fix: 修复 CI 的 rustfmt 与 typos 报错

为 instance 同步命令定义之间补空行并补齐文件末尾换行；将 game-settings-modal 的 languages.ts（Minecraft 语言名数据）加入 typos 排除，避免语言代码被误判为拼写错误。

.cargo/config.toml

@@ -1,10 +1,3 @@
-# Windows has stack overflows when calling from Tauri, so we increase the default stack size used by the compiler
-[target."cfg(windows)"]
-rustflags = ["-C", "link-args=/STACK:16777220"]
-
-[target.x86_64-pc-windows-msvc]
-linker = "rust-lld"
-
 # Reproducible public-service defaults for downstream desktop builds. Private
 # Modrinth services remain disabled by Axolotl capabilities at runtime.
 [env]
@@ -12,5 +5,12 @@ MODRINTH_API_BASE_URL = "https://api.modrinth.com"
 MODRINTH_API_URL = "https://api.modrinth.com/v2/"
 MODRINTH_API_URL_V3 = "https://api.modrinth.com/v3/"
 MODRINTH_LAUNCHER_META_URL = "https://launcher-meta.modrinth.com/"
-MODRINTH_URL = "https://modrinth.com/"
 MODRINTH_SOCKET_URL = "wss://disabled.invalid/"
+MODRINTH_URL = "https://modrinth.com/"
+
+# Windows has stack overflows when calling from Tauri, so we increase the default stack size used by the compiler
+[target."cfg(windows)"]
+rustflags = ["-C", "link-args=/STACK:16777220"]
+
+[target.x86_64-pc-windows-msvc]
+linker = "rust-lld"

.github/workflows/build-on-tag.yml

@@ -351,6 +351,29 @@ jobs:
             release-check/update-server-catalog.json
           node scripts/axolotl/create-update-server-catalog.test.mjs
 
+      - name: Build complete skin-site update package
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          version="${GITHUB_REF_NAME#v}"
+          bundle_root="release-check/skin-site-update"
+          bundle_name="Starlight_Launcher_${version}_skin-site-update.zip"
+
+          mkdir -p "${bundle_root}/files"
+          gh release download "${GITHUB_REF_NAME}" --dir "${bundle_root}/files"
+          find "${bundle_root}/files" -maxdepth 1 -type f \
+            \( -name 'latest.json' -o -name '*_skin-site-update.zip' \) -delete
+
+          cp release-check/latest.json "${bundle_root}/latest.json"
+          cp release-check/update-server-catalog.json "${bundle_root}/update-server-catalog.json"
+          cp release-check/release.json "${bundle_root}/release.json"
+
+          (
+            cd "${bundle_root}"
+            zip -r -9 "../${bundle_name}" latest.json update-server-catalog.json release.json files
+          )
+          gh release upload "${GITHUB_REF_NAME}" "release-check/${bundle_name}" --clobber
+
       - name: Notify Update Server to publish release assets
         if: ${{ env.UPDATE_SERVER_URL != '' && env.UPDATE_SERVER_WEBHOOK_SECRET != '' }}
         env:

.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

.github/workflows/check-generic.yml

@@ -22,8 +22,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: taiki-e/install-action@fd2f5e3d644b484055ebf4268f474c565f148f25 # v2.81.9
+      - run: npx --yes tombi@1.6.1 lint
-        with:
+      - run: npx --yes tombi@1.6.1 fmt --check
-          tool: tombi@1.1.2
-      - run: tombi lint
-      - run: tombi fmt --check

.gitignore

@@ -38,6 +38,7 @@ node_modules
 npm-debug.log
 yarn-error.log
 testem.log
+replay_pid*.log
 /typings
 
 # System Files

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-beta12"
+version = "1.0.0-beta15"
 dependencies = [
  "ariadne",
  "async-minecraft-ping",
@@ -6899,7 +6945,7 @@ dependencies = [
 
 [[package]]
 name = "theseus_gui"
-version = "1.0.0-beta12"
+version = "1.0.0-beta15"
 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

@@ -20,9 +20,7 @@ ariadne = { path = "packages/ariadne" }
 async-minecraft-ping = { path = "packages/async-minecraft-ping" }
 async-recursion = "1.1.1"
 async-trait = "0.1.89"
-async-tungstenite = { version = "0.31.0", default-features = false, features = [
+async-tungstenite = { version = "0.31.0", default-features = false, features = ["futures-03-sink"] }
-  "futures-03-sink"
-] }
 async-walkdir = "2.1.0"
 async_zip = "0.0.18"
 base64 = "0.22.1"
@@ -32,9 +30,7 @@ bytes = "1.10.1"
 cc = "1.2.56"
 chardetng = "0.1.17"
 chrono = "0.4.42"
-cidre = { version = "0.15.0", default-features = false, features = [
+cidre = { version = "0.15.0", default-features = false, features = ["macos_15_0"] }
-  "macos_15_0"
-] }
 crc32fast = "1.5.0"
 daedalus = { path = "packages/daedalus" }
 dashmap = "6.1.0"
@@ -48,6 +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"
@@ -58,11 +55,7 @@ hmac = "0.12.1"
 http = "1.3.1"
 hyper = "1.7.0"
 hyper-util = "0.1.17"
-image = { version = "0.25.5", default-features = false, features = [
+image = { version = "0.25.5", default-features = false, features = ["jpeg", "png", "webp"] }
-  "jpeg",
-  "png",
-  "webp"
-] }
 indicatif = "0.18.0"
 itertools = "0.14.0"
 jsonwebtoken = "9.3.1"
@@ -88,13 +81,10 @@ rand = "=0.8.5"  # Locked on 0.8 until p256 updates to 0.9
 regex = "1.12.2"
 reqwest = { version = "0.12.24", default-features = false }
 rgb = "0.8.52"
-rustls = { version = "0.23.42", default-features = false, features = [
+rustls = { version = "0.23.42", default-features = false, features = ["ring", "std", "tls12"] }
-  "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"
@@ -127,10 +117,7 @@ tempfile = "3.23.0"
 theseus = { path = "packages/app-lib" }
 thiserror = "2.0.17"
 tokio = "1.47.1"
-tokio-rustls = { version = "0.26.4", default-features = false, features = [
+tokio-rustls = { version = "0.26.4", default-features = false, features = ["ring", "tls12"] }
-  "ring",
-  "tls12"
-] }
 tokio-util = "0.7.16"
 toml = "0.8.19"
 tracing = "0.1.41"
@@ -149,10 +136,7 @@ windows-core = "=0.61.2"  # Locked on 0.61 until webview2-com updates to 0.62
 winreg = "0.55.0"
 xz2 = { version = "0.1.7", features = ["static"] }
 zbus = "5.11.0"
-zhconv = { version = "0.4.1", default-features = false, features = [
+zhconv = { version = "0.4.1", default-features = false, features = ["compress", "opencc"] }
-  "compress",
-  "opencc"
-] }
 zip = { version = "6.0.0", default-features = false, features = [
   "bzip2",
   "deflate",

_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-beta12",
+	"version": "1.0.0-beta15",
 	"type": "module",
 	"scripts": {
 		"dev": "vite",
@@ -14,6 +14,9 @@
 		"test": "vue-tsc --noEmit && node --test \"src/**/*.test.ts\""
 	},
 	"dependencies": {
+		"@dnd-kit/core": "6.3.1",
+		"@dnd-kit/utilities": "3.2.2",
+		"@dnd-kit/vue": "^0.5.0",
 		"@lobehub/icons-static-svg": "1.94.0",
 		"@modrinth/api-client": "workspace:^",
 		"@modrinth/assets": "workspace:*",

apps/app-frontend/src/App.vue

@@ -8,6 +8,7 @@ import {
 	FlaskConicalIcon,
 	FolderOpenIcon,
 	HomeIcon,
+	ImagesIcon,
 	LeftArrowIcon,
 	LibraryIcon,
 	LogInIcon,
@@ -19,6 +20,7 @@ import {
 	SettingsIcon,
 	SpinnerIcon,
 	UserIcon,
+	UsersIcon,
 	WorldIcon,
 } from '@modrinth/assets'
 import {
@@ -66,6 +68,8 @@ import { hideAllPoppers } from 'floating-vue'
 import { computed, nextTick, onMounted, onUnmounted, provide, ref, watch } from 'vue'
 import { type RouteLocationNormalizedLoaded, RouterView, useRoute, useRouter } from 'vue-router'
 
+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 AppActionBar from '@/components/ui/AppActionBar.vue'
@@ -79,7 +83,6 @@ import MinecraftAuthErrorModal from '@/components/ui/minecraft-auth-error-modal/
 import MinecraftCrashModal from '@/components/ui/MinecraftCrashModal.vue'
 import AuthGrantFlowWaitModal from '@/components/ui/modal/AuthGrantFlowWaitModal.vue'
 import CurseForgeManualDownloadsModal from '@/components/ui/modal/CurseForgeManualDownloadsModal.vue'
-import TaggedModDownloadsModal from '@/components/instance/TaggedModDownloadsModal.vue'
 import InstallToPlayModal from '@/components/ui/modal/InstallToPlayModal.vue'
 import InstanceIconPickerModal from '@/components/ui/modal/InstanceIconPickerModal.vue'
 import JavaDownloadConfirmationModal from '@/components/ui/modal/JavaDownloadConfirmationModal.vue'
@@ -90,9 +93,9 @@ import NavButton from '@/components/ui/NavButton.vue'
 import NavRail from '@/components/ui/NavRail.vue'
 import OnboardingOverlay from '@/components/ui/onboarding/OnboardingOverlay.vue'
 import QuickInstanceSwitcher from '@/components/ui/QuickInstanceSwitcher.vue'
-import SplashScreen from '@/components/ui/SplashScreen.vue'
 import SkinSiteSessionFrame from '@/components/ui/SkinSiteSessionFrame.vue'
-import InstancePlayerModal from '@/components/instance/InstancePlayerModal.vue'
+import StartupAnnouncementModal from '@/components/ui/StartupAnnouncementModal.vue'
+import SplashScreen from '@/components/ui/SplashScreen.vue'
 import WindowControls from '@/components/ui/WindowControls.vue'
 import { useCheckDisableMouseover } from '@/composables/macCssFix.js'
 import { useDropImport } from '@/composables/useDropImport'
@@ -138,9 +141,9 @@ import {
 	isDev,
 	isElevated,
 	isNetworkMetered,
-	restartApp,
 	setRestartAfterPendingUpdate,
 } from '@/helpers/utils.js'
+import { installUiScale, setUiScale } from '@/helpers/ui-scale'
 import { start_join_server, start_join_singleplayer_world } from '@/helpers/worlds.ts'
 import i18n, { resolveInitialLocale } from '@/i18n.config'
 import {
@@ -312,6 +315,22 @@ const showOnboarding = ref(false)
 const onboardingMode = ref('main')
 const onboardingSettings = ref(null)
 const onboardingReplay = ref(false)
+
+// Expand the sidebar while the onboarding tour is visible so steps that point
+// at sidebar entries (account card, announcement, create instance) can find
+// their targets. The previous state is restored when the tour ends.
+let sidebarStateBeforeOnboarding: boolean | undefined
+watch(showOnboarding, (visible) => {
+	if (visible) {
+		sidebarStateBeforeOnboarding = sidebarToggled.value
+		sidebarToggled.value = true
+		setSidebarExpanded(true)
+	} else if (sidebarStateBeforeOnboarding !== undefined) {
+		sidebarToggled.value = sidebarStateBeforeOnboarding
+		setSidebarExpanded(sidebarStateBeforeOnboarding)
+		sidebarStateBeforeOnboarding = undefined
+	}
+})
 const nativeDecorations = ref(false)
 
 const os = ref('')
@@ -490,9 +509,16 @@ onMounted(async () => {
 	document.querySelector('body').addEventListener('auxclick', handleAuxClick)
 	window.addEventListener(DIRECT_LINKS_SYNCED_EVENT, handleDirectLinkSyncReport)
 
+	try {
+		await stateInitialization
+	} catch {
+		return
+	}
+
 	checkUpdates()
 	void warnIfRunningElevated()
 	startDirectLinkSync()
+	maybeShowStartupAnnouncement()
 })
 
 let directLinkSync: (() => Promise<void>) | undefined
@@ -741,6 +767,10 @@ const messages = defineMessages({
 		id: 'app.navigation.multiplayer',
 		defaultMessage: 'Multiplayer',
 	},
+	screenshots: {
+		id: 'app.navigation.screenshots',
+		defaultMessage: 'Screenshots',
+	},
 	downloads: {
 		id: 'app.navigation.downloads',
 		defaultMessage: 'Downloads',
@@ -1066,6 +1096,7 @@ async function setupApp() {
 		close_behavior,
 		developer_mode,
 		feature_flags,
+		ui_scale,
 	} = initialSettings
 
 	// Initialize locale from saved settings
@@ -1096,6 +1127,7 @@ async function setupApp() {
 	nativeDecorations.value = native_decorations
 	if (os.value !== 'MacOS') await getCurrentWindow().setDecorations(native_decorations)
 
+	setUiScale(ui_scale)
 	themeStore.setThemeState(theme)
 	await initializeSystemAccentColor()
 	themeStore.setAccentColor(accent_color)
@@ -1228,7 +1260,7 @@ 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
@@ -1264,6 +1296,9 @@ provide(
 )
 provide('previewMinecraftCrashModal', () => minecraftCrashModal.value?.showPreview())
 provide('showLauncherPopup', (_request: unknown) => {})
+provide('showStartupAnnouncement', () => startupAnnouncementModal.value?.show())
+
+installUiScale()
 
 const stateFailed = ref(false)
 stateInitialization
@@ -1533,6 +1568,33 @@ const updateToPlayModal = ref()
 
 const modrinthLoginFlowWaitModal = ref()
 
+const startupAnnouncementModal = ref<InstanceType<typeof StartupAnnouncementModal> | null>(null)
+const STARTUP_ANNOUNCEMENT_KEY = 'starlight-startup-announcement-seen-v1'
+
+function maybeShowStartupAnnouncement() {
+	let alreadySeen = false
+	try {
+		alreadySeen = localStorage.getItem(STARTUP_ANNOUNCEMENT_KEY) !== null
+	} catch (error) {
+		console.warn('Failed to read startup announcement flag', error)
+	}
+	if (alreadySeen) return
+
+	const modal = startupAnnouncementModal.value
+	if (!modal) {
+		// The modal component has not mounted yet; try again on the next tick.
+		void nextTick(maybeShowStartupAnnouncement)
+		return
+	}
+
+	modal.show()
+	try {
+		localStorage.setItem(STARTUP_ANNOUNCEMENT_KEY, '1')
+	} catch (error) {
+		console.warn('Failed to write startup announcement flag', error)
+	}
+}
+
 // ── Drop import system ──────────────────────────────────────────────────
 const dropImport = useDropImport({
 	notificationManager,
@@ -1701,6 +1763,7 @@ onMounted(() => {
 	setServerUpdateToPlayModal(updateToPlayModal.value)
 	void (async () => {
 		try {
+			await stateInitialization
 			const ready = await invoke<{
 				pending_crashes: { instance_id: string; uuid: string }[]
 				pending_commands: Parameters<typeof handleCommand>[0][]
@@ -2161,6 +2224,7 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 	<SplashScreen v-if="!stateFailed" ref="splashScreen" data-tauri-drag-region />
 	<SkinSiteSessionFrame v-if="stateInitialized" />
 	<InstancePlayerModal v-if="stateInitialized" />
+	<StartupAnnouncementModal ref="startupAnnouncementModal" />
 	<div id="teleports"></div>
 	<div
 		v-if="stateInitialized && themeStore.customBackgroundPath && !themeStore.transparentBackground"
@@ -2256,6 +2320,23 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 				>
 					<LibraryIcon />
 				</NavButton>
+				<NavButton
+					v-if="themeStore.featureFlags.multiplayer_in_app"
+					v-tooltip.right="formatMessage(messages.multiplayer)"
+					data-onboarding-id="nav-multiplayer"
+					to="/multiplayer"
+					:is-primary="(r) => r.path.startsWith('/multiplayer')"
+				>
+					<UsersIcon />
+				</NavButton>
+				<NavButton
+					v-tooltip.right="formatMessage(messages.screenshots)"
+					data-onboarding-id="nav-screenshots"
+					to="/screenshots"
+					:is-primary="(r) => r.path.startsWith('/screenshots')"
+				>
+					<ImagesIcon />
+				</NavButton>
 				<NavButton
 					v-tooltip.right="formatMessage(messages.lab)"
 					data-onboarding-id="nav-lab"
@@ -2423,9 +2504,13 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 				{{ formatMessage(messages.authUnreachableBody) }}
 			</Admonition>
 			<div class="page-transition-grid grid min-h-full">
-				<RouterView v-slot="{ Component, route }">
+				<RouterView v-slot="{ Component, route: currentRoute }">
 					<Transition name="page-slide" :css="themeStore.getFeatureFlag('page_transitions')">
-						<div v-if="Component" :key="getPageTransitionKey(route)" class="page-transition-layer">
+						<div
+							v-if="Component"
+							:key="getPageTransitionKey(currentRoute)"
+							class="page-transition-layer"
+						>
 							<Suspense @pending="onSuspensePending" @resolve="onSuspenseResolve">
 								<component :is="Component"></component>
 							</Suspense>
@@ -2465,7 +2550,10 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 			>
 				<div id="sidebar-teleport-target" class="sidebar-teleport-content contents"></div>
 				<div class="sidebar-default-content hidden" :class="{ 'sidebar-enabled': sidebarVisible }">
-					<div class="p-4 border-0 border-b-[1px] border-[--brand-gradient-border] border-solid">
+					<div
+						data-onboarding-id="sidebar-accounts"
+						class="p-4 border-0 border-b-[1px] border-[--brand-gradient-border] border-solid"
+					>
 						<h3 class="text-base text-primary font-medium m-0">
 							{{ formatMessage(messages.userInformation) }}
 						</h3>
@@ -2489,7 +2577,7 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 		:on-error-action="exportNotificationErrorLogs"
 		:error-action-label="formatMessage(messages.exportErrorLogs)"
 	/>
-	<MinecraftCrashModal ref="minecraftCrashModal" @error="handleError" />
+	<MinecraftCrashModal v-if="stateInitialized" ref="minecraftCrashModal" @error="handleError" />
 	<JavaDownloadConfirmationModal ref="javaDownloadConfirmationModal" />
 	<NewModal
 		ref="closeChoiceModal"
@@ -2577,7 +2665,7 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 		@install="handleContentInstallModpackInstall"
 		@cancel="handleContentInstallModpackInstallCancel"
 	/>
-	<TaggedModDownloadsModal />
+	<TaggedModDownloadsModal v-if="stateInitialized" />
 	<CurseForgeManualDownloadsModal
 		ref="contentInstallCurseForgeManualDownloadsModal"
 		@view-instance="handleContentInstallModpackDuplicateGoToInstance"

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

@@ -32,6 +32,357 @@ export const ANNOUNCEMENT_CHANGE_TYPES: readonly AnnouncementChangeType[] = [
 ]
 
 export const launcherAnnouncements: readonly LauncherAnnouncement[] = [
+	{
+		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',
+		publishedAt: '2026-10-01',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta6',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta6',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US':
+						'Fixed the onboarding tour skipping steps automatically, getting stuck, or not navigating between steps; the tour bubble no longer covers the left navigation bar.',
+					'zh-CN':
+						'修复新手导览自动跳过、卡住或不跳转的问题；导览气泡不再遮挡左侧导航栏。',
+				},
+				{
+					'en-US':
+						'Fixed the onboarding tour target on the minimal home layout.',
+					'zh-CN': '修复精简主页下导览目标找不到的问题。',
+				},
+			],
+			added: [
+				{
+					'en-US': 'Feature flag names in developer settings are now shown in Chinese.',
+					'zh-CN': '开发者设置中的功能开关名现在显示中文。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta5',
+		version: '1.0.1-beta5',
+		publishedAt: '2026-10-01',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta5',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta5',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'Reworked the onboarding tour, covering the home page, StarLight login, announcements, instance creation, discovery, skins, library, lab, downloads, and update settings in order.',
+					'zh-CN':
+						'重做了新手导览，依次介绍主页、StarLight 登录、公告、创建实例、发现内容、皮肤、实例库、实验室、下载与更新设置。',
+				},
+			],
+			fixed: [
+				{
+					'en-US':
+						'Fixed the developer feature flags page rendering blank.',
+					'zh-CN': '修复开发者“功能开关”页面空白的问题。',
+				},
+				{
+					'en-US':
+						'Fixed a build error that prevented the launcher from compiling.',
+					'zh-CN': '修复导致启动器无法编译的构建错误。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta4',
+		version: '1.0.1-beta4',
+		publishedAt: '2026-09-30',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta4',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta4',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US':
+						'Fixed a build error in 1.0.1-beta3 that prevented the launcher from compiling.',
+					'zh-CN': '修复 1.0.1-beta3 中导致启动器无法编译的构建错误。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta3',
+		version: '1.0.1-beta3',
+		publishedAt: '2026-09-30',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta3',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta3',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'Added a launcher UI scale setting under Appearance, which also helps when embedded pages are cut off.',
+					'zh-CN': '在“界面与外观”中新增启动器缩放设置，同时可缓解内嵌网页被裁切的问题。',
+				},
+				{
+					'en-US':
+						'Added a one-time welcome announcement on first launch, with an entry in the home sidebar.',
+					'zh-CN': '新增首次启动时的欢迎公告弹窗，并在主页侧栏提供入口。',
+				},
+			],
+			fixed: [
+				{
+					'en-US':
+						'Fixed the browse page going blank without a CurseForge API key; the navigation tabs now stay visible.',
+					'zh-CN': '修复未配置 CurseForge API Key 时浏览页整页空白的问题，导航栏现在保持可见。',
+				},
+				{
+					'en-US':
+						'Fixed the about page license links and the update changelog link to point at the correct repository.',
+					'zh-CN': '修复关于页许可证链接与更新日志链接，改为指向正确的仓库。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta2',
+		version: '1.0.1-beta2',
+		publishedAt: '2026-09-28',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta2',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta2',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'GitHub releases now include one complete update package for publishing to the StarLight skin site.',
+					'zh-CN': 'GitHub 发布现会生成一个可直接发布到 StarLight 皮肤站的完整更新包。',
+				},
+			],
+			fixed: [
+				{
+					'en-US':
+						'Improved the reliability of live logs and database switching.',
+					'zh-CN': '提高实时日志与数据库切换的可靠性。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.1-beta1',
+		version: '1.0.1-beta1',
+		publishedAt: '2026-09-27',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.1-beta1',
+			'zh-CN': 'Starlight Launcher 1.0.1-beta1',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'Added a one-time welcome announcement on first launch, covering the development team, the StarLight-only note, the rulebook update, and server connection addresses.',
+					'zh-CN':
+						'新增首次启动时的欢迎公告弹窗，包含开发团队、StarLight 专用说明、服规更新与服务器连接地址。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.0',
+		version: '1.0.0',
+		publishedAt: '2026-09-26',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.0',
+			'zh-CN': 'Starlight Launcher 1.0.0',
+		},
+		changes: {
+			added: [
+				{
+					'en-US':
+						'Enabled the built-in automatic updater. The launcher can now check for and install new versions from the update channel.',
+					'zh-CN': '启用内置自动更新，启动器现在可以从更新通道检查并安装新版本。',
+				},
+			],
+			fixed: [
+				{
+					'en-US':
+						'Fixed a crash on startup caused by the updater running before launcher state finished initializing.',
+					'zh-CN': '修复了更新器在启动器状态初始化完成前运行导致的启动崩溃。',
+				},
+			],
+		},
+	},
 	{
 		id: 'launcher-1.0.0-beta15',
 		version: '1.0.0-beta15',

apps/app-frontend/src/components/home/HomeAnnouncementEntry.vue

@@ -0,0 +1,33 @@
+<script setup lang="ts">
+import { NewspaperIcon, RightArrowIcon } from '@modrinth/assets'
+import { inject } from 'vue'
+
+const showAnnouncement = inject<(() => void) | undefined>('showStartupAnnouncement')
+
+function open() {
+	showAnnouncement?.()
+}
+</script>
+
+<template>
+	<section
+		data-onboarding-id="home-announcement"
+		class="flex min-w-0 flex-col gap-3 border-0 border-b-[1px] border-solid border-[--brand-gradient-border] p-4"
+	>
+		<button
+			type="button"
+			class="group flex w-full cursor-pointer flex-col gap-2 border-0 bg-transparent p-0 text-left"
+			@click="open"
+		>
+			<div class="flex items-center gap-2">
+				<NewspaperIcon class="size-4 shrink-0 text-secondary" aria-hidden="true" />
+				<h2 class="m-0 truncate text-lg">公告</h2>
+				<RightArrowIcon
+					class="ml-auto size-4 shrink-0 text-secondary transition-transform group-hover:translate-x-0.5"
+					aria-hidden="true"
+				/>
+			</div>
+			<p class="m-0 text-sm leading-relaxed text-secondary">点击查看最新公告</p>
+		</button>
+	</section>
+</template>

apps/app-frontend/src/components/home/HomeMinimal.vue

@@ -28,8 +28,8 @@ import { useNetworkStatus } from '@/composables/useNetworkStatus'
 import { process_listener } from '@/helpers/events'
 import { install_existing_instance, install_pack_to_existing_instance } from '@/helpers/install'
 import { kill, run } from '@/helpers/instance'
-import { get_by_instance_id } from '@/helpers/process'
 import { isInstanceLaunching } from '@/helpers/instance-launch-state'
+import { get_by_instance_id } from '@/helpers/process'
 import type { GameInstance } from '@/helpers/types'
 import { handleSevereError } from '@/store/error'
 
@@ -201,7 +201,7 @@ onUnmounted(() => {
 		data-onboarding-id="home-instances"
 		class="minimal-home-stage flex min-w-0 items-center justify-center px-6 pb-14 pt-8"
 	>
-		<div class="flex w-full max-w-3xl flex-col items-center text-center">
+		<div data-onboarding-id="home-widget-grid" class="flex w-full max-w-3xl flex-col items-center text-center">
 			<HomeGreeting :player-name="playerName" variant="minimal" />
 
 			<template v-if="selectedInstance">

apps/app-frontend/src/components/home/HomeRecentWorlds.vue

@@ -36,6 +36,7 @@ const props = withDefaults(
 		limit?: HomeRecentLimit
 	}>(),
 	{
+		dashboardSize: null,
 		limit: HOME_RECENT_DEFAULT_LIMIT,
 	},
 )
@@ -146,11 +147,17 @@ async function stopInstance(instance: GameInstance) {
 </script>
 
 <template>
-	<section class="home-recent-worlds flex min-w-0 min-h-0 h-full flex-col gap-3" :data-size="dashboardSize">
+	<section
+		class="home-recent-worlds flex min-w-0 min-h-0 h-full flex-col gap-3"
+		:data-size="dashboardSize"
+	>
 		<div class="home-widget-heading flex min-w-0 h-8 flex-none items-center gap-2">
 			<h2>{{ formatMessage(messages.recentTitle) }}</h2>
 		</div>
-		<div v-if="recentItems.length > 0" class="home-recent-list flex min-w-0 min-h-0 flex-1 flex-col gap-1 overflow-x-hidden overflow-y-auto pr-1">
+		<div
+			v-if="recentItems.length > 0"
+			class="home-recent-list flex min-w-0 min-h-0 flex-1 flex-col gap-1 overflow-x-hidden overflow-y-auto pr-1"
+		>
 			<template
 				v-for="item in recentItems"
 				:key="item.type === 'world' ? worldKey(item.world) : `${item.instance.id}:instance`"

apps/app-frontend/src/components/instance/HostedPackProgress.vue

@@ -1,6 +1,7 @@
 <script setup lang="ts">
-import { ProgressBar, defineMessages, useVIntl } from '@modrinth/ui'
+import { defineMessages, ProgressBar, useVIntl } from '@modrinth/ui'
 import { computed } from 'vue'
+
 import { injectDownloadManager } from '@/providers/download-manager'
 
 const props = defineProps<{ instanceId?: string; active?: boolean }>()

apps/app-frontend/src/components/instance/InstancePlayerModal.vue

@@ -14,13 +14,14 @@ import {
 import { users } from '@/helpers/auth'
 import { getInstanceMode } from '@/helpers/hosted-packs'
 import {
+	type InstancePlayer,
+	type PlayerChoice,
 	PlayerSelectionNavigatedAwayError,
 	registerInstancePlayerPicker,
 	saveInstancePlayer,
 	waitForSkinSiteSession,
-	type InstancePlayer,
-	type PlayerChoice,
 } from '@/helpers/instance-player'
+
 import { playerMessages as messages } from './instance-player-messages'
 
 const { formatMessage } = useVIntl()

apps/app-frontend/src/components/instance/InstancePlayerSettings.vue

@@ -1,12 +1,14 @@
 <script setup lang="ts">
 import { ButtonStyled, useVIntl } from '@modrinth/ui'
 import { onUnmounted, ref, watch } from 'vue'
+
 import {
 	chooseInstancePlayer,
 	getInstancePlayer,
-	onInstancePlayerChanged,
 	type InstancePlayer,
+	onInstancePlayerChanged,
 } from '@/helpers/instance-player'
+
 import { playerMessages as messages } from './instance-player-messages'
 
 const { formatMessage } = useVIntl()

apps/app-frontend/src/components/instance/TaggedModDownloadsModal.vue

@@ -1,10 +1,11 @@
 <script setup lang="ts">
-import { NewModal, ProgressBar, ButtonStyled, defineMessages, useVIntl } from '@modrinth/ui'
+import { ButtonStyled, defineMessages, NewModal, ProgressBar, useVIntl } from '@modrinth/ui'
-import { onMounted, onUnmounted, nextTick, ref, shallowRef } from 'vue'
+import { nextTick, onMounted, onUnmounted, ref, shallowRef } from 'vue'
 import { useRouter } from 'vue-router'
+
 import { loading_listener } from '@/helpers/events'
-import { progress_bars_list } from '@/helpers/state'
 import { onHostedPackAttemptStarted } from '@/helpers/hosted-packs'
+import { progress_bars_list } from '@/helpers/state'
 import {
 	createTaggedModProgress,
 	type TaggedProgressEvent,

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

@@ -12,10 +12,14 @@
 				>
 					{{ formatMessage(messages.score, { score }) }}
 				</span>
-				<span class="shrink-0 whitespace-nowrap rounded-full bg-surface-3 px-2 py-0.5 tabular-nums text-secondary">
+				<span
+					class="shrink-0 whitespace-nowrap rounded-full bg-surface-3 px-2 py-0.5 tabular-nums text-secondary"
+				>
 					{{ formatMessage(messages.highestLevel, { level: highestLevel + 1 }) }}
 				</span>
-				<span class="shrink-0 whitespace-nowrap rounded-full bg-surface-3 px-2 py-0.5 tabular-nums text-secondary">
+				<span
+					class="shrink-0 whitespace-nowrap rounded-full bg-surface-3 px-2 py-0.5 tabular-nums text-secondary"
+				>
 					{{ formatMessage(messages.best, { score: bestScore }) }}
 				</span>
 				<NewButton type="base" size="sm" class="shrink-0" @click="settleGame">
@@ -80,7 +84,10 @@
 					</div>
 				</div>
 			</Transition>
-			<div v-if="gameOver && !endedManually" class="tide-drain pointer-events-none absolute inset-0 z-20" />
+			<div
+				v-if="gameOver && !endedManually"
+				class="tide-drain pointer-events-none absolute inset-0 z-20"
+			/>
 			<Transition name="panel">
 				<div
 					v-if="gameOver"
@@ -115,16 +122,26 @@
 						</div>
 						<div class="grid w-full min-w-0 grid-cols-3 gap-1.5">
 							<div class="flex min-w-0 flex-col items-center rounded-lg bg-surface-3 px-1 py-1">
-								<span class="text-[9px] text-secondary">{{ formatMessage(messages.levelLabel) }}</span>
+								<span class="text-[9px] text-secondary">{{
-								<span class="text-sm font-bold tabular-nums text-contrast">{{ highestLevel + 1 }}</span>
+									formatMessage(messages.levelLabel)
+								}}</span>
+								<span class="text-sm font-bold tabular-nums text-contrast">{{
+									highestLevel + 1
+								}}</span>
 							</div>
 							<div class="flex min-w-0 flex-col items-center rounded-lg bg-surface-3 px-1 py-1">
-								<span class="text-[9px] text-secondary">{{ formatMessage(messages.bestLabel) }}</span>
+								<span class="text-[9px] text-secondary">{{
+									formatMessage(messages.bestLabel)
+								}}</span>
 								<span class="text-sm font-bold tabular-nums text-contrast">{{ bestScore }}</span>
 							</div>
 							<div class="flex min-w-0 flex-col items-center rounded-lg bg-surface-3 px-1 py-1">
-								<span class="text-[9px] text-secondary">{{ formatMessage(messages.overtimesLabel) }}</span>
+								<span class="text-[9px] text-secondary">{{
-								<span class="text-sm font-bold tabular-nums text-contrast">{{ overtimeCount }}</span>
+									formatMessage(messages.overtimesLabel)
+								}}</span>
+								<span class="text-sm font-bold tabular-nums text-contrast">{{
+									overtimeCount
+								}}</span>
 							</div>
 						</div>
 						<div class="flex flex-wrap justify-center gap-2">
@@ -150,8 +167,8 @@ import blueStar from '@/assets/stars/blue.png'
 import greenStar from '@/assets/stars/green.png'
 import pinkStar from '@/assets/stars/pink.png'
 import redStar from '@/assets/stars/red.png'
-import yellowStar from '@/assets/stars/yellow.png'
 import superStar from '@/assets/stars/super.png'
+import yellowStar from '@/assets/stars/yellow.png'
 
 interface Piece {
 	id: number
@@ -396,7 +413,14 @@ function mergePieces(a: Piece, b: Piece) {
 	score.value += points[level]
 	highestLevel.value = Math.max(highestLevel.value, level)
 	const isRainbow = level === colors.length - 1
-	spawnBurst(x, y, isRainbow ? rainbowColors : [colors[level]], 10 + level * 3, 130 + level * 20, 3.4)
+	spawnBurst(
+		x,
+		y,
+		isRainbow ? rainbowColors : [colors[level]],
+		10 + level * 3,
+		130 + level * 20,
+		3.4,
+	)
 	spawnShockwave(x, y, 46 + level * 26, 'rgba(255, 255, 255, 0.9)', Math.min(3, 1.4 + level * 0.3))
 	shakePower = Math.max(shakePower, Math.min(2 + level * 1.2, 7))
 	spawnFloater(x, y, `+${points[level]}`, 15 + level * 3, colors[level])
@@ -423,7 +447,14 @@ function easeOutBack(t: number) {
 	return 1 + c3 * Math.pow(t - 1, 3) + c1 * Math.pow(t - 1, 2)
 }
 
-function spawnBurst(x: number, y: number, palette: string[], count: number, speed: number, size: number) {
+function spawnBurst(
+	x: number,
+	y: number,
+	palette: string[],
+	count: number,
+	speed: number,
+	size: number,
+) {
 	for (let i = 0; i < count; i++) {
 		if (particles.length >= 260) return
 		const angle = Math.random() * Math.PI * 2
@@ -508,7 +539,8 @@ function update(delta: number) {
 	if (overtimeStartAt >= 0) {
 		const overtimeElapsed = elapsed - overtimeStartAt
 		if (overtimeElapsed < 0.8) {
-			surfaceRatio = overtimeFromRatio + (0.05 - overtimeFromRatio) * easeInOutCubic(overtimeElapsed / 0.8)
+			surfaceRatio =
+				overtimeFromRatio + (0.05 - overtimeFromRatio) * easeInOutCubic(overtimeElapsed / 0.8)
 		} else {
 			overtimeStartAt = -1
 		}
@@ -670,17 +702,7 @@ function prepareBallSprite(src: string, level: number) {
 		sprite.height = Math.max(1, Math.round(bounds.h * scale))
 		const ctx = sprite.getContext('2d')
 		if (!ctx) return
-		ctx.drawImage(
+		ctx.drawImage(image, bounds.x, bounds.y, bounds.w, bounds.h, 0, 0, sprite.width, sprite.height)
-			image,
-			bounds.x,
-			bounds.y,
-			bounds.w,
-			bounds.h,
-			0,
-			0,
-			sprite.width,
-			sprite.height,
-		)
 		ballSprites[level] = sprite
 	}
 	image.src = src
@@ -692,9 +714,7 @@ function drawMergePiece(piece: Piece) {
 	const spawnProgress = Math.min(1, (elapsed - piece.spawnAt) / 0.22)
 	const spawnScale = spawnProgress >= 1 ? 1 : easeOutBack(spawnProgress)
 	const radius =
-		piece.radius *
+		piece.radius * spawnScale * (isRainbow ? 1 + 0.05 * Math.sin(elapsed * 3.2 + piece.id) : 1)
-		spawnScale *
-		(isRainbow ? 1 + 0.05 * Math.sin(elapsed * 3.2 + piece.id) : 1)
 	context.save()
 	context.translate(piece.x, piece.y)
 	const hue = (elapsed * 55) % 360
@@ -792,9 +812,7 @@ function draw() {
 	context.beginPath()
 	for (let x = 0; x <= width; x += 8) {
 		const waveY =
-			surfaceY +
+			surfaceY + Math.sin(x * 0.045 + elapsed * 1.8) * 2.5 + Math.sin(x * 0.013 + elapsed * 0.9) * 2
-			Math.sin(x * 0.045 + elapsed * 1.8) * 2.5 +
-			Math.sin(x * 0.013 + elapsed * 0.9) * 2
 		if (x === 0) context.moveTo(x, waveY)
 		else context.lineTo(x, waveY)
 	}
@@ -807,7 +825,12 @@ function draw() {
 		const progress = Math.min(1, (elapsed - waveStart) / 0.8)
 		const waveY = height * (1 - progress)
 		const bandHeight = Math.max(22, height * 0.1)
-		const gradient = context.createLinearGradient(0, waveY - bandHeight, 0, waveY + bandHeight * 0.5)
+		const gradient = context.createLinearGradient(
+			0,
+			waveY - bandHeight,
+			0,
+			waveY + bandHeight * 0.5,
+		)
 		gradient.addColorStop(0, 'rgba(255, 255, 255, 0)')
 		gradient.addColorStop(0.55, 'rgba(96, 178, 255, 0.5)')
 		gradient.addColorStop(1, 'rgba(255, 255, 255, 0)')

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

@@ -11,8 +11,8 @@ import {
 	StyledInput,
 	useVIntl,
 } from '@modrinth/ui'
-import { save } from '@tauri-apps/plugin-dialog'
 import { join } from '@tauri-apps/api/path'
+import { save } from '@tauri-apps/plugin-dialog'
 import { readDir, stat } from '@tauri-apps/plugin-fs'
 import { ref } from 'vue'
 

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

@@ -20,8 +20,8 @@ import { process_listener } from '@/helpers/events'
 import { install_existing_instance, install_pack_to_existing_instance } from '@/helpers/install'
 import { kill, run } from '@/helpers/instance'
 import { getDisplayInstanceIcon } from '@/helpers/instance-icons'
-import { get_by_instance_id } from '@/helpers/process'
 import { isInstanceLaunching } from '@/helpers/instance-launch-state'
+import { get_by_instance_id } from '@/helpers/process'
 import { showInstanceInFolder } from '@/helpers/utils.js'
 import { handleSevereError } from '@/store/error.js'
 
@@ -98,7 +98,7 @@ const checkProcess = async () => {
 	if (Array.isArray(runningProcesses)) internalPlaying.value = runningProcesses.length > 0
 }
 
-const play = async (e, context) => {
+const play = async (e) => {
 	e?.stopPropagation()
 	if (loading.value) return
 	await run(props.instance.id).catch(async (err) => {
@@ -111,7 +111,7 @@ const play = async (e, context) => {
 	await checkProcess()
 }
 
-const stop = async (e, context) => {
+const stop = async (e) => {
 	e?.stopPropagation()
 	await kill(props.instance.id).catch(handleError)
 	await checkProcess()
@@ -205,7 +205,7 @@ onUnmounted(() => unlisten())
 								: formatMessage(isPlaying ? messages.launchAnother : commonMessages.playButton)
 						"
 						:disabled="offline && !installed"
-						@click="(e) => play(e, 'InstanceCard')"
+						@click="play"
 						@mousehover="checkProcess"
 					>
 						<!-- Translate for optical centering -->
@@ -295,7 +295,7 @@ onUnmounted(() => unlisten())
 								'scale-75 opacity-0 transition-all group-hover:scale-100 group-hover:opacity-100':
 									!disabled,
 							}"
-							@click="(e) => play(e, 'InstanceCard')"
+							@click="play"
 							@mousehover="checkProcess"
 						>
 							<PlayIcon class="translate-x-[1px]" />

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

@@ -522,7 +522,7 @@ async function copyShareUrl(): Promise<void> {
 	}
 }
 
-function _openAIAnalysis(): void {
+function openAIAnalysis(): void {
 	if (!lastAnalysis?.combined_log) {
 		notifyNoLogContent()
 		return
@@ -603,7 +603,7 @@ onUnmounted(() => {
 	unlistenProcess?.()
 })
 
-defineExpose({ handleLaunchError, handleWarning, isLaunchFailure, showPreview, openAIAnalysis: _openAIAnalysis })
+defineExpose({ handleLaunchError, handleWarning, isLaunchFailure, showPreview, openAIAnalysis })
 </script>
 
 <template>

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/SkinSiteSessionFrame.vue

@@ -1,6 +1,5 @@
 <script setup lang="ts">
 import { onMounted, onUnmounted, ref, watch } from 'vue'
-import { clearHostedSession } from '@/helpers/hosted-packs'
 
 import {
 	receiveSkinSiteMessage,
@@ -10,6 +9,7 @@ import {
 	skinSiteStatus,
 	skinSiteUser,
 } from '@/composables/skin-site-session'
+import { clearHostedSession } from '@/helpers/hosted-packs'
 
 const frame = ref<HTMLIFrameElement>()
 let lastMessage = 0

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

@@ -0,0 +1,134 @@
+<script setup lang="ts">
+import { ExternalIcon, UsersIcon, XIcon } from '@modrinth/assets'
+import { Avatar, ButtonStyled, NewModal } from '@modrinth/ui'
+import { openUrl } from '@tauri-apps/plugin-opener'
+import { ref } from 'vue'
+
+import { teamMembers } from '@/data/about'
+
+const modal = ref<InstanceType<typeof NewModal>>()
+
+const SERVER_IPS: { label: string; host: string }[] = [
+	{ label: '直连 IPv4', host: 'slv4.starlight.cool' },
+	{ label: '直连 IPv6', host: 'slv6.starlight.cool' },
+	{ label: '北方代理 IPv4', host: 'north.starlight.cool' },
+	{ label: '南方代理 IPv4', host: 'south.starlight.cool' },
+	{ label: '美国代理 IPv4', host: 'usa.starlight.cool' },
+]
+
+const RULES_URL = 'https://kdocs.cn/l/cmT6lVdryHJu'
+const QQ_GROUP = '535392227'
+
+function show() {
+	modal.value?.show()
+}
+
+function hide() {
+	modal.value?.hide()
+}
+
+function openLink(url: string) {
+	void openUrl(url)
+}
+
+defineExpose({ show })
+</script>
+
+<template>
+	<NewModal ref="modal" header="欢迎使用 Starlight Launcher" width="640px" max-width="640px">
+		<div class="flex min-w-0 flex-col gap-5">
+			<!-- 1. 开发组 -->
+			<section class="flex flex-col gap-2">
+				<h3 class="m-0 flex items-center gap-2 text-sm font-semibold text-contrast">
+					<UsersIcon class="size-4 text-secondary" />
+					开发团队
+				</h3>
+				<p class="m-0 text-sm text-secondary">
+					本启动器由
+					<span class="font-semibold text-contrast">Ax_Tps</span>
+					和
+					<span class="font-semibold text-contrast">Disy920</span>
+					基于 Axolotl 开发。
+				</p>
+				<div class="grid gap-3 sm:grid-cols-2">
+					<a
+						v-for="member in teamMembers"
+						:key="member.name"
+						:href="member.url ?? undefined"
+						target="_blank"
+						rel="noopener noreferrer"
+						class="flex min-w-0 items-center gap-3 rounded-xl bg-surface-4 p-3 transition-colors hover:bg-surface-5"
+						@click.prevent="member.url && openLink(member.url)"
+					>
+						<Avatar :src="member.avatarUrl" :alt="member.name" size="2.5rem" circle no-shadow />
+						<span class="min-w-0 flex-1 truncate font-semibold text-contrast">{{ member.name }}</span>
+						<ExternalIcon v-if="member.url" class="size-4 shrink-0 text-secondary" />
+					</a>
+				</div>
+			</section>
+
+			<!-- 2. SLS 专属 -->
+			<section class="flex flex-col gap-2">
+				<h3 class="m-0 text-sm font-semibold text-contrast">Starlight 专用启动器</h3>
+				<p class="m-0 text-sm text-secondary">
+					该启动器为 Starlight 专用。如果您还未加入 StarLight，请前往我们的 QQ 审核群
+					<button
+						type="button"
+						class="cursor-pointer border-0 bg-transparent p-0 font-semibold text-brand underline"
+						@click="openLink(`https://qm.qq.com/q/${QQ_GROUP}`)"
+					>
+						{{ QQ_GROUP }}
+					</button>
+					。
+				</p>
+			</section>
+
+			<!-- 3. 服规更新 -->
+			<section class="flex flex-col gap-2">
+				<h3 class="m-0 text-sm font-semibold text-contrast">StarLight 总则章程更新</h3>
+				<p class="m-0 text-sm text-secondary">
+					StarLight 总则章程（即“服规”）更新至第 15 版。该版服规进一步完善与严格了聚落建立、改组、招新与运营的全链条要求，请大家注意阅读并遵守！本版服规自
+					2026 年 9 月 27 日 0 点起开始试行。
+				</p>
+				<button
+					type="button"
+					class="flex w-fit cursor-pointer items-center gap-1 border-0 bg-transparent p-0 text-sm font-semibold text-brand underline"
+					@click="openLink(RULES_URL)"
+				>
+					查看服规链接
+					<ExternalIcon class="size-3.5" />
+				</button>
+			</section>
+
+			<!-- 4. 服务器连接 -->
+			<section class="flex flex-col gap-2">
+				<h3 class="m-0 text-sm font-semibold text-contrast">服务器连接</h3>
+				<p class="m-0 text-sm text-secondary">服务器目前下列几项 IP 可用：</p>
+				<ul class="m-0 flex flex-col gap-1 pl-5 text-sm text-secondary">
+					<li v-for="ip in SERVER_IPS" :key="ip.host">
+						<span class="text-contrast">{{ ip.label }}</span>
+						：<code class="text-brand">{{ ip.host }}</code>
+					</li>
+				</ul>
+				<p class="m-0 text-sm text-secondary">
+					请注意，我们优先推荐您尝试直连 IP（包括 v4 和 v6，哪个可用用哪个）。若没有出现高延迟或延迟波动严重的问题，尽量避免使用代理
+					IP（代理 IP 是流量计费的，使用会给服务器带来更大的经济压力）。
+				</p>
+				<p class="m-0 text-sm text-secondary">
+					若必须使用代理 IP，按以往经验，河北（含）以北的我国省份，在选用代理 IP 时建议优先选用北方代理，否则请使用南方代理。
+				</p>
+			</section>
+		</div>
+
+		<template #actions>
+			<div class="flex justify-end">
+				<ButtonStyled color="brand">
+					<button @click="hide">
+						<XIcon />
+						我知道了
+					</button>
+				</ButtonStyled>
+			</div>
+		</template>
+	</NewModal>
+</template>

apps/app-frontend/src/components/ui/announcement/UpdateAnnouncementHistory.vue

@@ -61,7 +61,7 @@ const historyAnnouncements = computed(() =>
 			<UpdateAnnouncementContent
 				:announcement="currentAnnouncement"
 				:version="currentVersion"
-				:external-url="currentAnnouncement?.externalUrl ?? AxolotlBrandConfig.website"
+				:external-url="currentAnnouncement?.externalUrl ?? AxolotlBrandConfig.releasesUrl"
 			/>
 		</div>
 
@@ -102,7 +102,7 @@ const historyAnnouncements = computed(() =>
 						<UpdateAnnouncementContent
 							:announcement="announcement"
 							:show-header="false"
-							:external-url="announcement.externalUrl"
+							:external-url="announcement.externalUrl ?? `${AxolotlBrandConfig.releasesUrl}/tag/v${announcement.version}`"
 						/>
 					</div>
 				</Accordion>

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/ConfirmDeleteInstanceModal.vue

@@ -67,6 +67,7 @@ withDefaults(
 	}>(),
 	{
 		count: 1,
+		symlinkTarget: null,
 	},
 )
 

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

@@ -127,7 +127,7 @@ interface IconBackground {
 	style: Record<string, string>
 }
 
-function background(
+function makeBackground(
 	id: string,
 	name: MessageDescriptor,
 	top: string,
@@ -171,16 +171,16 @@ const backgrounds = [
 			backgroundSize: '16px 16px',
 		},
 	} satisfies IconBackground,
-	background('grass', backgroundNames.grass, '#7fc95b', '#2f7d32'),
+	makeBackground('grass', backgroundNames.grass, '#7fc95b', '#2f7d32'),
-	background('ocean', backgroundNames.ocean, '#55b7ff', '#3157c8'),
+	makeBackground('ocean', backgroundNames.ocean, '#55b7ff', '#3157c8'),
-	background('amethyst', backgroundNames.amethyst, '#c084fc', '#6d28d9'),
+	makeBackground('amethyst', backgroundNames.amethyst, '#c084fc', '#6d28d9'),
-	background('sunset', backgroundNames.sunset, '#ffba52', '#e94b64'),
+	makeBackground('sunset', backgroundNames.sunset, '#ffba52', '#e94b64'),
-	background('cherry', backgroundNames.cherry, '#ff9ec4', '#b93670'),
+	makeBackground('cherry', backgroundNames.cherry, '#ff9ec4', '#b93670'),
-	background('nether', backgroundNames.nether, '#ef5a46', '#6d1717'),
+	makeBackground('nether', backgroundNames.nether, '#ef5a46', '#6d1717'),
-	background('slime', backgroundNames.slime, '#b6ee55', '#44972f'),
+	makeBackground('slime', backgroundNames.slime, '#b6ee55', '#44972f'),
-	background('deep-dark', backgroundNames.deepDark, '#245369', '#0c1f2b'),
+	makeBackground('deep-dark', backgroundNames.deepDark, '#245369', '#0c1f2b'),
-	background('stone', backgroundNames.stone, '#aeb5bd', '#525b66'),
+	makeBackground('stone', backgroundNames.stone, '#aeb5bd', '#525b66'),
-	background('midnight', backgroundNames.midnight, '#4d5f8f', '#171b2d'),
+	makeBackground('midnight', backgroundNames.midnight, '#4d5f8f', '#171b2d'),
 ]
 
 const { formatMessage } = useVIntl()

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/OnboardingOverlay.vue

@@ -170,7 +170,7 @@ const {
 	top: auto !important;
 	right: 0;
 	bottom: 0;
-	left: 0 !important;
+	left: var(--left-bar-width, 4rem) !important;
 	z-index: 2;
 	width: auto;
 	min-height: 0;

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',
@@ -276,6 +312,48 @@ export const onboardingMessages = defineMessages({
 	},
 	skip: { id: 'app.onboarding.action.skip', defaultMessage: 'Leave the tour' },
 	mascotAlt: { id: 'app.onboarding.mascot-alt', defaultMessage: 'Starlight guide' },
+	homeIntroTitle: { id: 'app.onboarding.home-intro.title', defaultMessage: 'Welcome home' },
+	homeIntroDescription: {
+		id: 'app.onboarding.home-intro.description',
+		defaultMessage:
+			'This is your home page. It shows your instances, recent activity, and quick shortcuts to get playing.',
+	},
+	accountLoginTitle: {
+		id: 'app.onboarding.account-login.title',
+		defaultMessage: 'Sign in to StarLight',
+	},
+	accountLoginDescription: {
+		id: 'app.onboarding.account-login.description',
+		defaultMessage:
+			'Sign in to the StarLight skin site here to use your StarLight players, install hosted modpacks, and sync your account.',
+	},
+	announcementTitle: {
+		id: 'app.onboarding.announcement.title',
+		defaultMessage: 'Latest announcements',
+	},
+	announcementDescription: {
+		id: 'app.onboarding.announcement.description',
+		defaultMessage:
+			'Open the announcement entry in the sidebar to read the latest news, rules, and server notices.',
+	},
+	createStarlightTitle: {
+		id: 'app.onboarding.create-starlight.title',
+		defaultMessage: 'Create a StarLight instance',
+	},
+	createStarlightDescription: {
+		id: 'app.onboarding.create-starlight.description',
+		defaultMessage:
+			'Use Create new instance here. A StarLight instance installs the server-selected modpack and versions, then keeps them updated before each launch.',
+	},
+	settingsUpdatesTitle: {
+		id: 'app.onboarding.settings-updates.title',
+		defaultMessage: 'Stay up to date',
+	},
+	settingsUpdatesDescription: {
+		id: 'app.onboarding.settings-updates.description',
+		defaultMessage:
+			'The Updates tab controls the update channel, checks for new launcher versions, and shows the changelog.',
+	},
 })
 
 const step = (
@@ -331,20 +409,33 @@ const settingsTourSteps: Array<[string, string, MessageDescriptor, MessageDescri
 
 export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 	main: [
-		step(
+		inspect(
-			'welcome',
+			'home-intro',
-			'manual',
+			'home-widget-grid',
-			copy(
+			onboardingMessages.homeIntroTitle,
-				onboardingMessages.welcomeTitle,
+			onboardingMessages.homeIntroDescription,
-				onboardingMessages.welcomeDescription,
-				onboardingMessages.start,
-			),
 		),
 		inspect(
-			'home-layout-switch',
+			'account-login',
-			'home-layout-switch',
+			'sidebar-accounts',
-			onboardingMessages.homeLayoutTitle,
+			onboardingMessages.accountLoginTitle,
-			onboardingMessages.homeLayoutDescription,
+			onboardingMessages.accountLoginDescription,
+		),
+		inspect(
+			'announcement',
+			'home-announcement',
+			onboardingMessages.announcementTitle,
+			onboardingMessages.announcementDescription,
+		),
+		step(
+			'create-starlight',
+			'navigate',
+			copy(
+				onboardingMessages.createStarlightTitle,
+				onboardingMessages.createStarlightDescription,
+				onboardingMessages.clickCreate,
+			),
+			control('create-instance', '/create'),
 		),
 		step(
 			'discover-navigation',
@@ -354,7 +445,7 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 				onboardingMessages.discoverDescription,
 				onboardingMessages.clickDiscover,
 			),
-			control('nav-discover', '/browse/modpack'),
+			control('nav-discover', '/browse'),
 		),
 		inspect(
 			'discover-content',
@@ -362,22 +453,6 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 			onboardingMessages.browseTitle,
 			onboardingMessages.browseDescription,
 		),
-		step(
-			'discover-favorites-navigation',
-			'navigate',
-			copy(
-				onboardingMessages.favoritesTitle,
-				onboardingMessages.favoritesDescription,
-				onboardingMessages.clickFavorites,
-			),
-			control('browse-favorites-tab', '/browse/favorites'),
-		),
-		inspect(
-			'discover-favorites-content',
-			'browse-favorites-content',
-			onboardingMessages.favoritesTitle,
-			onboardingMessages.favoritesDescription,
-		),
 		step(
 			'skins-navigation',
 			'navigate',
@@ -394,6 +469,22 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 			onboardingMessages.skinsPageTitle,
 			onboardingMessages.skinsPageDescription,
 		),
+		step(
+			'library-navigation',
+			'navigate',
+			copy(
+				onboardingMessages.libraryTitle,
+				onboardingMessages.libraryDescription,
+				onboardingMessages.clickLibrary,
+			),
+			control('nav-library', '/library'),
+		),
+		inspect(
+			'library-content',
+			'library-content',
+			onboardingMessages.libraryPageTitle,
+			onboardingMessages.libraryPageDescription,
+		),
 		step(
 			'lab-navigation',
 			'navigate',
@@ -428,7 +519,7 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 		),
 		step(
 			'settings-navigation',
-			'activate',
+			'navigate',
 			copy(
 				onboardingMessages.settingsTitle,
 				onboardingMessages.settingsDescription,
@@ -436,95 +527,15 @@ export const onboardingTours: Record<OnboardingMode, OnboardingStep[]> = {
 			),
 			control('nav-settings', '/settings'),
 		),
-		...settingsTourSteps.map(([id, targetId, title, description], index) =>
-			step(id, 'activate', copy(title, description, onboardingMessages.clickTab), {
-				...control(targetId),
-				closeSettingsAfter: index === settingsTourSteps.length - 1,
-			}),
-		),
 		step(
-			'library-navigation',
+			'settings-updates',
-			'navigate',
-			copy(
-				onboardingMessages.libraryTitle,
-				onboardingMessages.libraryDescription,
-				onboardingMessages.clickLibrary,
-			),
-			control('nav-library', '/library'),
-		),
-		inspect(
-			'library-content',
-			'library-content',
-			onboardingMessages.libraryPageTitle,
-			onboardingMessages.libraryPageDescription,
-		),
-		step(
-			'create-instance',
-			'navigate',
-			copy(
-				onboardingMessages.createTitle,
-				onboardingMessages.createDescription,
-				onboardingMessages.clickCreate,
-			),
-			control('create-instance', '/create'),
-		),
-		inspect(
-			'creation-instance-mode',
-			'creation-instance-mode',
-			onboardingMessages.instanceModeTitle,
-			onboardingMessages.instanceModeDescription,
-		),
-		step(
-			'creation-flow',
 			'activate',
 			copy(
-				onboardingMessages.creationTitle,
+				onboardingMessages.settingsUpdatesTitle,
-				onboardingMessages.creationDescription,
+				onboardingMessages.settingsUpdatesDescription,
-				onboardingMessages.clickCreationMethod,
+				onboardingMessages.clickTab,
 			),
-			{
+			control('settings-tab-updates'),
-				targetId: 'creation-methods',
-				branchByTarget: {
-					'creation-method-starlight': { next: 'complete' },
-					'creation-method-custom': { creationPath: 'custom', next: 'creation-name' },
-					'creation-method-import': { next: 'complete' },
-				},
-			},
-		),
-		inspect(
-			'creation-name',
-			'creation-name',
-			onboardingMessages.creationNameTitle,
-			onboardingMessages.creationNameDescription,
-		),
-		inspect(
-			'creation-loader',
-			'creation-loader',
-			onboardingMessages.creationLoaderTitle,
-			onboardingMessages.creationLoaderDescription,
-		),
-		step(
-			'creation-version',
-			'inspect',
-			copy(
-				onboardingMessages.creationVersionTitle,
-				onboardingMessages.creationVersionDescription,
-				onboardingMessages.continueArea,
-			),
-			{
-				targetId: 'creation-game-version',
-				nextByCreationPath: { custom: 'creation-confirm' },
-			},
-		),
-		step(
-			'creation-confirm',
-			'inspect',
-			copy(
-				onboardingMessages.creationConfirmTitle,
-				onboardingMessages.creationConfirmDescription,
-				onboardingMessages.finishArea,
-			),
-			{ targetId: 'creation-confirm' },
 		),
 	],
 	instance: [
@@ -534,15 +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

@@ -146,6 +146,14 @@ export function useOnboardingTour(
 
 	function scheduleMissingTargetRetry(stepId: string) {
 		if (targetRetryCount >= missingTargetRetryLimit) {
+			// 超过重试上限：inspect 步（介绍性步骤）不自动跳过，
+			// 保持无锚点状态，让气泡停靠底部等用户手动继续。
+			if (step.value.interaction === 'inspect') {
+				targetElement.value = undefined
+				targetRect.value = null
+				clearModalReservation()
+				return
+			}
 			void advance()
 			return
 		}
@@ -271,8 +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()
@@ -280,11 +291,14 @@ 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
 
-		if (step.value.expectedPath && route.path !== step.value.expectedPath) {
+		if (step.value.expectedPath && !route.path.startsWith(step.value.expectedPath)) {
 			waitingForRoute.value = true
 			return
 		}
@@ -301,7 +315,7 @@ export function useOnboardingTour(
 		() => route.path,
 		(path) => {
 			if (!waitingForRoute.value || !step.value.expectedPath) return
-			if (path !== step.value.expectedPath) return
+			if (!path.startsWith(step.value.expectedPath)) return
 			waitingForRoute.value = false
 			void advance()
 		},

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

@@ -0,0 +1,289 @@
+<script lang="ts"></script>
+
+<script setup lang="ts">
+import { KeyboardSensor, PointerSensor, useDraggable } from '@dnd-kit/vue'
+import { CheckIcon, ClipboardCopyIcon, EditIcon, MoreHorizontalIcon } from '@modrinth/assets'
+import {
+	defineMessages,
+	IconButton,
+	useDebugLogger,
+	useFormatDateTime,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+
+import { useImageThumbnail } from '@/composables/use-image-thumbnail'
+import type { InstanceScreenshot } from '@/helpers/instance'
+
+const props = defineProps<{
+	screenshot: InstanceScreenshot
+	selectionKey: string
+	selected: boolean
+	selectionActive: boolean
+	activeDragged: boolean
+	canDrag: boolean
+	showInstanceName: boolean
+	highlighted: boolean
+	copied: boolean
+}>()
+
+const emit = defineEmits<{
+	(e: 'activate', event: MouseEvent | KeyboardEvent): void
+	(e: 'copy' | 'edit' | 'toggle-selection'): void
+	(e: 'more', event: MouseEvent): void
+}>()
+
+const card = ref<HTMLElement>()
+const thumbnail = useImageThumbnail(
+	() => ({
+		instanceId: props.screenshot.instance_id,
+		filePath: `screenshots/${props.screenshot.file_name}`,
+		path: props.screenshot.path,
+	}),
+	512,
+	() => props.screenshot.modified_at,
+)
+const image = ref<HTMLImageElement>()
+const imageReady = ref(false)
+const { formatMessage } = useVIntl()
+const debugImage = useDebugLogger('Screenshots:Card')
+const formatTime = useFormatDateTime({ dateStyle: 'medium', timeStyle: 'short' })
+let loadStartedAt = performance.now()
+let loadGeneration = 0
+const messages = defineMessages({
+	select: { id: 'app.screenshots.select', defaultMessage: 'Select {name}' },
+	deselect: { id: 'app.screenshots.deselect', defaultMessage: 'Deselect {name}' },
+	copy: { id: 'app.screenshots.copy', defaultMessage: 'Copy image' },
+	copied: { id: 'app.screenshots.copied', defaultMessage: 'Copied' },
+	edit: { id: 'app.screenshots.edit', defaultMessage: 'Edit screenshot' },
+	moreActions: { id: 'app.screenshots.more-actions', defaultMessage: 'More actions' },
+})
+
+const sensors = [
+	PointerSensor.configure({
+		preventActivation: () => false,
+	}),
+	KeyboardSensor,
+]
+
+useDraggable({
+	id: computed(() => `screenshot:${props.selectionKey}`),
+	element: card,
+	disabled: computed(() => !props.canDrag),
+	sensors,
+	data: computed(() => ({
+		selectionKey: props.selectionKey,
+		instanceId: props.screenshot.instance_id,
+	})),
+})
+
+function activate(event: MouseEvent | KeyboardEvent) {
+	if (event instanceof KeyboardEvent) {
+		if (event.target !== event.currentTarget || (event.key !== 'Enter' && event.key !== ' ')) {
+			return
+		}
+		event.preventDefault()
+	}
+	emit('activate', event)
+}
+
+async function markImageLoaded() {
+	const loadedImage = image.value
+	const loadedUrl = thumbnail.value
+	const generation = loadGeneration
+	if (!loadedImage) return
+
+	try {
+		await loadedImage.decode()
+	} catch {
+		if (!loadedImage.complete || loadedImage.naturalWidth === 0) return
+	}
+
+	await new Promise<void>((resolve) => {
+		window.requestAnimationFrame(() => window.requestAnimationFrame(() => resolve()))
+	})
+
+	if (
+		generation !== loadGeneration ||
+		image.value !== loadedImage ||
+		thumbnail.value !== loadedUrl
+	) {
+		return
+	}
+
+	const wasReady = imageReady.value
+	imageReady.value = true
+	if (!wasReady) {
+		debugImage('image loaded', {
+			id: props.screenshot.id,
+			fileName: props.screenshot.file_name,
+			url: props.screenshot.url,
+			loadDurationMs: performance.now() - loadStartedAt,
+			naturalWidth: image.value?.naturalWidth,
+			naturalHeight: image.value?.naturalHeight,
+		})
+	}
+}
+
+function markImageFailed(event: Event) {
+	debugImage('image failed', {
+		id: props.screenshot.id,
+		fileName: props.screenshot.file_name,
+		url: props.screenshot.url,
+		loadDurationMs: performance.now() - loadStartedAt,
+		event,
+	})
+}
+
+onMounted(() => {
+	debugImage('mounted', {
+		id: props.screenshot.id,
+		fileName: props.screenshot.file_name,
+		url: props.screenshot.url,
+		complete: image.value?.complete,
+	})
+	if (image.value?.complete && image.value.naturalWidth > 0) markImageLoaded()
+})
+
+onBeforeUnmount(() => {
+	loadGeneration += 1
+	debugImage('unmounted', {
+		id: props.screenshot.id,
+		fileName: props.screenshot.file_name,
+		url: props.screenshot.url,
+		loaded: imageReady.value,
+	})
+})
+
+watch(thumbnail, (url, previousUrl) => {
+	loadGeneration += 1
+	loadStartedAt = performance.now()
+	imageReady.value = false
+	debugImage('source changed', {
+		id: props.screenshot.id,
+		fileName: props.screenshot.file_name,
+		previousUrl,
+		url,
+	})
+})
+</script>
+<template>
+	<article
+		ref="card"
+		role="button"
+		tabindex="0"
+		class="group relative isolate aspect-video min-w-0 cursor-pointer overflow-hidden rounded-xl border border-solid border-surface-5 bg-surface-2 p-0 text-left shadow-sm transition-[filter] hover:brightness-110 focus-visible:outline focus-visible:outline-2 focus-visible:outline-brand"
+		:class="{
+			'!border-brand brightness-110': selected,
+			'!border-brand ring-2 ring-brand animate-pulse': highlighted,
+			'opacity-50': activeDragged,
+			'cursor-grab active:cursor-grabbing': canDrag,
+		}"
+		data-screenshot-card
+		:data-screenshot-id="screenshot.id"
+		:data-selection-key="selectionKey"
+		:aria-label="
+			selectionActive
+				? formatMessage(selected ? messages.deselect : messages.select, {
+						name: screenshot.file_name,
+					})
+				: screenshot.file_name
+		"
+		:aria-pressed="selectionActive ? selected : undefined"
+		@click="activate"
+		@contextmenu.prevent.stop="emit('more', $event)"
+		@keydown="activate"
+	>
+		<button
+			type="button"
+			class="selection-button group/selection absolute right-0.5 top-0 z-[3] flex size-[50px] cursor-pointer items-start justify-center border-0 bg-transparent p-0 pt-4"
+			:aria-label="
+				formatMessage(selected ? messages.deselect : messages.select, {
+					name: screenshot.file_name,
+				})
+			"
+			:aria-pressed="selected"
+			@click.stop="emit('toggle-selection')"
+		>
+			<span
+				class="relative flex size-6 items-center justify-center rounded-full opacity-0 transition-opacity duration-200 ease-out group-hover:opacity-100 group-focus-within:opacity-100 group-hover/selection:brightness-125"
+				:class="
+					selected ? 'border-0 !opacity-100' : 'border-2 border-solid border-primary bg-transparent'
+				"
+			>
+				<span v-if="selected" class="absolute inset-0 rounded-full bg-brand" />
+				<CheckIcon v-if="selected" class="relative size-4 invert [stroke-width:3]" />
+			</span>
+		</button>
+		<img
+			v-if="thumbnail"
+			ref="image"
+			:src="thumbnail"
+			:alt="screenshot.file_name"
+			loading="eager"
+			decoding="async"
+			draggable="false"
+			class="screenshot-card-fade absolute inset-0 z-[1] h-full w-full object-cover"
+			:class="imageReady ? 'opacity-100' : 'opacity-0'"
+			@load="markImageLoaded"
+			@error="markImageFailed"
+		/>
+		<div
+			aria-hidden="true"
+			class="pointer-events-none absolute inset-0 bg-surface-4"
+			:class="{ 'animate-pulse': !imageReady }"
+		/>
+		<div
+			class="absolute inset-x-0 bottom-0 z-[2] flex items-end justify-between gap-2 bg-gradient-to-t from-surface-1 to-transparent p-3 pt-[120px] text-[var(--color-text-primary)] opacity-0 transition-opacity duration-200 group-hover:opacity-100 group-focus-within:opacity-100"
+		>
+			<div class="min-w-0">
+				<div v-tooltip="screenshot.file_name" class="truncate text-sm font-semibold">
+					{{ screenshot.file_name }}
+				</div>
+				<div class="truncate text-xs text-[var(--color-text-tertiary)]">
+					{{ showInstanceName ? screenshot.instance_name : formatTime(screenshot.created_at) }}
+				</div>
+			</div>
+			<div
+				v-if="!selectionActive"
+				class="flex shrink-0 translate-y-1 gap-1 opacity-0 transition group-hover:translate-y-0 group-hover:opacity-100 group-focus-within:translate-y-0 group-focus-within:opacity-100"
+				@click.stop
+			>
+				<IconButton
+					v-tooltip="formatMessage(messages.edit)"
+					:label="formatMessage(messages.edit)"
+					type="quiet"
+					class="bg-surface-2 text-[var(--color-text-primary)] hover:bg-surface-3"
+					@click="emit('edit')"
+				>
+					<EditIcon />
+				</IconButton>
+				<IconButton
+					v-tooltip="formatMessage(copied ? messages.copied : messages.copy)"
+					:label="formatMessage(copied ? messages.copied : messages.copy)"
+					type="quiet"
+					class="bg-surface-2 text-[var(--color-text-primary)] hover:bg-surface-3"
+					@click="emit('copy')"
+				>
+					<CheckIcon v-if="copied" class="text-green" />
+					<ClipboardCopyIcon v-else />
+				</IconButton>
+				<IconButton
+					v-tooltip="formatMessage(messages.moreActions)"
+					:label="formatMessage(messages.moreActions)"
+					type="quiet"
+					class="bg-surface-2 text-[var(--color-text-primary)] hover:bg-surface-3"
+					@click="emit('more', $event)"
+				>
+					<MoreHorizontalIcon />
+				</IconButton>
+			</div>
+		</div>
+	</article>
+</template>
+
+<style scoped>
+.screenshot-card-fade {
+	transition: opacity 350ms ease-in-out;
+}
+</style>

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

@@ -0,0 +1,96 @@
+<script setup lang="ts">
+import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
+
+import ScreenshotDragPreview from './drag-preview.vue'
+import { gatherDuration, type ScreenshotDragGatherItem } from './use-screenshot-drag-gather'
+
+const props = defineProps<{
+	items: ScreenshotDragGatherItem[]
+	target: {
+		x: number
+		y: number
+	}
+}>()
+
+const emit = defineEmits<{
+	complete: []
+}>()
+
+const gathered = ref(false)
+const finishing = ref(false)
+let animationFrame: number | undefined
+let completionTimer: number | undefined
+
+const itemContainerStyles = computed(() =>
+	props.items.map((_, index) => ({
+		left: `${props.target.x}px`,
+		top: `${props.target.y}px`,
+		zIndex: `${index}`,
+	})),
+)
+
+const itemStyles = computed(() =>
+	props.items.map((item, index) => {
+		const originX = item.rect.left - props.target.x
+		const originY = item.rect.top - props.target.y
+
+		return {
+			width: `${item.rect.width}px`,
+			height: `${item.rect.height}px`,
+			transform: gathered.value
+				? `translate3d(${-item.rect.width / 2}px, ${-item.rect.height / 2}px, 0)`
+				: `translate3d(${originX}px, ${originY}px, 0)`,
+			transitionDuration: `${gatherDuration}ms`,
+			transitionDelay: `${Math.min(index, 8) * 10}ms`,
+		}
+	}),
+)
+
+onMounted(() => {
+	animationFrame = requestAnimationFrame(() => {
+		animationFrame = requestAnimationFrame(() => {
+			gathered.value = true
+			completionTimer = window.setTimeout(
+				() => {
+					finishing.value = true
+					emit('complete')
+				},
+				Math.max(gatherDuration - 250, 0),
+			)
+		})
+	})
+})
+
+onBeforeUnmount(() => {
+	if (animationFrame !== undefined) {
+		cancelAnimationFrame(animationFrame)
+	}
+	if (completionTimer !== undefined) {
+		clearTimeout(completionTimer)
+	}
+})
+</script>
+
+<template>
+	<Teleport to="body">
+		<div
+			class="pointer-events-none fixed inset-0 z-[9998] overflow-hidden transition-opacity duration-150 ease-out"
+			:class="finishing ? 'opacity-0' : 'opacity-100'"
+			aria-hidden="true"
+		>
+			<div
+				v-for="(item, index) in items"
+				:key="item.selectionKey"
+				class="fixed"
+				:style="itemContainerStyles[index]"
+			>
+				<div
+					class="origin-center transition-transform ease-[cubic-bezier(0.2,0.8,0.2,1)]"
+					:style="itemStyles[index]"
+				>
+					<ScreenshotDragPreview :screenshot="item.screenshot" />
+				</div>
+			</div>
+		</div>
+	</Teleport>
+</template>

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

@@ -0,0 +1,75 @@
+<script setup lang="ts">
+import { TagItem } from '@modrinth/ui'
+import { onBeforeUnmount, onMounted, ref } from 'vue'
+
+import { useImageThumbnail } from '@/composables/use-image-thumbnail'
+import type { InstanceScreenshot } from '@/helpers/instance'
+
+import { gatherDuration } from './use-screenshot-drag-gather'
+
+const props = withDefaults(
+	defineProps<{
+		screenshot: InstanceScreenshot
+		count?: number
+	}>(),
+	{
+		count: 1,
+	},
+)
+
+const thumbnail = useImageThumbnail(
+	() => ({
+		instanceId: props.screenshot.instance_id,
+		filePath: `screenshots/${props.screenshot.file_name}`,
+		path: props.screenshot.path,
+	}),
+	512,
+	() => props.screenshot.modified_at,
+)
+const showGatheredCount = ref(false)
+let countTimer: number | undefined
+
+onMounted(() => {
+	if (props.count <= 1 || window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
+		showGatheredCount.value = true
+		return
+	}
+
+	countTimer = window.setTimeout(() => {
+		showGatheredCount.value = true
+		countTimer = undefined
+	}, gatherDuration - 150)
+})
+
+onBeforeUnmount(() => {
+	if (countTimer !== undefined) {
+		clearTimeout(countTimer)
+	}
+})
+</script>
+
+<template>
+	<div aria-hidden="true" class="relative w-full select-none">
+		<div
+			v-if="count > 1"
+			class="absolute inset-x-3 -bottom-2 top-2 rounded-xl border border-solid border-surface-5 bg-surface-2 shadow-md motion-safe:transition-opacity motion-safe:duration-200 motion-safe:delay-100 motion-safe:ease-out"
+			:class="showGatheredCount ? 'opacity-60' : 'opacity-0'"
+		/>
+		<div
+			v-if="count > 1"
+			class="absolute inset-x-1.5 -bottom-1 top-1 rounded-xl border border-solid border-surface-4 bg-surface-3 shadow-md motion-safe:transition-opacity motion-safe:duration-150 motion-safe:ease-out"
+			:class="showGatheredCount ? 'opacity-80' : 'opacity-0'"
+		/>
+		<div
+			class="relative aspect-video w-full overflow-hidden rounded-xl border border-solid border-surface-5 bg-surface-2 opacity-90 shadow-lg"
+		>
+			<img v-if="thumbnail" :src="thumbnail" alt="" class="h-full w-full object-cover" />
+			<TagItem
+				v-if="count > 1"
+				class="!absolute right-3 top-3 z-[2] border-surface-5 bg-surface-4 tabular-nums text-[var(--color-text-tertiary)] motion-safe:transition-opacity motion-safe:duration-150 motion-safe:ease-out"
+			>
+				{{ count }}
+			</TagItem>
+		</div>
+	</div>
+</template>

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

@@ -0,0 +1,243 @@
+<script setup lang="ts">
+import { useDroppable } from '@dnd-kit/vue'
+import { defineMessages, useDebugLogger, useVIntl } from '@modrinth/ui'
+import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+
+import type { InstanceScreenshot } from '@/helpers/instance'
+
+import ScreenshotCard from './card.vue'
+import ScreenshotSection from './section.vue'
+
+const props = defineProps<{
+	id: string
+	title: string
+	screenshots: InstanceScreenshot[]
+	renderedScreenshots?: InstanceScreenshot[]
+	virtualGridHeight?: number
+	virtualGridTop?: number
+	selectedKeys: ReadonlySet<string>
+	selectionActive: boolean
+	activeDraggedKeys: ReadonlySet<string>
+	showDropOutline: boolean
+	canDrag: boolean
+	dropInstanceId?: string
+	dropCustomGroup?: boolean
+	dropCustomGroupId?: string
+	showInstanceName: boolean
+	highlightedScreenshotId?: string
+	copiedScreenshotIds: ReadonlySet<string>
+	forceOpen: boolean
+	hideHeader?: boolean
+	editableTitle?: boolean
+	startEditingTitle?: boolean
+	maxTitleLength?: number
+	validateTitle?: (value: string) => boolean
+	onTitleChange?: (value: string) => boolean | void | Promise<boolean | void>
+}>()
+
+const collapsed = defineModel<boolean>('collapsed', { required: true })
+const dropTarget = ref<HTMLElement>()
+const { formatMessage } = useVIntl()
+const debugLayout = useDebugLogger('Screenshots:Group')
+const messages = defineMessages({
+	emptyGroup: {
+		id: 'app.screenshots.group.empty',
+		defaultMessage: 'Drag and drop to add screenshots.',
+	},
+})
+
+const shouldShowGrid = computed(() =>
+	Boolean(props.hideHeader || props.forceOpen || !collapsed.value),
+)
+const visibleScreenshots = ref<InstanceScreenshot[]>(props.renderedScreenshots ?? props.screenshots)
+const renderGrid = ref(shouldShowGrid.value)
+const virtualGridStyle = computed(() =>
+	props.virtualGridHeight === undefined ? undefined : { height: `${props.virtualGridHeight}px` },
+)
+const visibleGridStyle = computed(() =>
+	props.virtualGridTop === undefined
+		? undefined
+		: { transform: `translateY(${props.virtualGridTop}px)` },
+)
+let unmountGridTimeout: ReturnType<typeof setTimeout> | undefined
+let resizeObserver: ResizeObserver | undefined
+
+async function logGeometry(reason: string) {
+	await nextTick()
+	const rect = dropTarget.value?.getBoundingClientRect()
+	debugLayout(reason, {
+		id: props.id,
+		title: props.title,
+		collapsed: collapsed.value,
+		shouldShowGrid: shouldShowGrid.value,
+		renderGrid: renderGrid.value,
+		screenshotCount: props.screenshots.length,
+		renderedCount: visibleScreenshots.value.length,
+		firstScreenshotId: visibleScreenshots.value.at(0)?.id,
+		lastScreenshotId: visibleScreenshots.value.at(-1)?.id,
+		virtualGridHeight: props.virtualGridHeight,
+		virtualGridTop: props.virtualGridTop,
+		actual: rect
+			? { top: rect.top, left: rect.left, width: rect.width, height: rect.height }
+			: undefined,
+	})
+}
+
+watch(
+	() => props.renderedScreenshots ?? props.screenshots,
+	(screenshots) => {
+		if (shouldShowGrid.value) visibleScreenshots.value = screenshots
+		void logGeometry('rendered screenshots changed')
+	},
+)
+
+watch(
+	() => [props.virtualGridHeight, props.virtualGridTop] as const,
+	() => void logGeometry('virtual grid geometry changed'),
+)
+
+watch(
+	shouldShowGrid,
+	(showGrid, previouslyShown) => {
+		if (unmountGridTimeout) clearTimeout(unmountGridTimeout)
+		if (showGrid) {
+			visibleScreenshots.value = props.renderedScreenshots ?? props.screenshots
+			renderGrid.value = true
+			void logGeometry('grid shown')
+			return
+		}
+		if (!previouslyShown) {
+			renderGrid.value = false
+			return
+		}
+		unmountGridTimeout = setTimeout(() => {
+			renderGrid.value = false
+			void logGeometry('grid unmounted after collapse')
+			unmountGridTimeout = undefined
+		}, 300)
+	},
+	{ flush: 'post' },
+)
+
+onMounted(() => {
+	debugLayout('mounted', { id: props.id, title: props.title })
+	void logGeometry('mounted geometry')
+	if (dropTarget.value) {
+		resizeObserver = new ResizeObserver(([entry]) => {
+			const rect = entry?.target.getBoundingClientRect()
+			debugLayout('actual size changed', {
+				id: props.id,
+				title: props.title,
+				width: rect?.width,
+				height: rect?.height,
+				expectedHeight:
+					(props.hideHeader ? 0 : 40) +
+					(shouldShowGrid.value ? 10 + (props.virtualGridHeight ?? 0) : 0) +
+					12,
+			})
+		})
+		resizeObserver.observe(dropTarget.value)
+	}
+})
+
+onBeforeUnmount(() => {
+	debugLayout('unmounted', {
+		id: props.id,
+		title: props.title,
+		renderedCount: visibleScreenshots.value.length,
+	})
+	resizeObserver?.disconnect()
+	if (unmountGridTimeout) clearTimeout(unmountGridTimeout)
+})
+
+const emit = defineEmits<{
+	(e: 'activate', screenshot: InstanceScreenshot, event: MouseEvent | KeyboardEvent): void
+	(e: 'toggle-selection' | 'copy' | 'edit', screenshot: InstanceScreenshot): void
+	(e: 'more', screenshot: InstanceScreenshot, event: MouseEvent): void
+}>()
+
+useDroppable({
+	id: computed(() => `screenshot-group:${props.id}`),
+	element: dropTarget,
+	disabled: computed(() => !props.dropInstanceId && !props.dropCustomGroup),
+	data: computed(() =>
+		props.dropCustomGroup
+			? { groupId: props.id, customGroupId: props.dropCustomGroupId ?? null }
+			: { groupId: props.id, instanceId: props.dropInstanceId },
+	),
+})
+
+function getSelectionKey(screenshot: InstanceScreenshot) {
+	return JSON.stringify([screenshot.instance_id, screenshot.file_name])
+}
+</script>
+
+<template>
+	<div
+		ref="dropTarget"
+		class="group/instance-container relative select-none pb-3 transition-colors"
+	>
+		<Transition
+			enter-active-class="transition-opacity duration-150 ease-out"
+			enter-from-class="!opacity-0"
+			enter-to-class="opacity-100"
+			leave-active-class="transition-opacity duration-150 ease-in"
+			leave-from-class="opacity-100"
+			leave-to-class="!opacity-0"
+		>
+			<div
+				v-if="showDropOutline"
+				class="pointer-events-none absolute -inset-2 inset-y-0 z-20 rounded-xl border-2 border-dashed border-brand bg-brand-highlight opacity-40"
+			/>
+		</Transition>
+		<ScreenshotSection
+			v-model:collapsed="collapsed"
+			:title="title"
+			:count="screenshots.length"
+			:force-open="forceOpen"
+			:hide-header="hideHeader"
+			:editable="editableTitle"
+			:start-editing="startEditingTitle"
+			:max-title-length="maxTitleLength"
+			:validate-title="validateTitle"
+			:on-title-change="onTitleChange"
+		>
+			<template #actions="{ startEditing }">
+				<slot name="actions" :start-editing="startEditing" />
+			</template>
+			<div v-if="renderGrid" class="relative min-h-[45px] w-full" :style="virtualGridStyle">
+				<div
+					class="grid min-h-[45px] w-full grid-cols-1 gap-3 sm:grid-cols-2 2xl:grid-cols-4"
+					:class="{ 'absolute inset-x-0 top-0': virtualGridHeight !== undefined }"
+					:style="visibleGridStyle"
+				>
+					<ScreenshotCard
+						v-for="screenshot in visibleScreenshots"
+						:key="getSelectionKey(screenshot)"
+						:screenshot="screenshot"
+						:selection-key="getSelectionKey(screenshot)"
+						:selected="selectedKeys.has(getSelectionKey(screenshot))"
+						:selection-active="selectionActive"
+						:active-dragged="activeDraggedKeys.has(getSelectionKey(screenshot))"
+						:can-drag="canDrag"
+						:show-instance-name="showInstanceName"
+						:highlighted="highlightedScreenshotId === screenshot.id"
+						:copied="copiedScreenshotIds.has(screenshot.id)"
+						@activate="(event) => emit('activate', screenshot, event)"
+						@toggle-selection="emit('toggle-selection', screenshot)"
+						@copy="emit('copy', screenshot)"
+						@edit="emit('edit', screenshot)"
+						@more="(event) => emit('more', screenshot, event)"
+					/>
+					<p
+						v-if="screenshots.length === 0"
+						key="empty-group"
+						class="col-span-full m-0 pl-0.5 pt-1 text-base font-base text-[var(--color-text-tertiary)] opacity-80"
+					>
+						{{ formatMessage(messages.emptyGroup) }}
+					</p>
+				</div>
+			</div>
+		</ScreenshotSection>
+	</div>
+</template>

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

@@ -0,0 +1,169 @@
+<script setup lang="ts">
+import { DropdownIcon } from '@modrinth/assets'
+import {
+	Accordion,
+	commonMessages,
+	defineMessages,
+	InlineEditableText,
+	TagItem,
+	useDebugLogger,
+	useVIntl,
+} from '@modrinth/ui'
+import { nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
+
+const props = withDefaults(
+	defineProps<{
+		title: string
+		count: number
+		collapsed?: boolean
+		forceOpen?: boolean
+		hideHeader?: boolean
+		editable?: boolean
+		startEditing?: boolean
+		maxTitleLength?: number
+		validateTitle?: (value: string) => boolean
+		onTitleChange?: (value: string) => boolean | void | Promise<boolean | void>
+	}>(),
+	{
+		collapsed: false,
+		forceOpen: false,
+		hideHeader: false,
+		editable: false,
+		startEditing: false,
+	},
+)
+
+const emit = defineEmits<{
+	(e: 'update:collapsed', collapsed: boolean): void
+}>()
+
+const { formatMessage } = useVIntl()
+const debugLayout = useDebugLogger('Screenshots:Section')
+const accordion = ref<InstanceType<typeof Accordion>>()
+const titleInput = ref<InstanceType<typeof InlineEditableText>>()
+const titleModel = ref(props.title)
+const messages = defineMessages({
+	collapse: { id: 'app.screenshots.group.collapse', defaultMessage: 'Collapse group' },
+	expand: { id: 'app.screenshots.group.expand', defaultMessage: 'Expand group' },
+})
+
+function toggle() {
+	debugLayout('toggle requested', {
+		title: props.title,
+		count: props.count,
+		isOpen: accordion.value?.isOpen,
+	})
+	if (accordion.value?.isOpen) {
+		accordion.value.close()
+	} else {
+		accordion.value?.open()
+	}
+}
+
+function handleOpen() {
+	debugLayout('opened', { title: props.title, count: props.count })
+	emit('update:collapsed', false)
+}
+
+function handleClose() {
+	debugLayout('closed', { title: props.title, count: props.count })
+	emit('update:collapsed', true)
+}
+
+onMounted(() => {
+	debugLayout('mounted', {
+		title: props.title,
+		count: props.count,
+		collapsed: props.collapsed,
+		hideHeader: props.hideHeader,
+		forceOpen: props.forceOpen,
+	})
+})
+
+onBeforeUnmount(() => {
+	debugLayout('unmounted', { title: props.title, count: props.count })
+})
+
+async function startTitleEditing() {
+	if (!props.editable) return
+	await titleInput.value?.startEditing()
+}
+
+watch(
+	() => props.title,
+	(title) => {
+		titleModel.value = title
+	},
+)
+
+watch(
+	() => props.startEditing,
+	async (shouldStartEditing) => {
+		if (!shouldStartEditing) return
+		await nextTick()
+		await startTitleEditing()
+	},
+	{ immediate: true, flush: 'post' },
+)
+</script>
+
+<template>
+	<section class="flex w-full flex-col">
+		<div
+			v-if="!hideHeader"
+			class="group/header flex h-10 w-full items-center gap-2 border-0 border-b border-solid border-b-surface-5"
+		>
+			<div class="group/open-target flex min-w-0 cursor-pointer items-center gap-2" @click="toggle">
+				<button
+					type="button"
+					class="flex shrink-0 cursor-pointer items-center border-0 bg-transparent p-0"
+					:aria-expanded="accordion?.isOpen"
+					:aria-label="formatMessage(accordion?.isOpen ? messages.collapse : messages.expand)"
+					@click.stop="toggle"
+				>
+					<DropdownIcon
+						class="size-5 shrink-0 text-[var(--color-text-tertiary)] transition-all duration-300 group-hover/open-target:text-[var(--color-text-default)]"
+						:class="{ 'rotate-180': accordion?.isOpen }"
+					/>
+				</button>
+				<InlineEditableText
+					v-if="editable"
+					ref="titleInput"
+					v-model="titleModel"
+					activation-mode="manual"
+					class="!h-10 select-none text-base font-semibold text-[var(--color-text-default)] group-hover/open-target:text-[var(--color-text-primary)]"
+					:edit-label="formatMessage(commonMessages.renameButton)"
+					max-width="24rem"
+					icon-text-class="select-none"
+					:max-length="maxTitleLength"
+					:validate="validateTitle"
+					:on-change="onTitleChange"
+				/>
+				<span
+					v-else
+					class="select-none truncate text-base font-semibold text-[var(--color-text-default)] group-hover/open-target:text-[var(--color-text-primary)]"
+				>
+					{{ title }}
+				</span>
+				<TagItem v-if="count" class="shrink-0 border-surface-3 bg-surface-2">
+					{{ count }}
+				</TagItem>
+			</div>
+			<div class="min-w-0 flex-1" />
+			<slot name="actions" :start-editing="startTitleEditing" />
+		</div>
+		<Accordion
+			ref="accordion"
+			:open-by-default="hideHeader || !props.collapsed"
+			:force-open="forceOpen"
+			overflow-visible
+			class="w-full"
+			@on-open="handleOpen"
+			@on-close="handleClose"
+		>
+			<div class="mt-2.5">
+				<slot />
+			</div>
+		</Accordion>
+	</section>
+</template>

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

@@ -0,0 +1,87 @@
+<script setup lang="ts">
+import { ArrowUpDownIcon, GridIcon, PlusIcon, SearchIcon } from '@modrinth/assets'
+import {
+	Button,
+	Combobox,
+	type ComboboxOption,
+	defineMessages,
+	StyledInput,
+	useVIntl,
+} from '@modrinth/ui'
+
+const search = defineModel<string>('search', { required: true })
+const sort = defineModel<string>('sort', { required: true })
+const group = defineModel<string>('group', { required: true })
+
+defineProps<{
+	sortOptions: ComboboxOption<string>[]
+	groupOptions: ComboboxOption<string>[]
+}>()
+
+const emit = defineEmits<{
+	(e: 'new-group'): void
+}>()
+
+const { formatMessage } = useVIntl()
+const messages = defineMessages({
+	search: { id: 'app.screenshots.search', defaultMessage: 'Search' },
+	newGroup: { id: 'app.screenshots.group.new', defaultMessage: 'New group' },
+	sortBy: { id: 'app.screenshots.sort-by', defaultMessage: 'Sort by' },
+	groupBy: { id: 'app.screenshots.group-by', defaultMessage: 'Group by' },
+})
+</script>
+
+<template>
+	<div class="flex flex-col gap-2">
+		<div class="flex flex-wrap gap-2">
+			<StyledInput
+				v-model="search"
+				:icon="SearchIcon"
+				type="text"
+				:placeholder="formatMessage(messages.search)"
+				clearable
+				wrapper-class="min-w-[16rem] flex-1"
+			/>
+			<Button @click="emit('new-group')">
+				<PlusIcon />
+				{{ formatMessage(messages.newGroup) }}
+			</Button>
+		</div>
+		<div class="flex flex-wrap items-center gap-2">
+			<Combobox
+				v-model="sort"
+				class="w-max"
+				:options="sortOptions"
+				:show-icon-in-selected="false"
+				dropdown-min-width="160px"
+			>
+				<template #prefix>
+					<ArrowUpDownIcon
+						class="size-5 text-[var(--color-text-default)]"
+						:aria-label="formatMessage(messages.sortBy)"
+					/>
+				</template>
+				<template #selected="{ label }">
+					<span>{{ label }}</span>
+				</template>
+			</Combobox>
+			<Combobox
+				v-model="group"
+				class="w-max"
+				:options="groupOptions"
+				:show-icon-in-selected="false"
+				dropdown-min-width="160px"
+			>
+				<template #prefix>
+					<GridIcon
+						class="size-5 text-[var(--color-text-default)]"
+						:aria-label="formatMessage(messages.groupBy)"
+					/>
+				</template>
+				<template #selected="{ label }">
+					<span>{{ label }}</span>
+				</template>
+			</Combobox>
+		</div>
+	</div>
+</template>

apps/app-frontend/src/components/ui/screenshots-page/use-screenshot-drag-gather.ts

@@ -0,0 +1,130 @@
+import { onBeforeUnmount, type Ref, ref } from 'vue'
+
+import type { InstanceScreenshot } from '@/helpers/instance'
+
+type Point = {
+	x: number
+	y: number
+}
+
+export type ActiveScreenshotDrag = {
+	primarySelectionKey: string
+	selectionKeys: string[]
+}
+
+export const gatherDuration = 500
+
+export type ScreenshotDragGatherItem = {
+	screenshot: InstanceScreenshot
+	selectionKey: string
+	rect: {
+		left: number
+		top: number
+		width: number
+		height: number
+	}
+}
+
+function getSelectionKey(screenshot: InstanceScreenshot) {
+	return JSON.stringify([screenshot.instance_id, screenshot.file_name])
+}
+
+export function useScreenshotDragGather(screenshots: Ref<InstanceScreenshot[]>) {
+	const items = ref<ScreenshotDragGatherItem[]>([])
+	const target = ref<Point>({ x: 0, y: 0 })
+	const targetOffset = ref<Point>({ x: 0, y: 0 })
+	const isGathering = ref(false)
+	let cleanupTimer: number | undefined
+
+	const clearCleanupTimer = () => {
+		if (cleanupTimer !== undefined) {
+			clearTimeout(cleanupTimer)
+			cleanupTimer = undefined
+		}
+	}
+
+	const clear = () => {
+		clearCleanupTimer()
+		items.value = []
+		targetOffset.value = { x: 0, y: 0 }
+		isGathering.value = false
+	}
+
+	const updateTarget = (pointer: Point) => {
+		target.value = {
+			x: pointer.x + targetOffset.value.x,
+			y: pointer.y + targetOffset.value.y,
+		}
+	}
+
+	const start = (drag: ActiveScreenshotDrag | null, pointer: Point) => {
+		clear()
+
+		const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches
+		if (!drag || drag.selectionKeys.length < 2 || reduceMotion) return
+
+		const screenshotCards = Array.from(
+			document.querySelectorAll<HTMLElement>('[data-screenshot-card]'),
+		)
+		const sourceCard = screenshotCards.find(
+			(card) => card.dataset.selectionKey === drag.primarySelectionKey,
+		)
+
+		if (sourceCard) {
+			const sourceRect = sourceCard.getBoundingClientRect()
+			targetOffset.value = {
+				x: sourceRect.left + sourceRect.width / 2 - pointer.x,
+				y: sourceRect.top + sourceRect.height / 2 - pointer.y,
+			}
+		}
+
+		const screenshotsByKey = new Map(
+			screenshots.value.map((screenshot) => [getSelectionKey(screenshot), screenshot]),
+		)
+		items.value = drag.selectionKeys.flatMap((selectionKey) => {
+			const screenshot = screenshotsByKey.get(selectionKey)
+			const card = screenshotCards.find(
+				(candidate) =>
+					candidate.dataset.selectionKey === selectionKey && candidate.getClientRects().length > 0,
+			)
+			if (!screenshot || !card) return []
+
+			const rect = card.getBoundingClientRect()
+			return [
+				{
+					screenshot,
+					selectionKey,
+					rect: {
+						left: rect.left,
+						top: rect.top,
+						width: rect.width,
+						height: rect.height,
+					},
+				},
+			]
+		})
+		updateTarget(pointer)
+		isGathering.value = items.value.length > 0
+	}
+
+	const finish = () => {
+		isGathering.value = false
+		clearCleanupTimer()
+		cleanupTimer = window.setTimeout(() => {
+			items.value = []
+			cleanupTimer = undefined
+		}, 400)
+	}
+
+	onBeforeUnmount(clearCleanupTimer)
+
+	return {
+		items,
+		target,
+		isGathering,
+		start,
+		updateTarget,
+		clear,
+		finish,
+	}
+}

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

@@ -22,10 +22,11 @@ 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'
+import { setUiScale, uiScale } from '@/helpers/ui-scale'
 import { useTheming } from '@/store/state'
 import {
 	type AccentColor,
@@ -40,6 +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'
 
@@ -209,6 +223,15 @@ const messages = defineMessages({
 		defaultMessage:
 			'Enables advanced rendering such as blur effects that may cause performance issues without hardware-accelerated rendering.',
 	},
+	uiScaleTitle: {
+		id: 'app.appearance-settings.ui-scale.title',
+		defaultMessage: 'Launcher scale',
+	},
+	uiScaleDescription: {
+		id: 'app.appearance-settings.ui-scale.description',
+		defaultMessage:
+			'Scale the whole launcher interface. A smaller scale fits more content, which helps when embedded pages are cut off.',
+	},
 	pageTransitionsTitle: {
 		id: 'app.appearance-settings.page-transitions.title',
 		defaultMessage: 'Page transition animations',
@@ -353,6 +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())
@@ -363,6 +443,84 @@ 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)
+	settings.value.ui_scale = clamped
+}
+
 const accentColorOptions: Array<{
 	value: AccentColor
 	color: string
@@ -473,6 +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,
@@ -483,6 +643,8 @@ watch(
 		transparentBlur,
 		sidebarInstanceCount,
 		closeBehavior,
+		uiFont,
+		monoFont,
 	]) => {
 		themeStore.customBackgroundPath = path
 		themeStore.customBackgroundBlur = blur
@@ -493,10 +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 () => {
@@ -1020,6 +1191,43 @@ watch(
 					/>
 				</template>
 			</SettingsRow>
+			<SettingsRow stacked>
+				<template #label>
+					<span id="settings-target-appearance-ui-scale" tabindex="-1">
+						{{ formatMessage(messages.uiScaleTitle) }}
+					</span>
+				</template>
+				<template #description>{{ formatMessage(messages.uiScaleDescription) }}</template>
+				<template #control>
+					<div class="flex w-full flex-col gap-3">
+						<div class="flex flex-wrap gap-2">
+							<button
+								v-for="preset in [100, 110, 125, 150]"
+								:key="preset"
+								type="button"
+								class="min-w-16 rounded-lg border border-solid px-3 py-1.5 text-sm font-semibold transition-colors"
+								:class="
+									uiScale === preset
+										? 'border-brand bg-brand-highlight text-brand'
+										: 'border-surface-4 bg-surface-3 text-secondary hover:border-surface-5 hover:text-contrast'
+								"
+								@click="updateUiScale(preset)"
+							>
+								{{ preset }}%
+							</button>
+						</div>
+						<Slider
+							id="ui-scale"
+							:model-value="uiScale"
+							:min="50"
+							:max="200"
+							:step="5"
+							unit="%"
+							@update:model-value="(value) => updateUiScale(Number(value))"
+						/>
+					</div>
+				</template>
+			</SettingsRow>
 			<SettingsRow>
 				<template #label>
 					<span id="settings-target-appearance-page-transitions" tabindex="-1">
@@ -1095,6 +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

@@ -7,7 +7,7 @@ import {
 	Toggle,
 	useVIntl,
 } from '@modrinth/ui'
-import { inject, watch } from 'vue'
+import { inject, ref, watch } from 'vue'
 
 import { get as getSettings, set as setSettings } from '@/helpers/settings.ts'
 import { isDev } from '@/helpers/utils'
@@ -54,6 +54,25 @@ const messages = defineMessages({
 	},
 })
 
+const featureFlagLabels: Record<FeatureFlag, string> = {
+	project_background: '项目背景',
+	page_path: '页面路径',
+	worlds_tab: '世界标签页',
+	worlds_in_home: '主页显示世界',
+	server_project_qa: '服务器项目问答',
+	show_version_environment_column: '显示版本环境列',
+	server_ram_as_bytes_always_on: '服务器内存始终按字节显示',
+	always_show_app_controls: '始终显示窗口控件',
+	skip_non_essential_warnings: '跳过非必要警告',
+	skip_unknown_pack_warning: '跳过未知整合包警告',
+	i18n_debug: '国际化调试',
+	show_instance_play_time: '显示实例游玩时间',
+	page_transitions: '页面切换动画',
+	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',
+}
+
 const settings = ref(await getSettings())
 const options = ref<FeatureFlag[]>(Object.keys(DEFAULT_FEATURE_FLAGS))
 
@@ -85,7 +104,7 @@ watch(
 <template>
 	<SettingsSection>
 		<SettingsRow v-for="option in options" :key="option">
-			<template #label>{{ option.replaceAll('_', ' ') }}</template>
+			<template #label>{{ featureFlagLabels[option] ?? option }}</template>
 			<template #control>
 				<div class="flex items-center gap-2">
 					<Button
@@ -124,4 +143,4 @@ watch(
 			</Button>
 		</div>
 	</SettingsSection>
-</template>
+</template>

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/UpdateSettings.vue

@@ -12,13 +12,13 @@ import {
 import { getVersion } from '@tauri-apps/api/app'
 import { invoke } from '@tauri-apps/api/core'
 import { fetch as tauriFetch } from '@tauri-apps/plugin-http'
-import { inject, nextTick, ref, watch } from 'vue'
+import { nextTick, ref, watch } from 'vue'
 
 import UpdateAnnouncementHistory from '@/components/ui/announcement/UpdateAnnouncementHistory.vue'
 import {
 	betaDatabaseExists,
-	copyReleaseDatabaseToBeta,
 	copyDatabaseBetweenChannels,
+	copyReleaseDatabaseToBeta,
 	getCurrentAppDatabasePath,
 	getUpdateChannel,
 	getUpdatePreferences,
@@ -446,11 +446,14 @@ async function confirmDatabaseOperation() {
 			}),
 		})
 	} catch (error) {
+		const detail = error instanceof Error ? error.message : String(error)
 		handleError(
 			new Error(
-				targetChannel === activeChannel
+				`${
-					? formatMessage(messages.databaseOperationActiveTarget)
+					targetChannel === activeChannel
-					: formatMessage(messages.databaseOperationFailed),
+						? formatMessage(messages.databaseOperationActiveTarget)
+						: formatMessage(messages.databaseOperationFailed)
+				}: ${detail}`,
 			),
 		)
 	} finally {
@@ -468,7 +471,7 @@ function cancelDatabaseOperation() {
 	<div class="flex flex-col gap-6">
 		<SettingsSection :title="formatMessage(messages.title)">
 			<div class="update-channel-panel">
-				<p id="settings-target-updates-channel" class="m-0 text-sm leading-[1.45] text-secondary">
+				<p id="settings-target-updates-source" class="m-0 text-sm leading-[1.45] text-secondary">
 					{{ formatMessage(messages.description) }}
 				</p>
 				<div

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/components/ui/settings/settings-category-definitions.ts

@@ -1,4 +1,4 @@
-import { defineMessage, type MessageDescriptor } from '@modrinth/ui'
+import type { MessageDescriptor } from '@modrinth/ui'
 
 export type SettingsCategoryId =
 	| 'interface'
@@ -28,100 +28,100 @@ export interface SettingsCategoryDefinition {
 export const settingsCategoryDefinitions: SettingsCategoryDefinition[] = [
 	{
 		id: 'interface',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.interface',
 			defaultMessage: 'Interface & appearance',
-		}),
+		},
 		group: 'launcher',
 		onboardingId: 'settings-tab-interface',
 	},
 	{
 		id: 'home-navigation',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.home-navigation',
 			defaultMessage: 'Home & navigation',
-		}),
+		},
 		group: 'launcher',
 		onboardingId: 'settings-tab-home-navigation',
 	},
 	{
 		id: 'language-translation',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.language-translation',
 			defaultMessage: 'Language & translation',
-		}),
+		},
 		group: 'launcher',
 		onboardingId: 'settings-tab-language-translation',
 	},
 	{
 		id: 'ai',
-		name: defineMessage({ id: 'app.settings.tabs.ai', defaultMessage: 'AI' }),
+		name: { id: 'app.settings.tabs.ai', defaultMessage: 'AI' },
 		group: 'launcher',
 		flushContent: true,
 		onboardingId: 'settings-tab-ai',
 	},
 	{
 		id: 'java-performance',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.java-performance',
 			defaultMessage: 'Java & performance',
-		}),
+		},
 		group: 'game',
 		onboardingId: 'settings-tab-java-performance',
 	},
 	{
 		id: 'launch-defaults',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.launch-defaults',
 			defaultMessage: 'Launch & instance defaults',
-		}),
+		},
 		group: 'game',
 		onboardingId: 'settings-tab-launch-defaults',
 	},
 	{
 		id: 'content-downloads',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.content-downloads',
 			defaultMessage: 'Content & downloads',
-		}),
+		},
 		group: 'game',
 		onboardingId: 'settings-tab-content-downloads',
 	},
 	{
 		id: 'network-multiplayer',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.network-multiplayer',
 			defaultMessage: 'Network & multiplayer',
-		}),
+		},
 		group: 'game',
 		onboardingId: 'settings-tab-network-multiplayer',
 	},
 	{
 		id: 'storage-backups',
-		name: defineMessage({
+		name: {
 			id: 'app.settings.tabs.storage-backups',
 			defaultMessage: 'Storage & backups',
-		}),
+		},
 		group: 'data-privacy',
 		onboardingId: 'settings-tab-storage-backups',
 	},
 	{
 		id: 'updates',
-		name: defineMessage({ id: 'app.settings.tabs.updates', defaultMessage: 'Updates' }),
+		name: { id: 'app.settings.tabs.updates', defaultMessage: 'Updates' },
 		group: 'support',
 		onboardingId: 'settings-tab-updates',
 	},
 	{
 		id: 'about',
-		name: defineMessage({ id: 'app.settings.tabs.about', defaultMessage: 'About' }),
+		name: { id: 'app.settings.tabs.about', defaultMessage: 'About' },
 		group: 'support',
 	},
 	{
 		id: 'feature-flags',
-		name: defineMessage({
+		name: {
 			id: 'settings.feature-flags.title',
 			defaultMessage: 'Feature flags',
-		}),
+		},
 		group: 'developer',
 		developerOnly: true,
 	},

apps/app-frontend/src/components/ui/settings/settings-registry.ts

@@ -15,7 +15,8 @@ import {
 	UsersIcon,
 } from '@modrinth/assets'
 import { commonMessages, defineMessages, type MessageDescriptor } from '@modrinth/ui'
-import { defineAsyncComponent, type Component } from 'vue'
+import { type Component, defineAsyncComponent } from 'vue'
+
 import {
 	getVisibleSettingsCategoryDefinitions,
 	type SettingsCategoryDefinition,

apps/app-frontend/src/components/ui/world/InstanceItem.vue

@@ -29,8 +29,8 @@ import { useMinecraftLaunchError } from '@/composables/useMinecraftLaunchError'
 import { get_project } from '@/helpers/cache'
 import { process_listener } from '@/helpers/events'
 import { kill, run } from '@/helpers/instance'
-import { get_by_instance_id } from '@/helpers/process'
 import { isInstanceLaunching } from '@/helpers/instance-launch-state'
+import { get_by_instance_id } from '@/helpers/process'
 import type { GameInstance } from '@/helpers/types'
 import { showInstanceInFolder } from '@/helpers/utils'
 import { handleSevereError } from '@/store/error'

apps/app-frontend/src/composables/latest-log-reader.test.ts

@@ -1,120 +0,0 @@
-import assert from 'node:assert/strict'
-import test from 'node:test'
-
-import { createLatestLogReader } from './latest-log-reader.ts'
-
-test('follows file-only output after startup, re-entry, clear and file rotation', async () => {
-	let file = ''
-	let displayed = 'stdout startup'
-	const reader = createLatestLogReader(
-		async (cursor) => ({
-			cursor: file.length,
-			output: file.slice(cursor > file.length ? 0 : cursor),
-			new_file: cursor > file.length,
-		}),
-		(output, replace) => {
-			displayed = (replace ? '' : displayed) + output
-		},
-	)
-	await reader.refresh()
-	assert.equal(reader.active, false)
-	file = 'Startup complete\n'
-	await reader.refresh()
-	assert.equal(reader.active, true)
-	assert.equal(displayed, file) // Replaces stdout, not appended a second time.
-	file += 'Joined world\nDisconnected\n'
-	await reader.refresh()
-	await reader.refresh() // Re-entering the view must not replay history.
-	assert.equal(displayed, file)
-	reader.clear()
-	displayed = ''
-	file += 'After clear\n'
-	await reader.refresh()
-	assert.equal(displayed, 'After clear\n')
-	file = 'Rotated\n'
-	await reader.refresh()
-	assert.equal(displayed, file)
-	file = ''
-	await reader.refresh()
-	assert.equal(displayed, '')
-	assert.equal(reader.active, false)
-	file = 'File recreated\n'
-	await reader.refresh()
-	assert.equal(displayed, file)
-	reader.reset()
-	assert.equal(reader.active, false)
-	file = 'New session with a longer file\n'
-	await reader.refresh()
-	assert.equal(displayed, file)
-})
-
-test('serializes reads, ignores pre-restart responses, consumes pre-clear responses', async () => {
-	const resolvers: ((value: { cursor: number; output: string; new_file: boolean }) => void)[] = []
-	const cursors: number[] = []
-	const output: string[] = []
-	const reader = createLatestLogReader(
-		(cursor) => {
-			cursors.push(cursor)
-			return new Promise((resolve) => resolvers.push(resolve))
-		},
-		(text) => output.push(text),
-	)
-	const old = reader.refresh()
-	const concurrent = reader.refresh()
-	assert.deepEqual(cursors, [0])
-	reader.reset()
-	const fresh = reader.refresh()
-	resolvers[0]({ cursor: 100, output: 'old session', new_file: false })
-	await Promise.all([old, concurrent])
-	assert.deepEqual(output, [])
-	reader.clear()
-	resolvers[1]({ cursor: 20, output: 'before clear', new_file: false })
-	await fresh
-	assert.deepEqual(output, [])
-	const next = reader.refresh()
-	assert.deepEqual(cursors, [0, 0, 20])
-	resolvers[2]({ cursor: 40, output: 'after clear\n', new_file: false })
-	await next
-	assert.deepEqual(output, ['after clear\n'])
-})
-
-test('a temporary read failure keeps the cursor and retries without duplicating output', async () => {
-	let failed = true
-	const output: string[] = []
-	const reader = createLatestLogReader(
-		async (cursor) => {
-			assert.equal(cursor, 0)
-			if (failed) throw new Error('file temporarily unavailable')
-			return { cursor: 6, output: 'ready\n', new_file: false }
-		},
-		(text) => output.push(text),
-	)
-	await assert.rejects(reader.refresh())
-	assert.equal(reader.active, false)
-	failed = false
-	await reader.refresh()
-	assert.deepEqual(output, ['ready\n'])
-})
-
-test('joins split lines and flushes the final unterminated line on exit', async () => {
-	let chunk = 'Startup\n[Render thread/INFO] Join'
-	let cursor = 0
-	let displayed = ''
-	const reader = createLatestLogReader(
-		async () => ({
-			cursor: (cursor += chunk.length),
-			output: chunk,
-			new_file: false,
-		}),
-		(text, replace) => {
-			displayed = (replace ? '' : displayed) + text
-		},
-	)
-	await reader.refresh()
-	assert.equal(displayed, 'Startup\n')
-	chunk = 'ed world\nLast line'
-	await reader.refresh()
-	assert.equal(displayed, 'Startup\n[Render thread/INFO] Joined world\n')
-	reader.flush()
-	assert.equal(displayed, 'Startup\n[Render thread/INFO] Joined world\nLast line')
-})

apps/app-frontend/src/composables/latest-log-reader.ts

@@ -1,88 +0,0 @@
-interface LogCursor {
-	cursor: number
-	output: string
-	new_file: boolean
-}
-
-/** One authoritative stream: use process events until latest.log becomes available. */
-export function createLatestLogReader(
-	read: (cursor: number) => Promise<LogCursor>,
-	append: (output: string, replace: boolean) => void,
-) {
-	let cursor = 0
-	let active = false
-	let session = 0
-	let cleared = 0
-	let partialLine = ''
-	let replaceOnAppend = false
-	let pending: Promise<void> | null = null
-
-	function refresh(): Promise<void> {
-		if (pending) return pending
-		const requestSession = session
-		const requestClear = cleared
-		const request = (async () => {
-			const result = await read(cursor)
-			if (requestSession !== session) return
-			const rotated = result.new_file || result.cursor < cursor
-			const replace = !active || rotated
-			cursor = result.cursor
-			if (result.cursor === 0 && !result.output) {
-				if (rotated) {
-					active = false
-					partialLine = ''
-					replaceOnAppend = false
-					if (requestClear === cleared) append('', true)
-				}
-				return
-			}
-			active = true
-			// Clearing during a read consumes its bytes without restoring cleared text.
-			if (requestClear === cleared && (result.output || result.new_file)) {
-				if (replace) {
-					partialLine = ''
-					replaceOnAppend = true
-				}
-				partialLine += result.output
-				// File writes can end mid-line. Do not turn the next chunk into a
-				// separate log entry; bound unterminated output just like the console.
-				const end =
-					partialLine.length > 64 * 1024 ? partialLine.length : partialLine.lastIndexOf('\n') + 1
-				if (end > 0) {
-					append(partialLine.slice(0, end), replaceOnAppend)
-					partialLine = partialLine.slice(end)
-					replaceOnAppend = false
-				}
-			}
-		})()
-		pending = request
-		return request.finally(() => {
-			if (pending === request) pending = null
-		})
-	}
-
-	return {
-		refresh,
-		get active() {
-			return active
-		},
-		clear() {
-			cleared++
-			partialLine = ''
-			replaceOnAppend = false
-		},
-		flush() {
-			if (partialLine) append(partialLine, replaceOnAppend)
-			partialLine = ''
-			replaceOnAppend = false
-		},
-		reset() {
-			session++
-			cursor = 0
-			active = false
-			partialLine = ''
-			replaceOnAppend = false
-			pending = null
-		},
-	}
-}

apps/app-frontend/src/composables/live-log-reconciler.test.ts

@@ -0,0 +1,70 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import {
+	createLiveLogReconciler,
+	type LiveLogSnapshot,
+} from './live-log-reconciler.ts'
+
+test('merges the authoritative snapshot with queued events without gaps or duplicates', async () => {
+	let resolveSnapshot!: (snapshot: LiveLogSnapshot) => void
+	const displayed: number[] = []
+	const reconciler = createLiveLogReconciler(
+		() =>
+			new Promise((resolve) => {
+				resolveSnapshot = resolve
+			}),
+		(snapshot) => {
+			displayed.splice(
+				0,
+				displayed.length,
+				...snapshot.lines.map((line) => line.sequence),
+			)
+		},
+		(event) => displayed.push(event.last_sequence),
+	)
+
+	const syncing = reconciler.sync()
+	reconciler.accept({ first_sequence: 3, last_sequence: 3 })
+	resolveSnapshot({
+		lines: [
+			{ sequence: 1, message: 'one' },
+			{ sequence: 2, message: 'two' },
+		],
+		last_sequence: 2,
+	})
+	await syncing
+	assert.deepEqual(displayed, [1, 2, 3])
+
+	await reconciler.accept({ first_sequence: 3, last_sequence: 3 })
+	assert.deepEqual(displayed, [1, 2, 3])
+})
+
+test('resynchronizes when an event sequence reveals a missed batch', async () => {
+	const displayed: number[] = []
+	let loads = 0
+	const reconciler = createLiveLogReconciler(
+		async () => {
+			loads++
+			return {
+				lines: [1, 2, 3, 4].map((sequence) => ({
+					sequence,
+					message: String(sequence),
+				})),
+				last_sequence: 4,
+			}
+		},
+		(snapshot) => {
+			displayed.splice(
+				0,
+				displayed.length,
+				...snapshot.lines.map((line) => line.sequence),
+			)
+		},
+		(event) => displayed.push(event.last_sequence),
+	)
+
+	await reconciler.accept({ first_sequence: 4, last_sequence: 4 })
+	assert.equal(loads, 1)
+	assert.deepEqual(displayed, [1, 2, 3, 4])
+})

apps/app-frontend/src/composables/live-log-reconciler.ts

@@ -0,0 +1,81 @@
+export interface LiveLogSnapshot {
+	lines: Array<{ sequence: number; message: string }>
+	last_sequence: number
+}
+
+export interface SequencedLogEvent {
+	first_sequence: number
+	last_sequence: number
+}
+
+export function createLiveLogReconciler<T extends SequencedLogEvent>(
+	loadSnapshot: () => Promise<LiveLogSnapshot>,
+	replace: (snapshot: LiveLogSnapshot) => void,
+	append: (event: T) => void,
+) {
+	let lastSequence = 0
+	let queued: T[] = []
+	let syncing: Promise<void> | null = null
+	let disposed = false
+
+	function drainQueued(): boolean {
+		const events = queued
+		queued = []
+		for (let index = 0; index < events.length; index++) {
+			const event = events[index]!
+			if (event.last_sequence <= lastSequence) continue
+			if (event.first_sequence > lastSequence + 1) {
+				queued.push(...events.slice(index))
+				return false
+			}
+			append(event)
+			lastSequence = event.last_sequence
+		}
+		return true
+	}
+
+	function sync(): Promise<void> {
+		if (syncing) return syncing
+		const request = (async () => {
+			do {
+				const snapshot = await loadSnapshot()
+				if (disposed) return
+				replace(snapshot)
+				lastSequence = snapshot.last_sequence
+			} while (!drainQueued())
+		})()
+		const completion = request.finally(() => {
+			if (syncing === completion) syncing = null
+		})
+		syncing = completion
+		return completion
+	}
+
+	function resync(): Promise<void> {
+		return syncing ? syncing.then(sync) : sync()
+	}
+
+	function accept(event: T): Promise<void> | undefined {
+		if (disposed || event.last_sequence <= lastSequence) return
+		if (syncing) {
+			queued.push(event)
+			return syncing
+		}
+		if (event.first_sequence > lastSequence + 1) {
+			queued.push(event)
+			return sync()
+		}
+		append(event)
+		lastSequence = event.last_sequence
+	}
+
+	return {
+		accept,
+		resync,
+		sync,
+		dispose() {
+			disposed = true
+			queued = []
+		},
+	}
+}

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

@@ -1,21 +1,20 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
-import { useHostedSync } from './useHostedSync.ts'
+
-import { useHostedCreation, forgetHostedCreation } from './useHostedCreation.ts'
 import {
 	clearHostedSession,
+	HOSTED_ACCOUNT_REQUIRED_MESSAGE,
 	hostedCreate,
 	hostedDefault,
 	hostedSync,
 	onHostedPackAttemptStarted,
 	setInstanceMode,
 } from '../helpers/hosted-packs.ts'
-
 import {
 	openSkinSiteLogin,
 	receiveSkinSiteMessage,
-	requestSkinSiteLuck,
 	requestSkinSiteDownloadToken,
+	requestSkinSiteLuck,
 	requestSkinSitePlayers,
 	requestSkinSiteSkinUpdate,
 	resetSkinSiteSession,
@@ -27,6 +26,8 @@ import {
 	skinSiteStatus,
 	skinSiteUser,
 } from './skin-site-session.ts'
+import { forgetHostedCreation, useHostedCreation } from './useHostedCreation.ts'
+import { useHostedSync } from './useHostedSync.ts'
 
 test('reconnecting the same skin site frame waits for verification instead of reporting signed out', () => {
 	const frame = { postMessage() {} } as unknown as Window
@@ -46,6 +47,10 @@ test('hosted installation sends the JWT to native commands while Local needs no
 	let createdId = 'instance'
 	let instanceExists = false
 	let tokenRequests = 0
+	let accounts: Array<{
+		account_type: string
+		yggdrasil?: { api_root: string }
+	}> = [{ account_type: 'microsoft' }]
 	const frame = {
 		postMessage(data: { type: string; requestId: string }) {
 			if (data.type !== 'starlight-pack-token-request') return
@@ -70,6 +75,14 @@ test('hosted installation sends the JWT to native commands while Local needs no
 			__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:install|hosted_sync' && syncResponse) return syncResponse()
 					if (command === 'plugin:instance|instance_get')
 						return instanceExists ? { id: args.instanceId } : null
@@ -99,7 +112,13 @@ test('hosted installation sends the JWT to native commands while Local needs no
 		await setInstanceMode('instance', 'starlight')
 		assert.equal(tokenRequests, 4)
 		assert.deepEqual(
-			calls.map(({ command }) => command),
+			calls
+				.map(({ command }) => command)
+				.filter(
+					(command) =>
+						command.startsWith('plugin:install|') &&
+						command !== 'plugin:install|hosted_has_game_account',
+				),
 			[
 				'hosted_set_session',
 				'hosted_default',
@@ -210,9 +229,35 @@ test('hosted installation sends the JWT to native commands while Local needs no
 		assert.equal(tokenRequests, requestsBeforeLogout)
 		const attempts: string[] = []
 		const stopListening = onHostedPackAttemptStarted((id) => attempts.push(id))
+		accounts = []
+		const installCallsBeforeAccountFailure = calls.filter(
+			({ command }) =>
+				command.startsWith('plugin:install|') &&
+				command !== 'plugin:install|hosted_has_game_account',
+		).length
+		await assert.rejects(hostedSync('failed-instance'), {
+			message: HOSTED_ACCOUNT_REQUIRED_MESSAGE,
+		})
+		await assert.rejects(hostedCreate(), {
+			message: HOSTED_ACCOUNT_REQUIRED_MESSAGE,
+		})
+		assert.deepEqual(attempts, [])
+		assert.equal(
+			calls.filter(
+				({ command }) =>
+					command.startsWith('plugin:install|') &&
+					command !== 'plugin:install|hosted_has_game_account',
+			).length,
+			installCallsBeforeAccountFailure,
+		)
+		const unauthenticatedCreation = useHostedCreation()
+		await unauthenticatedCreation.install()
+		assert.equal(unauthenticatedCreation.installError.value, HOSTED_ACCOUNT_REQUIRED_MESSAGE)
+		assert.equal(unauthenticatedCreation.createdInstance.value, undefined)
+		accounts = [{ account_type: 'microsoft' }]
 		const unauthenticatedRetry = hostedSync('failed-instance')
-		assert.deepEqual(attempts, ['failed-instance'])
 		await assert.rejects(unauthenticatedRetry)
+		assert.deepEqual(attempts, ['failed-instance'])
 		stopListening()
 		await assert.rejects(hostedSync('failed-instance'))
 		assert.equal(attempts.length, 1)
@@ -560,3 +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/composables/use-app-event.ts

@@ -0,0 +1,17 @@
+import { onUnmounted } from 'vue'
+
+import { instance_listener } from '@/helpers/events.js'
+
+export interface InstanceAppEvent {
+	event: string
+	instance_id?: string
+}
+
+export function useAppEvent(type: 'instance', callback: (event: InstanceAppEvent) => void) {
+	if (type !== 'instance') return
+	let unlisten: (() => void) | undefined
+	void instance_listener(callback).then((dispose) => {
+		unlisten = dispose
+	})
+	onUnmounted(() => unlisten?.())
+}

apps/app-frontend/src/composables/use-image-thumbnail.ts

@@ -0,0 +1,154 @@
+import { convertFileSrc, invoke } from '@tauri-apps/api/core'
+import { type MaybeRefOrGetter, ref, toValue, watch } from 'vue'
+
+export type ImageThumbnailSource = {
+	instanceId: string
+	filePath: string
+	path: string
+}
+
+type ThumbnailCacheEntry = {
+	promise: Promise<string>
+	url?: string
+	users: number
+	lastUsed: number
+}
+
+const MAX_CONCURRENT_THUMBNAILS = 4
+const MAX_CACHED_THUMBNAILS = 256
+
+const thumbnailCache = new Map<string, ThumbnailCacheEntry>()
+const thumbnailQueue: Array<() => void> = []
+let activeThumbnailRequests = 0
+
+function runThumbnailQueue() {
+	while (activeThumbnailRequests < MAX_CONCURRENT_THUMBNAILS && thumbnailQueue.length > 0) {
+		activeThumbnailRequests += 1
+		thumbnailQueue.shift()?.()
+	}
+}
+
+function enqueueThumbnail<T>(task: () => Promise<T>) {
+	return new Promise<T>((resolve, reject) => {
+		thumbnailQueue.push(() => {
+			void task()
+				.then(resolve, reject)
+				.finally(() => {
+					activeThumbnailRequests -= 1
+					runThumbnailQueue()
+				})
+		})
+		runThumbnailQueue()
+	})
+}
+
+function removeThumbnail(cacheKey: string, entry: ThumbnailCacheEntry) {
+	if (thumbnailCache.get(cacheKey) !== entry) return
+	thumbnailCache.delete(cacheKey)
+	if (entry.url) {
+		URL.revokeObjectURL(entry.url)
+	} else {
+		void entry.promise.then(
+			(url) => URL.revokeObjectURL(url),
+			() => undefined,
+		)
+	}
+}
+
+function trimThumbnailCache() {
+	if (thumbnailCache.size <= MAX_CACHED_THUMBNAILS) return
+
+	const unused = [...thumbnailCache.entries()]
+		.filter(([, entry]) => entry.users === 0)
+		.sort(([, left], [, right]) => left.lastUsed - right.lastUsed)
+	for (const [cacheKey, entry] of unused) {
+		if (thumbnailCache.size <= MAX_CACHED_THUMBNAILS) break
+		removeThumbnail(cacheKey, entry)
+	}
+}
+
+function acquireThumbnail(source: ImageThumbnailSource, maxDimension: number, revision: unknown) {
+	const cacheKey = JSON.stringify([
+		source.instanceId,
+		source.filePath,
+		maxDimension,
+		revision ?? null,
+	])
+	let entry = thumbnailCache.get(cacheKey)
+	if (!entry) {
+		entry = {
+			users: 0,
+			lastUsed: performance.now(),
+			promise: enqueueThumbnail(async () => {
+				const bytes = await invoke<ArrayBuffer>('plugin:files|screenshot_thumbnail', {
+					instanceId: source.instanceId,
+					filePath: source.filePath,
+					maxDimension,
+				})
+				return URL.createObjectURL(new Blob([bytes]))
+			}),
+		}
+		thumbnailCache.set(cacheKey, entry)
+		void entry.promise.then(
+			(url) => {
+				entry!.url = url
+				trimThumbnailCache()
+			},
+			() => {
+				if (thumbnailCache.get(cacheKey) === entry) thumbnailCache.delete(cacheKey)
+			},
+		)
+	}
+
+	entry.users += 1
+	entry.lastUsed = performance.now()
+	return {
+		promise: entry.promise,
+		release: () => {
+			entry!.users = Math.max(0, entry!.users - 1)
+			entry!.lastUsed = performance.now()
+			trimThumbnailCache()
+		},
+	}
+}
+
+export function useImageThumbnail(
+	source: MaybeRefOrGetter<ImageThumbnailSource | null | undefined>,
+	maxDimension: MaybeRefOrGetter<number> = 512,
+	revision: MaybeRefOrGetter<string | number | undefined> = undefined,
+) {
+	const thumbnail = ref('')
+
+	watch(
+		[() => toValue(source), () => toValue(maxDimension), () => toValue(revision)],
+		([currentSource, currentMaxDimension, currentRevision], _, onCleanup) => {
+			thumbnail.value = ''
+			if (!currentSource) return
+
+			let active = true
+			const fallbackUrl = convertFileSrc(currentSource.path)
+			const acquired = acquireThumbnail(
+				currentSource,
+				Math.max(1, Math.round(currentMaxDimension)),
+				currentRevision,
+			)
+			onCleanup(() => {
+				active = false
+				acquired.release()
+			})
+
+			void acquired.promise.then(
+				(url) => {
+					if (active) thumbnail.value = url
+				},
+				(error) => {
+					console.warn('Could not create image thumbnail', error)
+					if (active) thumbnail.value = fallbackUrl
+				},
+			)
+		},
+		{ immediate: true },
+	)
+
+	return thumbnail
+}

apps/app-frontend/src/composables/useDropImport.ts

@@ -13,9 +13,9 @@ import type {
 	SymlinkMethodChoice,
 } from '@modrinth/ui'
 import { useDebugLogger, useGlobalDrop, useInstanceContext, useVIntl } from '@modrinth/ui'
+import { join } from '@tauri-apps/api/path'
 import { computed, type ComputedRef, nextTick, ref } from 'vue'
 import type { Router } from 'vue-router'
-import { join } from '@tauri-apps/api/path'
 
 import {
 	classifyDroppedItem,
@@ -1412,10 +1412,7 @@ export function useDropImport(options: DropImportOptions) {
 		cleanupLauncherZipTemp()
 	}
 
-	function resolvedInstancePath(
+	function resolvedInstancePath(inst: SelectedInstance): string | undefined {
-		inst: SelectedInstance,
-		ctx: ImportContext | null,
-	): string | undefined {
 		if (inst.compatibleMode) return inst.versionPath
 		return inst.path
 	}

apps/app-frontend/src/composables/useHostedCreation.ts

@@ -10,6 +10,10 @@ const createdInstance = ref<string>()
 const completed = ref(false)
 let generation = 0
 
+function errorMessage(cause: unknown) {
+	return cause instanceof Error ? cause.message : String(cause)
+}
+
 export function forgetHostedCreation(instanceId: string) {
 	if (createdInstance.value !== instanceId) return
 	generation++
@@ -27,7 +31,7 @@ export function markHostedCreationCompleted(instanceId: string) {
 export function markHostedCreationFailed(instanceId: string, cause: unknown) {
 	if (createdInstance.value !== instanceId) return
 	completed.value = false
-	installError.value = String(cause)
+	installError.value = errorMessage(cause)
 }
 
 export function useHostedCreation() {
@@ -63,7 +67,7 @@ export function useHostedCreation() {
 		} catch (cause) {
 			if (attempt === generation) {
 				if (createdInstance.value) markHostedCreationFailed(createdInstance.value, cause)
-				else installError.value = String(cause)
+				else installError.value = errorMessage(cause)
 			}
 		} finally {
 			installing.value = false

apps/app-frontend/src/composables/useInstanceConsole.ts

@@ -2,12 +2,14 @@ import { createConsoleState } from '@modrinth/ui'
 
 import {
 	clear_log_buffer,
-	get_live_log_buffer,
+	get_live_log_snapshot,
 	get_logs,
-	get_minecraft_latest_log_cursor,
 } from '@/helpers/logs'
 
-import { createLatestLogReader } from './latest-log-reader'
+import {
+	createLiveLogReconciler,
+	type SequencedLogEvent,
+} from './live-log-reconciler'
 
 type ConsoleState = ReturnType<typeof createConsoleState>
 
@@ -25,8 +27,17 @@ interface InstanceConsoleEntry {
 	historicalConsole: ConsoleState
 	historicalCache: Map<string, string>
 	logList: LogEntry[] | null
-	liveHistoryHydration: Promise<void> | null
+	liveLog: ReturnType<typeof createLiveLogReconciler<ProcessLogPayload>>
-	latestLog: ReturnType<typeof createLatestLogReader>
+}
+
+interface ProcessLogPayload extends SequencedLogEvent {
+	type: 'log4j' | 'legacy'
+	message?: string
+	logger_name?: string
+	level?: string
+	thread_name?: string
+	timestamp_millis?: number
+	throwable?: string
 }
 
 const instances = new Map<string, InstanceConsoleEntry>()
@@ -36,19 +47,28 @@ function getOrCreate(instanceId: string): InstanceConsoleEntry {
 	if (entry) return entry
 
 	const liveConsole = createConsoleState()
+	const liveLog = createLiveLogReconciler<ProcessLogPayload>(
+		() => get_live_log_snapshot(instanceId),
+		(snapshot) => {
+			liveConsole.clear()
+			void liveConsole.addLegacyLog(
+				snapshot.lines.map((line) => line.message).join('\n'),
+			)
+		},
+		(payload) => {
+			if (payload.type === 'log4j') {
+				liveConsole.addLog4jEvent(payload)
+			} else if (payload.message !== undefined) {
+				void liveConsole.addLegacyLog(payload.message)
+			}
+		},
+	)
 	entry = {
 		liveConsole,
 		historicalConsole: createConsoleState(),
 		historicalCache: new Map(),
 		logList: null,
-		liveHistoryHydration: null,
+		liveLog,
-		latestLog: createLatestLogReader(
-			(cursor) => get_minecraft_latest_log_cursor(instanceId, cursor),
-			(output, replace) => {
-				if (replace) liveConsole.clear()
-				void liveConsole.addLegacyLog(output)
-			},
-		),
 	}
 	instances.set(instanceId, entry)
 	return entry
@@ -56,28 +76,7 @@ function getOrCreate(instanceId: string): InstanceConsoleEntry {
 
 async function hydrate(instanceId: string): Promise<void> {
 	const entry = getOrCreate(instanceId)
-	if (entry.liveHistoryHydration) {
+	await entry.liveLog.sync()
-		return entry.liveHistoryHydration
-	}
-
-	const hydration = (async () => {
-		await entry.latestLog.refresh().catch(console.warn)
-		if (!entry.latestLog.active && entry.liveConsole.output.value.length === 0) {
-			const buffer = await get_live_log_buffer(instanceId)
-			if (!entry.latestLog.active && entry.liveConsole.output.value.length === 0) {
-				await entry.liveConsole.addLegacyLog(buffer)
-			}
-		}
-	})()
-
-	entry.liveHistoryHydration = hydration
-	try {
-		await hydration
-	} finally {
-		if (entry.liveHistoryHydration === hydration) {
-			entry.liveHistoryHydration = null
-		}
-	}
 }
 
 async function getHistoricalLogs(instanceId: string): Promise<LogEntry[]> {
@@ -109,15 +108,13 @@ function invalidate(instanceId: string): void {
 
 async function clearLive(instanceId: string): Promise<void> {
 	const entry = getOrCreate(instanceId)
-	entry.latestLog.clear()
+	await clear_log_buffer(instanceId)
-	entry.liveConsole.clear()
+	await entry.liveLog.resync()
-	await clear_log_buffer(instanceId).catch(() => {})
 }
 
-async function destroy(instanceId: string): Promise<void> {
+function destroy(instanceId: string): void {
-	instances.get(instanceId)?.latestLog.reset()
+	instances.get(instanceId)?.liveLog.dispose()
 	instances.delete(instanceId)
-	await clear_log_buffer(instanceId).catch(() => {})
 }
 
 export function useInstanceConsole(instanceId: string) {
@@ -130,13 +127,8 @@ export function useInstanceConsole(instanceId: string) {
 		getHistoricalContent: (filename: string) => getHistoricalContent(instanceId, filename),
 		invalidate: () => invalidate(instanceId),
 		clearLive: () => clearLive(instanceId),
-		refreshLive: () => entry.latestLog.refresh(),
+		appendLive: (payload: ProcessLogPayload) => entry.liveLog.accept(payload),
-		flushLive: () => entry.latestLog.flush(),
+		resyncLive: () => entry.liveLog.resync(),
-		acceptsProcessLogs: () => !entry.latestLog.active,
-		resetLive: () => {
-			entry.latestLog.reset()
-			entry.liveConsole.clear()
-		},
 		destroy: () => destroy(instanceId),
 	}
 }

apps/app-frontend/src/config.ts

@@ -4,7 +4,8 @@ export const AxolotlBrandConfig = Object.freeze({
 	productName: 'Starlight Launcher',
 	shortProductName: 'Starlight',
 	website: 'https://skin.starlight.cool/',
-	repositoryUrl: 'https://git.starlight.cool/Disy/StarLight-Yggdrasil-Server',
+	repositoryUrl: 'https://github.com/ApTx2012/Starlight_Lancher',
+	releasesUrl: 'https://github.com/ApTx2012/Starlight_Lancher/releases',
 	supportUrl: 'https://skin.starlight.cool/',
 	qqGroupNumber: '000000000',
 	qqChannelUrl: 'https://skin.starlight.cool/',

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-download-failures.test.ts

@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
+
 import { createHostedDownloadFailures } from './hosted-download-failures.ts'
 
 test('retry clears only its own failure before progress arrives and ignores late old events', () => {

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

@@ -1,10 +1,16 @@
 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'
 
 let sessionUpdate: Promise<void> = Promise.resolve()
 const attemptListeners = new Set<(instanceId: string) => void>()
@@ -20,6 +26,39 @@ function startHostedPackAttempt(instanceId: string) {
 	for (const listener of attemptListeners) listener(instanceId)
 }
 
+export async function requireHostedGameAccount(): Promise<void> {
+	if (await invokeHosted<boolean>('plugin:install|hosted_has_game_account')) return
+
+	// 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> {
 	const update = sessionUpdate
 		.catch(() => {})
@@ -99,13 +138,16 @@ export interface HostedSyncResult {
 }
 export const hostedDefault = () =>
 	invokeWithSession<HostedPublication>('plugin:install|hosted_default')
-export const hostedCreate = (gameDirRoot?: string | null) =>
+export const hostedCreate = async (gameDirRoot?: string | null) => {
-	invokeWithSession<string>('plugin:install|hosted_create', {
+	await requireHostedGameAccount()
+	return invokeWithSession<string>('plugin:install|hosted_create', {
 		gameDirRoot: gameDirRoot ?? null,
 	})
+}
 export const hostedBinding = (instanceId: string) =>
 	invokeHosted<HostedBinding | null>('plugin:install|hosted_binding', { instanceId })
-export const hostedSync = (instanceId: string) => {
+export const hostedSync = async (instanceId: string) => {
+	await requireHostedGameAccount()
 	startHostedPackAttempt(instanceId)
 	return invokeWithSession<HostedSyncResult>('plugin:install|hosted_sync', { instanceId })
 }

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-groups.ts

@@ -0,0 +1 @@
+export const MAX_INSTANCE_GROUP_NAME_LENGTH = 256

apps/app-frontend/src/helpers/instance-launch-state.test.ts

@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict'
 import { test } from 'node:test'
+
 import { isInstanceLaunching, launchOnce } from './instance-launch-state.ts'
 
 test('launches different instances concurrently and coalesces repeated pending clicks', async () => {

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

@@ -1,18 +1,19 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
-import { useNetworkStatus } from '../composables/useNetworkStatus.ts'
+
 import {
-	setSkinSiteFrame,
-	resetSkinSiteSession,
 	receiveSkinSiteMessage,
+	resetSkinSiteSession,
+	setSkinSiteFrame,
 	SKIN_SITE_ORIGIN,
 } from '../composables/skin-site-session.ts'
+import { useNetworkStatus } from '../composables/useNetworkStatus.ts'
 import {
+	type InstancePlayer,
+	onInstancePlayerChanged,
 	prepareInstancePlayer,
 	registerInstancePlayerPicker,
 	saveInstancePlayer,
-	onInstancePlayerChanged,
-	type InstancePlayer,
 } from './instance-player.ts'
 
 test('instance player selection persists independently from the globally selected account', async () => {

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

@@ -9,7 +9,7 @@ import {
 	type ContentItem,
 	type ContentOwner,
 } from '@modrinth/ui'
-import { invoke } from '@tauri-apps/api/core'
+import { convertFileSrc, invoke } from '@tauri-apps/api/core'
 
 import { isOfflineMode } from '@/composables/useNetworkStatus'
 import { buildGcCandidateChain, resolveAutoGcStrategy } from '@/helpers/gc/auto-selector'
@@ -18,8 +18,8 @@ import { detectGcStrategy, GC_STRATEGY_DEFINITIONS } from '@/helpers/gc/strategi
 import type { GcContext, ResolvedGcStrategyId } from '@/helpers/gc/types'
 import { setLastGcLaunchReport } from '@/helpers/gc-notice'
 import { getInstanceMode, prepareHostedSession } from '@/helpers/hosted-packs'
-import { prepareInstancePlayer } from '@/helpers/instance-player'
 import { launchOnce } from '@/helpers/instance-launch-state'
+import { prepareInstancePlayer } from '@/helpers/instance-player'
 import { AUTO_GC_PRESET_ARG } from '@/helpers/java-arguments'
 import { get_jre, get_memory_status } from '@/helpers/jre.js'
 import { get as getSettings } from '@/helpers/settings'
@@ -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,
@@ -1124,3 +1222,90 @@ export async function check_symlink_capability(): Promise<SymlinkCapability> {
 export async function allow_symlink_target(path: string): Promise<void> {
 	return await invoke('allow_symlink_target', { path })
 }
+
+export type ScreenshotKey = { instance_id: string; file_name: string }
+export type InstanceScreenshot = {
+	id: string
+	instance_id: string
+	instance_name: string
+	file_name: string
+	created_at: string
+	modified_at: number
+	group_id: string | null
+	path: string
+	url: string
+}
+export type ScreenshotGroup = { id: string; name: string }
+export type ScreenshotGroupImport = ScreenshotGroup & { screenshot_ids: string[] }
+export type ScreenshotGroupMembershipUpdate = { screenshot_id: string; group_id: string | null }
+
+export async function list_screenshots(instanceId: string): Promise<InstanceScreenshot[]> {
+	return await invoke('plugin:instance|instance_list_screenshots', { instanceId })
+}
+export async function list_all_screenshots(): Promise<InstanceScreenshot[]> {
+	return await invoke('plugin:instance|instance_list_all_screenshots')
+}
+export async function list_synced_screenshots(): Promise<InstanceScreenshot[]> {
+	return await invoke('plugin:instance|instance_list_synced_screenshots')
+}
+export async function list_screenshot_groups(): Promise<ScreenshotGroup[]> {
+	return await invoke('plugin:instance|instance_list_screenshot_groups')
+}
+export async function create_screenshot_group(
+	name: string,
+	screenshotIds: string[],
+): Promise<ScreenshotGroup> {
+	return await invoke('plugin:instance|instance_create_screenshot_group', {
+		name,
+		ids: screenshotIds,
+	})
+}
+export async function rename_screenshot_group(
+	id: string,
+	newName: string,
+): Promise<ScreenshotGroup> {
+	return await invoke('plugin:instance|instance_rename_screenshot_group', { id, newName })
+}
+export async function delete_screenshot_group(id: string): Promise<void> {
+	return await invoke('plugin:instance|instance_delete_screenshot_group', { id })
+}
+export async function set_screenshot_group_memberships(
+	updates: ScreenshotGroupMembershipUpdate[],
+): Promise<void> {
+	return await invoke('plugin:instance|instance_set_screenshot_group_memberships', { updates })
+}
+export async function import_screenshot_groups(groups: ScreenshotGroupImport[]): Promise<void> {
+	return await invoke('plugin:instance|instance_import_screenshot_groups', { groups })
+}
+export async function save_edited_screenshot(
+	key: ScreenshotKey,
+	pngBytes: Uint8Array,
+	mode: 'create_copy' | 'replace_edit',
+): Promise<InstanceScreenshot> {
+	return await invoke('plugin:instance|instance_save_edited_screenshot', {
+		key,
+		bytes: Array.from(pngBytes),
+		mode,
+	})
+}
+export async function delete_screenshots(keys: ScreenshotKey[]): Promise<void> {
+	return await invoke('plugin:instance|instance_delete_screenshots', { keys })
+}
+export async function export_screenshots(keys: ScreenshotKey[], path: string): Promise<void> {
+	return await invoke('plugin:instance|instance_export_screenshots', { keys, path })
+}
+export async function open_screenshot(key: ScreenshotKey): Promise<void> {
+	return await invoke('plugin:instance|instance_open_screenshot', { key })
+}
+export async function move_screenshots(
+	keys: ScreenshotKey[],
+	targetInstanceId: string,
+): Promise<ScreenshotKey[]> {
+	return await invoke('plugin:instance|instance_move_screenshots', {
+		keys,
+		target: targetInstanceId,
+	})
+}
+export function getInstanceIconUrl(iconPath?: string | null): string | undefined {
+	return iconPath ? convertFileSrc(iconPath) : undefined
+}

apps/app-frontend/src/helpers/logs.js

@@ -64,14 +64,9 @@ export async function get_latest_log_cursor(instanceId, cursor) {
 	return await invoke('plugin:logs|logs_get_latest_log_cursor', { instanceId, cursor })
 }
 
-/// Read Minecraft's logs/latest.log from a cursor.
+/// Get the authoritative sequenced live-log snapshot from the Rust ring buffer.
-export async function get_minecraft_latest_log_cursor(instanceId, cursor) {
+export async function get_live_log_snapshot(instanceId) {
-	return await invoke('plugin:logs|logs_get_minecraft_latest_log_cursor', { instanceId, cursor })
+	return await invoke('plugin:logs|logs_get_live_log_snapshot', { instanceId })
-}
-
-/// Get all buffered live log lines for an instance from the Rust ring buffer
-export async function get_live_log_buffer(instanceId) {
-	return await invoke('plugin:logs|logs_get_live_log_buffer', { instanceId })
 }
 
 /// Clear the live log buffer for an instance on the Rust side

apps/app-frontend/src/helpers/post-upgrade-notice.test.ts

@@ -82,20 +82,20 @@ test('notice query uses the target instance value and registered Tauri command',
 	assert.match(tauriSource, /tauri::generate_handler!\[[\s\S]*instance_get_post_upgrade_notice/)
 })
 
-test('result uses Modrinth Card and Accordion for collapsed compatibility warnings', () => {
+test('result collections use Modrinth Card and Accordion for collapsed compatibility warnings', () => {
 	const source = readFileSync(
-		new URL('../pages/instance/upgrade/UpgradeResultDetails.vue', import.meta.url),
+		new URL('../pages/instance/upgrade/UpgradeResultCollections.vue', import.meta.url),
 		'utf8',
 	)
-	assert.match(source, /<Card v-if="warningRows\.length"/)
+	assert.match(source, /<Card v-if="warnings\.length"/)
-	assert.match(source, /<Accordion[\s\S]*:open-by-default="warningsExpandedByDefault"/)
+	assert.match(source, /<Accordion[\s\S]*:open-by-default="warningsDefaultOpen"/)
 	assert.match(source, /<TriangleAlertIcon/)
 })
 
 test('runtime icon references use names exported by the assets package', () => {
 	const downloadsSource = readFileSync(new URL('../pages/Downloads.vue', import.meta.url), 'utf8')
 	const resultSource = readFileSync(
-		new URL('../pages/instance/upgrade/UpgradeResultDetails.vue', import.meta.url),
+		new URL('../pages/instance/upgrade/UpgradeResultCollections.vue', import.meta.url),
 		'utf8',
 	)
 	const assetsSource = readFileSync(

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
@@ -172,6 +173,9 @@ export type AppSettings = {
 	home_layout: HomeLayout
 	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[]
 
@@ -213,6 +217,9 @@ 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' &&
@@ -239,6 +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/tagged-mod-progress.test.ts

@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict'
 import test from 'node:test'
+
 import { createTaggedModProgress } from './tagged-mod-progress.ts'
 
 const parent = (id = 'parent', fraction: number | null = 0, error = '') => ({

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/helpers/ui-scale.ts

@@ -0,0 +1,54 @@
+import { invoke } from '@tauri-apps/api/core'
+import { ref, watch } from 'vue'
+
+/**
+ * 启动器界面缩放（百分比）。
+ * 通过 Tauri 原生 webview zoom（Rust 侧 set_zoom）应用，
+ * 缩放值持久化到后端设置数据库（settings.ui_scale）。
+ */
+const MIN_UI_SCALE = 50
+const MAX_UI_SCALE = 200
+const DEFAULT_UI_SCALE = 100
+
+/** 把缩放值限制在允许范围内。 */
+function clampUiScale(value: number): number {
+	if (!Number.isFinite(value)) return DEFAULT_UI_SCALE
+	return Math.min(MAX_UI_SCALE, Math.max(MIN_UI_SCALE, Math.round(value)))
+}
+
+export const uiScale = ref(DEFAULT_UI_SCALE)
+
+export function setUiScale(value: number): void {
+	uiScale.value = clampUiScale(value)
+}
+
+export function resetUiScale(): void {
+	setUiScale(DEFAULT_UI_SCALE)
+}
+
+export { DEFAULT_UI_SCALE, MAX_UI_SCALE, MIN_UI_SCALE }
+
+/**
+ * 把缩放值应用到原生 webview。
+ * 同时保留 --ui-scale CSS 变量，供依赖它的样式/锚点使用。
+ */
+async function applyUiScale(value: number): Promise<void> {
+	const factor = value / 100
+	document.documentElement.style.setProperty('--ui-scale', String(factor))
+	try {
+		await invoke('plugin:settings|set_ui_scale', { factor })
+	} catch (error) {
+		console.warn('应用界面缩放失败', error)
+	}
+}
+
+/**
+ * 初始化缩放：应用当前值，并在变化时同步到原生 webview。
+ * 初值由调用方（App 初始化流程）在读取后端设置后通过 setUiScale 覆盖。
+ */
+export function installUiScale(): void {
+	void applyUiScale(uiScale.value)
+	watch(uiScale, (value) => {
+		void applyUiScale(value)
+	})
+}

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

@@ -4,9 +4,9 @@ import { invoke } from '@tauri-apps/api/core'
 import dayjs from 'dayjs'
 
 import { isOfflineMode } from '@/composables/useNetworkStatus'
-import { prepareInstancePlayer } from '@/helpers/instance-player'
 import { getInstanceMode, prepareHostedSession } from '@/helpers/hosted-packs'
 import { get_full_path, resolveGcLaunchIntent } from '@/helpers/instance'
+import { prepareInstancePlayer } from '@/helpers/instance-player'
 import { openPath } from '@/helpers/utils'
 
 type BaseWorld = {
@@ -20,7 +20,6 @@ type BaseWorld = {
 export type WorldType = 'singleplayer' | 'server'
 export type DisplayStatus = 'normal' | 'hidden' | 'favorite'
 
-
 export type SingleplayerWorld = BaseWorld & {
 	type: 'singleplayer'
 	path: string
@@ -251,7 +250,7 @@ export async function start_join_singleplayer_world(
 	world: string,
 ): Promise<unknown> {
 	await prepareInstancePlayer(instanceId)
-	if (await getInstanceMode(instanceId) === 'starlight') await prepareHostedSession()
+	if ((await getInstanceMode(instanceId)) === 'starlight') await prepareHostedSession()
 	const { args, gcIntent } = await resolveGcLaunchIntent(instanceId)
 	return await invoke('plugin:worlds|start_join_singleplayer_world', {
 		instanceId,
@@ -264,7 +263,7 @@ export async function start_join_singleplayer_world(
 
 export async function start_join_server(instanceId: string, address: string): Promise<unknown> {
 	await prepareInstancePlayer(instanceId)
-	if (await getInstanceMode(instanceId) === 'starlight') await prepareHostedSession()
+	if ((await getInstanceMode(instanceId)) === 'starlight') await prepareHostedSession()
 	const { args, gcIntent } = await resolveGcLaunchIntent(instanceId)
 	return await invoke('plugin:worlds|start_join_server', {
 		instanceId,