
     move_screenshots, save_edited_screenshot,
 };
+pub use self::synced_options::game_options::{
+    GameOptionsSourceCandidate, GameSettingLocaleLabels,
+    GameSettingsEditorState, SaveGameSettingsResult, UpdateGameSettingsRequest,
+    get_config as get_synced_game_options_config,
+    get_game_setting_locale_labels,
+    get_local_config as get_local_game_options_config,
+    list_sync_sources as list_game_options_sync_sources,
+    preview_changes as preview_synced_game_option_changes,
+    preview_local_changes as preview_local_game_option_changes,
+    save_changes as save_synced_game_option_changes,
+    save_local_changes as save_local_game_option_changes,
+};
+pub(crate) use self::synced_options::game_options::{
+    apply_launcher_overrides as apply_game_options_launcher_overrides,
+    sync_before_launch as sync_game_options_before_launch,
+};
+pub use self::synced_options::{
+    GlobalSyncedOptions, SyncedOptionCapability, SyncedOptionJoinAction,
+    SyncedOptionJoinPreview, SyncedOptionJoinResolution, SyncedOptionsOverview,
+    get_capabilities as get_synced_option_capabilities,
+    get_command_history as get_synced_command_history,
+    get_global_options as get_global_synced_options,
+    get_initialized_options as get_initialized_synced_options,
+    get_instance_option_join_preview as get_synced_option_join_preview,
+    get_overview as get_synced_options_overview,
+    set_command_history as set_synced_command_history,
+    set_global_option as set_global_synced_option,
+    set_instance_option as set_instance_synced_option,
+};
+pub(crate) use self::synced_options::{
+    reconcile_changed_file as reconcile_synced_option_file,
+    remove_generated_instance_files,
+};
+pub use self::synced_packs_axolotl::{
+    PackSyncPreview, PackSyncTarget, desync_pack, get_pack_sync_preview,
+    list_synced_packs, remove_synced_pack, set_synced_pack_enabled, sync_pack,
+    upload_synced_pack,
+};
+pub use self::synced_servers::{
+    DesyncServerMode, ServerSource, SyncedServer, desync_server,
+    list_synced_servers, remove_synced_server, update_synced_server,
+};
 pub use self::upgrade::{
     dismiss_instance_post_upgrade_notice, execute_instance_upgrade,
     get_instance_post_upgrade_notice, get_instance_upgrade_plan,
@@ -94,3 +173,4 @@ pub use self::upgrade::{
     update_instance_upgrade_resolution, update_instance_upgrade_resolutions,
 };
 pub use crate::state::{DailyPlaytime, DailyPlaytimeEntry};
+pub use crate::state::{InstanceSyncedOptions, SyncedOption};

packages/app-lib/src/api/instance/run.rs

@@ -75,6 +75,15 @@ async fn run_with_extra_launch_args_inner(
     extra_launch_args: Option<Vec<String>>,
     gc_intent: Option<GcLaunchIntent>,
 ) -> crate::Result<(ProcessMetadata, Option<GcLaunchReport>)> {
+    if crate::api::instance::has_active_instance_operation(instance_id) {
+        return Err(crate::ErrorKind::InputError(
+            "Wait for the active backup operation to finish before launching this instance"
+                .to_string(),
+        )
+        .into());
+    }
+    let _maintenance_guard =
+        crate::api::instance::lock_instance_maintenance(instance_id).await;
     let _hosted_guard =
         crate::pack::hosted::prepare_launch(instance_id, offline_mode).await?;
     let state = State::get().await?;

packages/app-lib/src/api/instance/synced_options/command_history.rs

@@ -0,0 +1,186 @@
+use super::COMMAND_HISTORY_FILE;
+use super::files::{
+    CheckpointStatus, begin_checkpoint, checkpoint, ensure_link,
+    finish_checkpoint, instance_game_dir, sha1_bytes, sha1_file,
+    synced_options_path,
+};
+use super::orchestration::{create_synced_directories, option_effective};
+use crate::State;
+use crate::state::{InstanceMetadata, SyncedOption};
+use crate::util::io;
+use std::path::PathBuf;
+
+const COMMAND_HISTORY_LIMIT: usize = 50;
+
+pub async fn get_command_history() -> crate::Result<String> {
+    let state = State::get().await?;
+    let _guard = state.lock_synced_options().await;
+    let path = command_history_path(&state);
+    if !path.exists() {
+        return Ok(String::new());
+    }
+    Ok(String::from_utf8_lossy(&io::read(path).await?).into_owned())
+}
+
+pub async fn set_command_history(contents: &str) -> crate::Result<String> {
+    let state = State::get().await?;
+    let _guard = state.lock_synced_options().await;
+    create_synced_directories(&state).await?;
+    let normalized = normalize_command_history(contents);
+    io::write(command_history_path(&state), normalized.as_bytes()).await?;
+    refresh_command_history_links(&state).await?;
+    Ok(normalized)
+}
+
+pub(super) async fn ensure_command_history(
+    metadata: &InstanceMetadata,
+    state: &State,
+) -> crate::Result<()> {
+    create_synced_directories(state).await?;
+    let canonical = command_history_path(state);
+    if !canonical.exists() {
+        let local =
+            instance_game_dir(metadata, state)?.join(COMMAND_HISTORY_FILE);
+        let contents = if local.exists() {
+            String::from_utf8_lossy(&io::read(&local).await?).into_owned()
+        } else {
+            String::new()
+        };
+        io::write(&canonical, normalize_command_history(&contents)).await?;
+    }
+    let target = instance_game_dir(metadata, state)?.join(COMMAND_HISTORY_FILE);
+    let canonical_bytes = io::read(&canonical).await?;
+    let expected = sha1_bytes(&canonical_bytes);
+    begin_checkpoint(
+        &metadata.instance.id,
+        SyncedOption::CommandHistory,
+        "default",
+        &expected,
+        None,
+        0,
+        state,
+    )
+    .await?;
+    let mode = ensure_link(&canonical, &target).await?;
+    finish_checkpoint(
+        &metadata.instance.id,
+        SyncedOption::CommandHistory,
+        "default",
+        mode,
+        state,
+    )
+    .await
+}
+
+pub(super) async fn reconcile_command_history(
+    metadata: &InstanceMetadata,
+    state: &State,
+) -> crate::Result<()> {
+    if !option_effective(metadata, SyncedOption::CommandHistory, state).await? {
+        return Ok(());
+    }
+    let local = instance_game_dir(metadata, state)?.join(COMMAND_HISTORY_FILE);
+    if !local.exists() {
+        return ensure_command_history(metadata, state).await;
+    }
+    let symlink = tokio::fs::symlink_metadata(&local)
+        .await
+        .map(|metadata| metadata.file_type().is_symlink())
+        .unwrap_or(false);
+    let current_checkpoint = checkpoint(
+        &metadata.instance.id,
+        SyncedOption::CommandHistory,
+        "default",
+        state,
+    )
+    .await?;
+    if current_checkpoint
+        .as_ref()
+        .is_some_and(|value| value.status == CheckpointStatus::Pending)
+    {
+        return ensure_command_history(metadata, state).await;
+    }
+    let actual = sha1_file(&local).await?;
+    let expected = current_checkpoint.map(|value| value.expected_sha1);
+    if !symlink && expected.as_deref() != Some(actual.as_str()) {
+        let contents =
+            String::from_utf8_lossy(&io::read(&local).await?).into_owned();
+        io::write(
+            command_history_path(state),
+            normalize_command_history(&contents),
+        )
+        .await?;
+        refresh_command_history_links(state).await?;
+    } else {
+        ensure_command_history(metadata, state).await?;
+    }
+    Ok(())
+}
+
+async fn refresh_command_history_links(state: &State) -> crate::Result<()> {
+    let instances = crate::state::list_instances(&state.pool).await?;
+    for metadata in instances {
+        if option_effective(&metadata, SyncedOption::CommandHistory, state)
+            .await?
+        {
+            ensure_command_history(&metadata, state).await?;
+        }
+    }
+    Ok(())
+}
+
+pub(super) fn normalize_command_history(contents: &str) -> String {
+    let lines = contents.lines().collect::<Vec<_>>();
+    let start = lines.len().saturating_sub(COMMAND_HISTORY_LIMIT);
+    let mut normalized = lines[start..].join("\n");
+    if !normalized.is_empty() {
+        normalized.push('\n');
+    }
+    normalized
+}
+
+pub(super) async fn merge_command_history_from_instance(
+    metadata: &InstanceMetadata,
+    state: &State,
+) -> crate::Result<()> {
+    let canonical_path = command_history_path(state);
+    let canonical = if canonical_path.exists() {
+        String::from_utf8_lossy(&io::read(&canonical_path).await?).into_owned()
+    } else {
+        String::new()
+    };
+    let local_path =
+        instance_game_dir(metadata, state)?.join(COMMAND_HISTORY_FILE);
+    let local = if local_path.exists() {
+        String::from_utf8_lossy(&io::read(&local_path).await?).into_owned()
+    } else {
+        String::new()
+    };
+    let canonical_lines = canonical.lines().collect::<Vec<_>>();
+    let available = COMMAND_HISTORY_LIMIT.saturating_sub(canonical_lines.len());
+    let mut seen = canonical_lines
+        .iter()
+        .copied()
+        .collect::<std::collections::HashSet<_>>();
+    let mut imported = Vec::new();
+    for line in local.lines().rev() {
+        if imported.len() == available {
+            break;
+        }
+        if seen.insert(line) {
+            imported.push(line);
+        }
+    }
+    imported.reverse();
+    imported.extend(canonical_lines);
+    let merged = normalize_command_history(&imported.join("\n"));
+    if merged != normalize_command_history(&canonical) {
+        io::write(&canonical_path, merged).await?;
+        refresh_command_history_links(state).await?;
+    }
+    Ok(())
+}
+
+pub(super) fn command_history_path(state: &State) -> PathBuf {
+    synced_options_path(state).join(COMMAND_HISTORY_FILE)
+}

packages/app-lib/src/api/instance/synced_options/files.rs

@@ -0,0 +1,338 @@
+use crate::state::{InstanceInstallStage, InstanceMetadata, SyncedOption};
+use crate::util::io;
+use crate::{ErrorKind, State};
+use quartz_nbt::NbtCompound;
+use sha1_smol::Sha1;
+use std::io::Cursor;
+use std::path::{Path, PathBuf};
+
+pub(in crate::api::instance) struct SyncCheckpoint {
+    pub expected_sha1: String,
+    pub merge_base: Option<Vec<u8>>,
+    pub source_revision: i64,
+    pub status: CheckpointStatus,
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub(in crate::api::instance) enum CheckpointStatus {
+    Pending,
+    Ready,
+}
+
+impl CheckpointStatus {
+    fn from_str(value: &str) -> Option<Self> {
+        match value {
+            "pending" => Some(Self::Pending),
+            "ready" => Some(Self::Ready),
+            _ => None,
+        }
+    }
+}
+
+#[derive(Clone, Copy, Debug)]
+pub(in crate::api::instance) enum LinkMode {
+    Symbolic,
+    #[cfg(windows)]
+    Hard,
+    #[cfg(windows)]
+    Copy,
+}
+
+impl LinkMode {
+    fn as_str(self) -> &'static str {
+        match self {
+            Self::Symbolic => "symbolic",
+            #[cfg(windows)]
+            Self::Hard => "hard",
+            #[cfg(windows)]
+            Self::Copy => "copy",
+        }
+    }
+}
+
+pub(in crate::api::instance) fn safe_instance_id(instance_id: &str) -> String {
+    instance_id.replace([':', '/', '\\'], "_")
+}
+
+pub(crate) fn instance_game_dir(
+    metadata: &InstanceMetadata,
+    state: &State,
+) -> crate::Result<PathBuf> {
+    crate::state::instances::commands::instance_content_root(
+        &state.directories,
+        &metadata.instance,
+    )
+}
+
+pub(crate) fn synced_options_path(state: &State) -> PathBuf {
+    state.directories.synced_options_dir()
+}
+
+pub(in crate::api::instance) fn sync_files_are_protected(
+    metadata: &InstanceMetadata,
+) -> bool {
+    matches!(
+        metadata.instance.install_stage,
+        InstanceInstallStage::MinecraftInstalling
+            | InstanceInstallStage::PackInstalling
+    )
+}
+
+pub(in crate::api::instance) async fn instance_is_running(
+    metadata: &InstanceMetadata,
+    state: &State,
+) -> crate::Result<bool> {
+    crate::state::instance_has_running_process(&metadata.instance.id, state)
+        .await
+}
+
+pub(in crate::api::instance) fn option_can_apply_while_running(
+    option: SyncedOption,
+) -> bool {
+    matches!(
+        option,
+        SyncedOption::GameOptions
+            | SyncedOption::Screenshots
+            | SyncedOption::ResourcePacks
+    )
+}
+
+pub(in crate::api::instance) fn instance_option_enabled(
+    metadata: &InstanceMetadata,
+    option: SyncedOption,
+) -> bool {
+    match option {
+        SyncedOption::GameOptions => metadata.synced_options.game_options,
+        SyncedOption::CommandHistory => metadata.synced_options.command_history,
+        SyncedOption::MultiplayerServers => {
+            metadata.synced_options.multiplayer_servers
+        }
+        SyncedOption::CreativeHotbars => {
+            metadata.synced_options.creative_hotbars
+        }
+        SyncedOption::Screenshots => metadata.synced_options.screenshots,
+        SyncedOption::ResourcePacks => metadata.synced_options.resource_packs,
+        SyncedOption::DataPacks => metadata.synced_options.data_packs,
+    }
+}
+
+pub(in crate::api::instance) async fn ensure_link(
+    source: &Path,
+    target: &Path,
+) -> crate::Result<LinkMode> {
+    if let Some(parent) = target.parent() {
+        io::create_dir_all(parent).await?;
+    }
+    if tokio::fs::symlink_metadata(target)
+        .await
+        .is_ok_and(|metadata| metadata.file_type().is_symlink())
+        && tokio::fs::read_link(target)
+            .await
+            .is_ok_and(|current| current == source)
+    {
+        return Ok(LinkMode::Symbolic);
+    }
+    if tokio::fs::symlink_metadata(target).await.is_ok() {
+        io::remove_file(target).await?;
+    }
+
+    #[cfg(unix)]
+    {
+        tokio::fs::symlink(source, target).await?;
+        Ok(LinkMode::Symbolic)
+    }
+    #[cfg(windows)]
+    {
+        if tokio::fs::symlink_file(source, target).await.is_ok() {
+            return Ok(LinkMode::Symbolic);
+        }
+        if tokio::fs::hard_link(source, target).await.is_ok() {
+            return Ok(LinkMode::Hard);
+        }
+        io::copy(source, target).await?;
+        Ok(LinkMode::Copy)
+    }
+}
+
+pub(in crate::api::instance) async fn detach_link(
+    source: &Path,
+    target: &Path,
+) -> crate::Result<()> {
+    let target_metadata = tokio::fs::symlink_metadata(target).await.ok();
+    let contents = if target_metadata.is_some() && target.exists() {
+        Some(io::read(target).await?)
+    } else if source.exists() {
+        Some(io::read(source).await?)
+    } else {
+        None
+    };
+    if target_metadata.is_some() {
+        io::remove_file(target).await?;
+    }
+    if let Some(contents) = contents {
+        io::write(target, contents).await?;
+    }
+    Ok(())
+}
+
+pub(in crate::api::instance) async fn begin_checkpoint(
+    instance_id: &str,
+    option: SyncedOption,
+    variant: &str,
+    expected_sha1: &str,
+    merge_base: Option<&[u8]>,
+    source_revision: i64,
+    state: &State,
+) -> crate::Result<()> {
+    let option_name = option.as_str();
+    sqlx::query(
+        "
+		INSERT INTO instance_sync_checkpoints
+			(instance_id, feature, variant, expected_sha1, merge_base,
+			 source_revision, status, link_mode)
+		VALUES (?, ?, ?, ?, ?, ?, 'pending', NULL)
+		ON CONFLICT(instance_id, feature, variant) DO UPDATE SET
+			expected_sha1 = excluded.expected_sha1,
+			merge_base = excluded.merge_base,
+			source_revision = excluded.source_revision,
+			status = 'pending',
+			link_mode = NULL
+		",
+    )
+    .bind(instance_id)
+    .bind(option_name)
+    .bind(variant)
+    .bind(expected_sha1)
+    .bind(merge_base)
+    .bind(source_revision)
+    .execute(&state.pool)
+    .await?;
+    Ok(())
+}
+
+pub(in crate::api::instance) async fn finish_checkpoint(
+    instance_id: &str,
+    option: SyncedOption,
+    variant: &str,
+    mode: LinkMode,
+    state: &State,
+) -> crate::Result<()> {
+    let option_name = option.as_str();
+    let link_mode = mode.as_str();
+    sqlx::query(
+        "
+		UPDATE instance_sync_checkpoints
+		SET status = 'ready', link_mode = ?
+		WHERE instance_id = ? AND feature = ? AND variant = ?
+		",
+    )
+    .bind(link_mode)
+    .bind(instance_id)
+    .bind(option_name)
+    .bind(variant)
+    .execute(&state.pool)
+    .await?;
+    Ok(())
+}
+
+pub(in crate::api::instance) async fn finish_plain_checkpoint(
+    instance_id: &str,
+    option: SyncedOption,
+    variant: &str,
+    state: &State,
+) -> crate::Result<()> {
+    let option_name = option.as_str();
+    sqlx::query(
+        "
+		UPDATE instance_sync_checkpoints
+		SET status = 'ready', link_mode = NULL
+		WHERE instance_id = ? AND feature = ? AND variant = ?
+		",
+    )
+    .bind(instance_id)
+    .bind(option_name)
+    .bind(variant)
+    .execute(&state.pool)
+    .await?;
+    Ok(())
+}
+
+pub(in crate::api::instance) async fn checkpoint(
+    instance_id: &str,
+    option: SyncedOption,
+    variant: &str,
+    state: &State,
+) -> crate::Result<Option<SyncCheckpoint>> {
+    let option_name = option.as_str();
+    let row = sqlx::query(
+        r#"
+		SELECT expected_sha1, merge_base, source_revision, status
+		FROM instance_sync_checkpoints
+		WHERE instance_id = ? AND feature = ? AND variant = ?
+		"#,
+    )
+    .bind(instance_id)
+    .bind(option_name)
+    .bind(variant)
+    .fetch_optional(&state.pool)
+    .await?;
+    use sqlx::Row;
+    row.map(|row| {
+        let status: String = row.get("status");
+        Ok(SyncCheckpoint {
+            expected_sha1: row.get("expected_sha1"),
+            merge_base: row.get("merge_base"),
+            source_revision: row.get("source_revision"),
+            status: CheckpointStatus::from_str(&status).ok_or_else(|| {
+                ErrorKind::InputError(format!(
+                    "Unknown sync checkpoint status {status}"
+                ))
+            })?,
+        })
+    })
+    .transpose()
+}
+
+pub(in crate::api::instance) async fn sha1_file(
+    path: &Path,
+) -> crate::Result<String> {
+    Ok(Sha1::from(io::read(path).await?).digest().to_string())
+}
+
+pub(in crate::api::instance) fn sha1_bytes(bytes: &[u8]) -> String {
+    Sha1::from(bytes).digest().to_string()
+}
+
+pub(in crate::api::instance) async fn read_nbt_file(
+    path: &Path,
+) -> crate::Result<NbtCompound> {
+    let bytes = io::read(path).await?;
+    let (root, _) = quartz_nbt::io::read_nbt(
+        &mut Cursor::new(bytes),
+        quartz_nbt::io::Flavor::Uncompressed,
+    )?;
+    Ok(root)
+}
+
+pub(in crate::api::instance) fn nbt_to_bytes(
+    root: &NbtCompound,
+) -> crate::Result<Vec<u8>> {
+    let mut bytes = Vec::new();
+    quartz_nbt::io::write_nbt(
+        &mut bytes,
+        None,
+        root,
+        quartz_nbt::io::Flavor::Uncompressed,
+    )?;
+    Ok(bytes)
+}
+
+pub(in crate::api::instance) fn nbt_from_bytes(
+    bytes: Vec<u8>,
+) -> crate::Result<NbtCompound> {
+    let (root, _) = quartz_nbt::io::read_nbt(
+        &mut Cursor::new(bytes),
+        quartz_nbt::io::Flavor::Uncompressed,
+    )?;
+    Ok(root)
+}

packages/app-lib/src/api/instance/synced_options/game_options/api_types.rs

@@ -0,0 +1,203 @@
+use crate::state::{CanonicalValue, GameOptionKind};
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionsSourceIssue {
+    InstallingOrUpdating,
+    UnsupportedVersion,
+    MissingOptionsFile,
+    NoSyncableSettings,
+    UnreadableOptionsFile,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameOptionsSourceCandidate {
+    pub source_id: String,
+    pub instance_id: String,
+    pub name: String,
+    pub icon_path: Option<String>,
+    pub game_version: Option<String>,
+    pub eligible: bool,
+    pub disabled_reason: Option<GameOptionsSourceIssue>,
+    pub recognized_setting_count: u32,
+    pub custom_setting_count: u32,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameSettingCategory {
+    pub id: String,
+    pub is_custom: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameOptionEditorDefinition {
+    #[serde(rename = "type")]
+    pub type_: String,
+    pub min: Option<f64>,
+    pub max: Option<f64>,
+    pub step: Option<f64>,
+    pub unit: Option<String>,
+    pub choices: Vec<GameOptionEditorChoice>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameOptionEditorChoice {
+    pub value: String,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionCompatibilityStatus {
+    Ready,
+    Deferred,
+    WaitingForFile,
+    WaitingForBase,
+    NotAvailable,
+    UnsupportedValue,
+    Unmappable,
+    CatalogUncovered,
+    Controlled,
+    Degraded,
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionMappingKind {
+    Direct,
+    Legacy,
+    Migrated,
+    Lossless,
+    Lossy,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionCompatibilityReason {
+    LauncherControlled,
+    CatalogUncovered,
+    InspectionFailed,
+    WaitingForOptionsFile,
+    UnsupportedValue,
+    MigratesOnWrite,
+    WaitingForCompatibleBase,
+    MissingSetting,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameOptionCompatibilityBucket {
+    pub instance_count: u32,
+    pub write_keys: Vec<String>,
+    pub eventual_keys: Vec<String>,
+    pub game_versions: Vec<String>,
+    pub status: GameOptionCompatibilityStatus,
+    pub mapping: Option<GameOptionMappingKind>,
+    pub reason: Option<GameOptionCompatibilityReason>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameOptionCompatibility {
+    pub total_participating: u32,
+    pub will_receive: u32,
+    pub write_now: u32,
+    pub left_local: u32,
+    pub buckets: Vec<GameOptionCompatibilityBucket>,
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionValueState {
+    Canonical,
+    UniformLocal,
+    Mixed,
+    Unset,
+    Invalid,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum GameOptionValidationIssue {
+    MissingValue,
+    NoCompatibleInstances,
+    InvalidValue,
+    ChangedSinceOpened,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct EditableGameSetting {
+    pub option_id: String,
+    pub category_id: String,
+    pub kind: GameOptionKind,
+    pub raw_key: Option<String>,
+    pub sync_enabled: bool,
+    pub canonical_value: Option<CanonicalValue>,
+    pub value_state: GameOptionValueState,
+    pub option_revision: u64,
+    pub editor: GameOptionEditorDefinition,
+    pub compatibility: GameOptionCompatibility,
+    pub validation_error: Option<GameOptionValidationIssue>,
+    pub controlled: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameSettingsEditorState {
+    pub summary_revision: String,
+    pub canonical_revision: u64,
+    pub catalog_revision: u32,
+    pub total_participating: u32,
+    pub categories: Vec<GameSettingCategory>,
+    pub settings: Vec<EditableGameSetting>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct UpdateGameSettingsRequest {
+    pub expected_summary_revision: String,
+    pub expected_canonical_revision: u64,
+    pub expected_catalog_revision: u32,
+    pub changes: Vec<GameSettingChange>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct GameSettingChange {
+    pub option_id: String,
+    pub base_option_revision: u64,
+    pub sync_enabled: Option<bool>,
+    #[serde(
+        default,
+        with = "serde_with::rust::double_option",
+        skip_serializing_if = "Option::is_none"
+    )]
+    pub canonical_value: Option<Option<CanonicalValue>>,
+}
+
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+pub struct SaveGameSettingsResult {
+    pub state: Option<GameSettingsEditorState>,
+    pub applied: u32,
+    pub migrated: u32,
+    pub deferred: u32,
+    pub unsupported: u32,
+    pub failed: u32,
+    pub conflicts: Vec<String>,
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub(super) enum SyncOutcome {
+    Applied,
+    Migrated,
+    Unchanged,
+    Deferred,
+    WaitingForFile,
+}
+
+pub(super) fn canonical_values_equal(
+    left: &CanonicalValue,
+    right: &CanonicalValue,
+) -> bool {
+    match (left, right) {
+        (CanonicalValue::Decimal(left), CanonicalValue::Decimal(right)) => {
+            left.parse::<f64>().ok() == right.parse::<f64>().ok()
+        }
+        _ => left == right,
+    }
+}

packages/app-lib/src/api/instance/synced_options/game_options/catalog/accessibility.rs

@@ -0,0 +1,207 @@
+use super::{
+    BOOL, SettingEditor, SupportedSetting, UNIT_INTERVAL, ValueEncoding,
+    ranged_setting, version_changes, versioned_setting,
+};
+
+const NARRATOR: &[&str] = &["0", "1", "2", "3"];
+
+pub(super) const SETTINGS: &[SupportedSetting] = &[
+    ranged_setting(
+        "narrator",
+        &["narrator"],
+        "1.12",
+        "26.3",
+        "accessibility",
+        true,
+        SettingEditor::Enum(NARRATOR),
+        ValueEncoding::Enum(NARRATOR),
+    ),
+    ranged_setting(
+        "subtitles",
+        &["showSubtitles"],
+        "1.9",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "high_contrast",
+        &["highContrast"],
+        "1.19.4",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "dark_splash",
+        &["darkMojangStudiosBackground"],
+        "1.17",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "notification_time",
+        &["notificationDisplayTime"],
+        "1.19.4",
+        "26.3",
+        "accessibility",
+        true,
+        SettingEditor::Decimal {
+            min: 0.5,
+            max: 10.0,
+            step: 0.5,
+            unit: Some("multiplier"),
+        },
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "fov_effects",
+        &["fovEffectScale"],
+        "1.16.2",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "screen_effects",
+        &["screenEffectScale"],
+        "1.16.2",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "darkness_pulsing",
+        &["darknessEffectScale"],
+        "1.19",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "damage_tilt",
+        &["damageTiltStrength"],
+        "1.19.4",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "glint_speed",
+        &["glintSpeed"],
+        "1.19.4",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "glint_strength",
+        &["glintStrength"],
+        "1.19.4",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "hide_lightning_flashes",
+        &["hideLightningFlashes"],
+        "1.18",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "hide_splash_texts",
+        &["hideSplashTexts"],
+        "1.20.3",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "high_contrast_outline",
+        &["highContrastBlockOutline"],
+        "1.21.2",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "narrator_hotkey",
+        &["narratorHotkey"],
+        "1.20.2",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "autosave_indicator",
+        &["showAutosaveIndicator"],
+        "1.18",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "panorama_speed",
+        &["panoramaScrollSpeed"],
+        "1.19.3",
+        "26.3",
+        "accessibility",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    versioned_setting(
+        "menu_background_blur",
+        &["menuBackgroundBlurriness"],
+        version_changes::MENU_BACKGROUND_BLUR_KEYS,
+        "accessibility",
+        true,
+        SettingEditor::Integer {
+            min: 0,
+            max: 10,
+            step: 1,
+        },
+        ValueEncoding::MenuBackgroundBlur,
+    ),
+    ranged_setting(
+        "rotate_with_minecart",
+        &["rotateWithMinecart"],
+        "1.21.2",
+        "26.3",
+        "accessibility",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+];

packages/app-lib/src/api/instance/synced_options/game_options/catalog/chat.rs

@@ -0,0 +1,194 @@
+use super::{
+    BOOL, SettingEditor, SupportedSetting, UNIT_INTERVAL, ValueEncoding,
+    ranged_setting, version_changes, versioned_setting,
+};
+
+const VISIBILITY: &[&str] = &["0", "1", "2"];
+const CHAT_PREVIEW: &[&str] = &["0", "1", "2"];
+
+pub(super) const SETTINGS: &[SupportedSetting] = &[
+    ranged_setting(
+        "chat_visibility",
+        &["chatVisibility"],
+        "1.3.1",
+        "26.3",
+        "chat",
+        true,
+        SettingEditor::Enum(VISIBILITY),
+        ValueEncoding::Enum(VISIBILITY),
+    ),
+    ranged_setting(
+        "chat_colors",
+        &["chatColors"],
+        "1.3.1",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "chat_links",
+        &["chatLinks"],
+        "1.3.1",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "chat_links_prompt",
+        &["chatLinksPrompt"],
+        "1.3.1",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "chat_opacity",
+        &["chatOpacity"],
+        "1.3.1",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "chat_scale",
+        &["chatScale"],
+        "1.5.1",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "chat_width",
+        &["chatWidth"],
+        "1.5.1",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "focused_chat_height",
+        &["chatHeightFocused"],
+        "1.5.1",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "unfocused_chat_height",
+        &["chatHeightUnfocused"],
+        "1.5.1",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "chat_line_spacing",
+        &["chatLineSpacing"],
+        "1.16",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "chat_delay",
+        &["chatDelay"],
+        "1.16",
+        "26.3",
+        "chat",
+        true,
+        SettingEditor::Decimal {
+            min: 0.0,
+            max: 6.0,
+            step: 0.1,
+            unit: Some("seconds"),
+        },
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "text_background_opacity",
+        &["textBackgroundOpacity"],
+        "1.14",
+        "26.3",
+        "chat",
+        true,
+        UNIT_INTERVAL,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "chat_background_only",
+        &["backgroundForChatOnly"],
+        "1.14",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "auto_suggestions",
+        &["autoSuggestions"],
+        "1.13",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "secure_chat_only",
+        &["onlyShowSecureChat"],
+        "1.19",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "save_chat_drafts",
+        &["saveChatDrafts"],
+        "1.21.9",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "hide_matched_names",
+        &["hideMatchedNames"],
+        "1.16.4",
+        "26.3",
+        "chat",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    versioned_setting(
+        "chat_preview",
+        &["chatPreview"],
+        version_changes::CHAT_PREVIEW_KEYS,
+        "chat",
+        true,
+        SettingEditor::Enum(CHAT_PREVIEW),
+        ValueEncoding::ChatPreview,
+    ),
+];

packages/app-lib/src/api/instance/synced_options/game_options/catalog/controls.rs

@@ -0,0 +1,413 @@
+use super::{
+    BOOL, SettingEditor, SupportedSetting, ValueEncoding, ranged_setting,
+    setting, version_changes, versioned_setting,
+};
+
+macro_rules! key_setting {
+    ($id:literal, $key:literal, $since:literal, $until:literal) => {
+        ranged_setting(
+            $id,
+            &[$key],
+            $since,
+            $until,
+            "controls",
+            true,
+            SettingEditor::KeyBinding,
+            ValueEncoding::KeyBinding,
+        )
+    };
+}
+
+pub(super) const SETTINGS: &[SupportedSetting] = &[
+    setting(
+        "sensitivity",
+        &["mouseSensitivity"],
+        "controls",
+        true,
+        SettingEditor::Decimal {
+            min: 0.0,
+            max: 1.0,
+            step: 0.005,
+            unit: Some("percent"),
+        },
+        ValueEncoding::Decimal,
+    ),
+    setting(
+        "invert_mouse",
+        &["invertYMouse"],
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "invert_horizontal_mouse",
+        &["invertXMouse"],
+        "1.21.9",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "auto_jump",
+        &["autoJump"],
+        "1.10",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "toggle_crouch",
+        &["toggleCrouch"],
+        "1.15",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "toggle_sprint",
+        &["toggleSprint"],
+        "1.15",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "toggle_attack",
+        &["toggleAttack"],
+        "1.21.9",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "toggle_use",
+        &["toggleUse"],
+        "1.21.9",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "discrete_mouse_scroll",
+        &["discrete_mouse_scroll"],
+        "1.14",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "mouse_wheel_sensitivity",
+        &["mouseWheelSensitivity"],
+        "1.13",
+        "26.3",
+        "controls",
+        true,
+        SettingEditor::UnboundedDecimal,
+        ValueEncoding::Decimal,
+    ),
+    ranged_setting(
+        "raw_mouse_input",
+        &["rawMouseInput"],
+        "1.14.4",
+        "26.2",
+        "controls",
+        false,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "touchscreen",
+        &["touchscreen"],
+        "1.4.4",
+        "26.1.2",
+        "controls",
+        false,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "allow_cursor_changes",
+        &["allowCursorChanges"],
+        "1.21.9",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "sprint_window",
+        &["sprintWindow"],
+        "1.21.9",
+        "26.3",
+        "controls",
+        true,
+        SettingEditor::UnboundedInteger,
+        ValueEncoding::Integer,
+    ),
+    ranged_setting(
+        "operator_items_tab",
+        &["operatorItemsTab"],
+        "1.19.3",
+        "26.3",
+        "controls",
+        true,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "ctrl_click_right_click",
+        &["ctrlClickEmulatesRightClick"],
+        "26.3",
+        "26.3",
+        "controls",
+        false,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    ranged_setting(
+        "quit_shortcuts",
+        &["quitShortcuts"],
+        "26.3",
+        "26.3",
+        "controls",
+        false,
+        BOOL,
+        ValueEncoding::Bool,
+    ),
+    key_setting!("key.forward", "key_key.forward", "1.0", "26.3"),
+    key_setting!("key.left", "key_key.left", "1.0", "26.3"),
+    key_setting!("key.back", "key_key.back", "1.0", "26.3"),
+    key_setting!("key.right", "key_key.right", "1.0", "26.3"),
+    key_setting!("key.jump", "key_key.jump", "1.0", "26.3"),
+    key_setting!("key.sneak", "key_key.sneak", "1.0", "26.3"),
+    key_setting!("key.sprint", "key_key.sprint", "1.7.2", "26.3"),
+    key_setting!("key.inventory", "key_key.inventory", "1.0", "26.3"),
+    versioned_setting(
+        "key.swap_offhand",
+        &["key_key.swapOffhand", "key_key.swapHands"],
+        version_changes::SWAP_OFFHAND_KEYS,
+        "controls",
+        true,
+        SettingEditor::KeyBinding,
+        ValueEncoding::KeyBinding,
+    ),
+    key_setting!("key.drop", "key_key.drop", "1.0", "26.3"),
+    key_setting!("key.use", "key_key.use", "1.0", "26.3"),
+    key_setting!("key.attack", "key_key.attack", "1.0", "26.3"),
+    key_setting!("key.pick_item", "key_key.pickItem", "1.0", "26.3"),
+    key_setting!("key.chat", "key_key.chat", "1.0", "26.3"),
+    key_setting!("key.player_list", "key_key.playerlist", "1.0", "26.3"),
+    key_setting!("key.command", "key_key.command", "1.3.1", "26.3"),
+    key_setting!("key.screenshot", "key_key.screenshot", "1.7.2", "26.3"),
+    key_setting!(
+        "key.perspective",
+        "key_key.togglePerspective",
+        "1.7.2",
+        "26.3"
+    ),
+    key_setting!("key.fullscreen", "key_key.fullscreen", "1.7.3", "26.3"),
+    key_setting!("key.advancements", "key_key.advancements", "1.12", "26.3"),
+    key_setting!("key.smooth_camera", "key_key.smoothCamera", "1.7.2", "26.3"),
+    key_setting!(
+        "key.spectator_outlines",
+        "key_key.spectatorOutlines",
+        "1.8",
+        "26.3"
+    ),
+    key_setting!(
+        "key.save_toolbar",
+        "key_key.saveToolbarActivator",
+        "1.12",
+        "26.3"
+    ),
+    key_setting!(
+        "key.load_toolbar",
+        "key_key.loadToolbarActivator",
+        "1.12",
+        "26.3"
+    ),
+    key_setting!(
+        "key.social_interactions",
+        "key_key.socialInteractions",
+        "1.16.4",
+        "26.3"
+    ),
+    key_setting!(
+        "key.quick_actions",
+        "key_key.quickActions",
+        "1.21.6",
+        "26.3"
+    ),
+    key_setting!(
+        "key.spectator_hotbar",
+        "key_key.spectatorHotbar",
+        "1.21.9",
+        "26.3"
+    ),
+    key_setting!("key.friends", "key_key.friends", "26.2", "26.3"),
+    key_setting!("key.toggle_gui", "key_key.toggleGui", "1.21.11", "26.3"),
+    key_setting!(
+        "key.toggle_spectator_shader",
+        "key_key.toggleSpectatorShaderEffects",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!("key.hotbar.1", "key_key.hotbar.1", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.2", "key_key.hotbar.2", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.3", "key_key.hotbar.3", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.4", "key_key.hotbar.4", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.5", "key_key.hotbar.5", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.6", "key_key.hotbar.6", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.7", "key_key.hotbar.7", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.8", "key_key.hotbar.8", "1.7.2", "26.3"),
+    key_setting!("key.hotbar.9", "key_key.hotbar.9", "1.7.2", "26.3"),
+    key_setting!(
+        "key.debug.overlay",
+        "key_key.debug.overlay",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.modifier",
+        "key_key.debug.modifier",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.reload_chunks",
+        "key_key.debug.reloadChunk",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.hitboxes",
+        "key_key.debug.showHitboxes",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.clear_chat",
+        "key_key.debug.clearChat",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!("key.debug.crash", "key_key.debug.crash", "1.21.11", "26.3"),
+    key_setting!(
+        "key.debug.chunk_borders",
+        "key_key.debug.showChunkBorders",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.advanced_tooltips",
+        "key_key.debug.showAdvancedTooltips",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.copy_recreate_command",
+        "key_key.debug.copyRecreateCommand",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.spectate",
+        "key_key.debug.spectate",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.switch_game_mode",
+        "key_key.debug.switchGameMode",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.options",
+        "key_key.debug.debugOptions",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.focus_pause",
+        "key_key.debug.focusPause",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.dump_dynamic_textures",
+        "key_key.debug.dumpDynamicTextures",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.reload_resource_packs",
+        "key_key.debug.reloadResourcePacks",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.profiling",
+        "key_key.debug.profiling",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.copy_location",
+        "key_key.debug.copyLocation",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.dump_version",
+        "key_key.debug.dumpVersion",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.profiling_chart",
+        "key_key.debug.profilingChart",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.fps_charts",
+        "key_key.debug.fpsCharts",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.network_charts",
+        "key_key.debug.networkCharts",
+        "1.21.11",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.lightmap_texture",
+        "key_key.debug.lightmapTexture",
+        "26.1",
+        "26.3"
+    ),
+    key_setting!(
+        "key.debug.improved_transparency",
+        "key_key.debug.improvedTransparency",
+        "26.3",
+        "26.3"
+    ),
+];

packages/app-lib/src/api/instance/synced_options/game_options/catalog/data_versions.rs

@@ -0,0 +1,127 @@
+use phf::phf_map;
+
+/// https://minecraft.wiki/w/Module:Protocol_version/Versions
+/// Covers 1.10-pre1, which introduced the options version field, through
+/// 18w47a, the last snapshot without embedded `version.json` metadata.
+pub(in crate::api::instance) const LEGACY_DATA_VERSIONS: phf::Map<&str, u32> = phf_map! {
+    "18w47a" => 1912,
+    "18w46a" => 1910,
+    "18w45a" => 1908,
+    "18w44a" => 1907,
+    "18w43c" => 1903,
+    "18w43b" => 1902,
+    "18w43a" => 1901,
+    "1.13.2" => 1631,
+    "1.13.2-pre2" => 1630,
+    "1.13.2-pre1" => 1629,
+    "1.13.1" => 1628,
+    "1.13.1-pre2" => 1627,
+    "1.13.1-pre1" => 1626,
+    "18w33a" => 1625,
+    "18w32a" => 1623,
+    "18w31a" => 1622,
+    "18w30b" => 1621,
+    "18w30a" => 1620,
+    "1.13" => 1519,
+    "1.13-pre10" => 1518,
+    "1.13-pre9" => 1517,
+    "1.13-pre8" => 1516,
+    "1.13-pre7" => 1513,
+    "1.13-pre6" => 1512,
+    "1.13-pre5" => 1511,
+    "1.13-pre4" => 1504,
+    "1.13-pre3" => 1503,
+    "1.13-pre2" => 1502,
+    "1.13-pre1" => 1501,
+    "18w22c" => 1499,
+    "18w22b" => 1498,
+    "18w22a" => 1497,
+    "18w21b" => 1496,
+    "18w21a" => 1495,
+    "18w20c" => 1493,
+    "18w20b" => 1491,
+    "18w20a" => 1489,
+    "18w19b" => 1485,
+    "18w19a" => 1484,
+    "18w16a" => 1483,
+    "18w15a" => 1482,
+    "18w14b" => 1481,
+    "18w14a" => 1479,
+    "18w11a" => 1478,
+    "18w10d" => 1477,
+    "18w10c" => 1476,
+    "18w10b" => 1474,
+    "18w10a" => 1473,
+    "18w09a" => 1472,
+    "18w08b" => 1471,
+    "18w08a" => 1470,
+    "18w07c" => 1469,
+    "18w07b" => 1468,
+    "18w07a" => 1467,
+    "18w06a" => 1466,
+    "18w05a" => 1464,
+    "18w03b" => 1463,
+    "18w03a" => 1462,
+    "18w02a" => 1461,
+    "18w01a" => 1459,
+    "17w50a" => 1457,
+    "17w49b" => 1455,
+    "17w49a" => 1454,
+    "17w48a" => 1453,
+    "17w47b" => 1452,
+    "17w47a" => 1451,
+    "17w46a" => 1449,
+    "17w45b" => 1448,
+    "17w45a" => 1447,
+    "17w43b" => 1445,
+    "17w43a" => 1444,
+    "1.12.2" => 1343,
+    "1.12.2-pre2" => 1342,
+    "1.12.2-pre1" => 1341,
+    "1.12.1" => 1241,
+    "1.12.1-pre1" => 1240,
+    "17w31a" => 1239,
+    "1.12" => 1139,
+    "1.12-pre7" => 1138,
+    "1.12-pre6" => 1137,
+    "1.12-pre5" => 1136,
+    "1.12-pre4" => 1135,
+    "1.12-pre3" => 1134,
+    "1.12-pre2" => 1133,
+    "1.12-pre1" => 1132,
+    "17w18b" => 1131,
+    "17w18a" => 1130,
+    "17w17b" => 1129,
+    "17w17a" => 1128,
+    "17w16b" => 1127,
+    "17w16a" => 1126,
+    "17w15a" => 1125,
+    "17w14a" => 1124,
+    "17w13b" => 1123,
+    "17w13a" => 1122,
+    "17w06a" => 1022,
+    "1.11.2" => 922,
+    "1.11.1" => 921,
+    "16w50a" => 920,
+    "1.11" => 819,
+    "1.11-pre1" => 818,
+    "16w44a" => 817,
+    "16w43a" => 816,
+    "16w42a" => 815,
+    "16w41a" => 814,
+    "16w40a" => 813,
+    "16w39c" => 812,
+    "16w39b" => 811,
+    "16w39a" => 809,
+    "16w38a" => 807,
+    "16w36a" => 805,
+    "16w35a" => 803,
+    "16w33a" => 802,
+    "16w32b" => 801,
+    "16w32a" => 800,
+    "1.10.2" => 512,
+    "1.10.1" => 511,
+    "1.10" => 510,
+    "1.10-pre2" => 507,
+    "1.10-pre1" => 506,
+};