fix: 补 EditInstance DTO 缺失的 window_title 字段与透传

解决 en-US/zh-CN locale JSON 的末尾追加冲突：窗口标题键与公告中心键均保留。

.github/workflows/changelog-comment.yml

@@ -12,7 +12,7 @@ on:
 
 permissions:
   issues: write
-  pull-requests: read
+  pull-requests: write
 
 jobs:
   comment:
@@ -21,7 +21,7 @@ jobs:
 
     permissions:
       issues: write
-      pull-requests: read
+      pull-requests: write
       contents: read
 
     steps:

.github/workflows/check-rust.yml

@@ -22,5 +22,5 @@ jobs:
           node-version-file: .nvmrc
       - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
       - uses: cargo-bins/cargo-binstall@dc19f1e48450eefe5a29b8da6c6b00a87d730b37 # v1.18.1
-      - run: cargo binstall --no-confirm cargo-shear
+      - run: cargo binstall --no-confirm cargo-shear@1.13.4
       - run: cargo shear

Cargo.lock

@@ -6841,7 +6841,7 @@ dependencies = [
 
 [[package]]
 name = "theseus"
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 dependencies = [
  "ariadne",
  "async-minecraft-ping",
@@ -6945,7 +6945,7 @@ dependencies = [
 
 [[package]]
 name = "theseus_gui"
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 dependencies = [
  "ashpd",
  "async_zip",

apps/app-frontend/package.json

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

apps/app-frontend/src/App.vue

@@ -72,6 +72,7 @@ import InstancePlayerModal from '@/components/instance/InstancePlayerModal.vue'
 import TaggedModDownloadsModal from '@/components/instance/TaggedModDownloadsModal.vue'
 import InstanceExportModal from '@/components/lab/recipe-generator/InstanceExportModal.vue'
 import AccountsCard from '@/components/ui/AccountsCard.vue'
+import AnniversaryCelebration from '@/components/ui/AnniversaryCelebration.vue'
 import AppActionBar from '@/components/ui/AppActionBar.vue'
 import AxolotlLogo from '@/components/ui/AxolotlLogo.vue'
 import Breadcrumbs from '@/components/ui/Breadcrumbs.vue'
@@ -94,6 +95,7 @@ import NavRail from '@/components/ui/NavRail.vue'
 import OnboardingOverlay from '@/components/ui/onboarding/OnboardingOverlay.vue'
 import QuickInstanceSwitcher from '@/components/ui/QuickInstanceSwitcher.vue'
 import SkinSiteSessionFrame from '@/components/ui/SkinSiteSessionFrame.vue'
+import RemoteAnnouncements from '@/components/ui/RemoteAnnouncements.vue'
 import StartupAnnouncementModal from '@/components/ui/StartupAnnouncementModal.vue'
 import SplashScreen from '@/components/ui/SplashScreen.vue'
 import WindowControls from '@/components/ui/WindowControls.vue'
@@ -2221,10 +2223,12 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 </script>
 
 <template>
+	<AnniversaryCelebration />
 	<SplashScreen v-if="!stateFailed" ref="splashScreen" data-tauri-drag-region />
 	<SkinSiteSessionFrame v-if="stateInitialized" />
 	<InstancePlayerModal v-if="stateInitialized" />
 	<StartupAnnouncementModal ref="startupAnnouncementModal" />
+	<RemoteAnnouncements :ready="stateInitialized && !showOnboarding && !stateFailed" />
 	<div id="teleports"></div>
 	<div
 		v-if="stateInitialized && themeStore.customBackgroundPath && !themeStore.transparentBackground"

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

@@ -32,6 +32,102 @@ export const ANNOUNCEMENT_CHANGE_TYPES: readonly AnnouncementChangeType[] = [
 ]
 
 export const launcherAnnouncements: readonly LauncherAnnouncement[] = [
+	{
+		id: 'launcher-1.0.2-beta4',
+		version: '1.0.2-beta4',
+		publishedAt: '2026-10-08',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta4',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta4',
+		},
+		changes: {
+			added: [
+				{
+					'en-US': 'Added armor and armor-trim rendering to the skin preview, letting you try on armor pieces and trim patterns directly in the skin editor.',
+					'zh-CN': '皮肤预览新增盔甲与盔甲纹饰渲染，可在皮肤编辑器内直接试穿各部位盔甲并调整纹饰图案。',
+				},
+				{
+					'en-US': 'Armor preview selections in the skin editor are now saved locally, so they persist across sessions.',
+					'zh-CN': '皮肤编辑器中的盔甲预览选择现在会保存在本地，跨会话保留。',
+				},
+			],
+			changed: [
+				{
+					'en-US': 'Improved download scheduling to reduce concurrency automatically when tasks are waiting for capacity, making large Minecraft installations more reliable on constrained connections.',
+					'zh-CN': '优化下载任务调度：任务因容量不足排队时会自动降低并发，提升大型 Minecraft 版本在受限网络环境下的安装稳定性。',
+				},
+			],
+			fixed: [
+				{
+					'en-US': 'Fixed downloads timing out while waiting for internal connection capacity, which could cause Minecraft installations to fail even when the network was available.',
+					'zh-CN': '修复下载任务等待内部连接容量时过早超时，导致网络正常的情况下 Minecraft 安装仍可能失败的问题。',
+				},
+				{
+					'en-US': 'Fixed instance group changes not saving for some instances.',
+					'zh-CN': '修复部分实例的分组修改无法保存的问题。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta3',
+		version: '1.0.2-beta3',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta3',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta3',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US': 'Fixed the anniversary celebration banner not showing above the window title bar, and made the banner background semi-transparent so the content behind it stays visible.',
+					'zh-CN': '修复周年庆庆祝横幅被窗口标题栏遮挡、无法显示的问题，并将横幅背景改为半透明，避免遮住下方内容。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta2',
+		version: '1.0.2-beta2',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta2',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta2',
+		},
+		changes: {
+			fixed: [
+				{
+					'en-US': 'Fixed the launcher failing to start with "no such table: synced_pack_catalog": the cross-instance sync migration was missing the synced_pack_catalog and synced_pack_instances tables.',
+					'zh-CN': '修复启动器因 "no such table: synced_pack_catalog" 无法启动的问题：跨实例同步迁移遗漏了 synced_pack_catalog 与 synced_pack_instances 两张表。',
+				},
+			],
+		},
+	},
+	{
+		id: 'launcher-1.0.2-beta1',
+		version: '1.0.2-beta1',
+		publishedAt: '2026-10-04',
+		title: {
+			'en-US': 'Starlight Launcher 1.0.2-beta1',
+			'zh-CN': 'Starlight Launcher 1.0.2-beta1',
+		},
+		changes: {
+			added: [
+				{
+					'en-US': 'Cross-instance sync: share game options, resource packs, data packs, multiplayer servers, command history, and creative hotbars across instances, with per-option toggles and a fine-grained game-settings editor.',
+					'zh-CN': '跨实例同步：可跨实例共享游戏选项、资源包、数据包、多人服务器、命令历史与创造模式快捷栏，支持逐项开关与精细的游戏设置编辑器。',
+				},
+				{
+					'en-US': 'Starlight turns 12! On October 4th every year the launcher now shows a celebration banner and falling confetti. The anniversary number is computed from 2014.',
+					'zh-CN': 'Starlight 十二周年！每年 10 月 4 日，启动器会显示庆祝横幅与飘落的彩带、蛋糕，周年数按 2014 年起算。',
+				},
+				{
+					'en-US': 'Added a developer feature flag to preview the anniversary celebration at any time.',
+					'zh-CN': '新增开发者功能开关，可随时预览周年庆效果。',
+				},
+			],
+		},
+	},
 	{
 		id: 'launcher-1.0.1',
 		version: '1.0.1',

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

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

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

@@ -67,6 +67,23 @@
 				</div>
 			</template>
 		</Dropdown>
+		<ButtonStyled
+			v-tooltip="formatMessage(messages.announcements)"
+			type="transparent"
+			circular
+		>
+			<button
+				:aria-label="formatMessage(messages.announcements)"
+				class="relative"
+				@click="openAnnouncementCenter"
+			>
+				<NewspaperIcon />
+				<span
+					v-if="announcementUnreadCount"
+					class="absolute right-0 top-0 size-2 rounded-full bg-red ring-2 ring-bg-raised"
+				/>
+			</button>
+		</ButtonStyled>
 		<ButtonStyled
 			v-if="!isDownloadsPage && hasActiveDownloads && !hasVisibleActiveDownloadToasts"
 			color="brand"
@@ -190,6 +207,7 @@
 <script setup lang="ts">
 import {
 	BellIcon,
+	NewspaperIcon,
 	DownloadIcon,
 	DropdownIcon,
 	OnlineIndicatorIcon,
@@ -211,7 +229,7 @@ import {
 } from '@modrinth/ui'
 import { convertFileSrc } from '@tauri-apps/api/core'
 import { Dropdown } from 'floating-vue'
-import { computed, onBeforeUnmount, ref, watch } from 'vue'
+import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 
 import AppUpdateButton from '@/components/ui/app-update-button/index.vue'
@@ -222,6 +240,10 @@ import { get_many as getInstances } from '@/helpers/instance'
 import { get_all as getRunningProcesses, kill as killProcess } from '@/helpers/process'
 import type { LoadingBar } from '@/helpers/state'
 import { progress_bars_list } from '@/helpers/state'
+import {
+	OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT,
+	REMOTE_ANNOUNCEMENTS_UPDATED_EVENT,
+} from '@/helpers/remote-announcements'
 import type { GameInstance } from '@/helpers/types'
 import { downloadBarTypes, injectDownloadManager } from '@/providers/download-manager'
 
@@ -231,6 +253,25 @@ const popupNotificationManager = injectPopupNotificationManager()
 const downloadManager = injectDownloadManager()
 const { formatMessage } = useVIntl()
 
+const announcementUnreadCount = ref(0)
+
+function openAnnouncementCenter() {
+	window.dispatchEvent(new CustomEvent(OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT))
+}
+
+function updateAnnouncementCount(event: Event) {
+	const detail = (event as CustomEvent<{ unreadKeys?: string[] }>).detail
+	announcementUnreadCount.value = detail?.unreadKeys?.length ?? 0
+}
+
+onMounted(() => {
+	window.addEventListener(REMOTE_ANNOUNCEMENTS_UPDATED_EVENT, updateAnnouncementCount)
+})
+
+onBeforeUnmount(() => {
+	window.removeEventListener(REMOTE_ANNOUNCEMENTS_UPDATED_EVENT, updateAnnouncementCount)
+})
+
 type NotificationHistoryItem = {
 	key: string
 	createdAt?: number
@@ -370,6 +411,10 @@ const messages = defineMessages({
 		id: 'app.action-bar.notifications',
 		defaultMessage: 'Notifications',
 	},
+	announcements: {
+		id: 'app.action-bar.announcements',
+		defaultMessage: 'Announcements',
+	},
 	clearNotifications: {
 		id: 'app.action-bar.notifications.clear',
 		defaultMessage: 'Clear all',

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

@@ -0,0 +1,388 @@
+<script setup lang="ts">
+import {
+	Button,
+	commonMessages,
+	defineMessages,
+	NewModal,
+	useModalStack,
+	useVIntl,
+} from '@modrinth/ui'
+import { renderString } from '@modrinth/utils'
+import { openUrl } from '@tauri-apps/plugin-opener'
+import { computed, nextTick, onMounted, onUnmounted, reactive, ref, watch } from 'vue'
+
+import {
+	announcementKey,
+	isAnnouncementActive,
+	OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT,
+	parseAnnouncements,
+	REMOTE_ANNOUNCEMENTS_UPDATED_EVENT,
+	type RemoteAnnouncement,
+	safeAnnouncementUrl,
+} from '@/helpers/remote-announcements'
+
+const props = defineProps<{ ready: boolean; previewOnly?: boolean }>()
+const { formatMessage } = useVIntl()
+const { hasModal } = useModalStack()
+const messages = defineMessages({
+	view: { id: 'app.remote-announcements.view', defaultMessage: 'View announcement' },
+	unread: { id: 'app.remote-announcements.unread', defaultMessage: 'Unread' },
+	readAll: {
+		id: 'app.remote-announcements.read-all',
+		defaultMessage: 'Mark all announcements as read',
+	},
+	centerTitle: { id: 'app.remote-announcements.center-title', defaultMessage: 'Announcements' },
+	empty: { id: 'app.remote-announcements.empty', defaultMessage: 'No announcements' },
+	previewTitle: {
+		id: 'app.remote-announcements.preview-title',
+		defaultMessage: 'Announcement style preview',
+	},
+	previewSummary: {
+		id: 'app.remote-announcements.preview-summary',
+		defaultMessage:
+			'This is a local preview. Select View announcement to preview the full Markdown content.',
+	},
+	previewContent: {
+		id: 'app.remote-announcements.preview-content',
+		defaultMessage:
+			'## Announcement preview\n\nThis is **sample content**, not a published announcement.\n\n- Supports headings, lists, and links\n- Close buttons are always available\n\n> Previewing does not change real announcement read status.\n\n| Type | Display |\n| --- | --- |\n| Modal | Full Markdown content |\n| Popup | Summary, then full content |\n\n[Visit the website](https://skin.starlight.cool/)',
+	},
+	previewAction: { id: 'app.remote-announcements.preview-action', defaultMessage: 'Visit website' },
+})
+const modal = ref<InstanceType<typeof NewModal>>()
+const selected = ref<RemoteAnnouncement | null>(null)
+const active = ref(false)
+const centerOpen = ref(false)
+const startupNotice = ref<RemoteAnnouncement | null>(null)
+const html = computed(() => renderString(selected.value?.content ?? ''))
+const stateKey = 'starlight-remote-announcements-v2'
+const read = reactive(new Set<string>())
+const queuedThisSession = new Set<string>()
+const startupNotified = new Set<string>()
+let items: RemoteAnnouncement[] = []
+let pending: RemoteAnnouncement[] = []
+let cacheKey = ''
+let cacheLoaded = false
+let disposed = false
+let interval: ReturnType<typeof setInterval> | undefined
+let advanceTimer: ReturnType<typeof setTimeout> | undefined
+
+function persist() {
+	if (props.previewOnly) return
+	try {
+		localStorage.setItem(
+			stateKey,
+			JSON.stringify({
+				read: [...read].slice(-1000),
+			}),
+		)
+	} catch {
+		// localStorage may be unavailable (private mode / quota)
+	}
+}
+function emitState() {
+	window.dispatchEvent(
+		new CustomEvent(REMOTE_ANNOUNCEMENTS_UPDATED_EVENT, {
+			detail: {
+				items,
+				unreadKeys: items.filter((item) => !read.has(announcementKey(item))).map(announcementKey),
+			},
+		}),
+	)
+}
+function openCenter(item?: RemoteAnnouncement) {
+	if (!props.ready || disposed) return
+	centerOpen.value = true
+	if (item) {
+		startupNotice.value = null
+		selectAnnouncement(item)
+	} else if (!selected.value && items.length) {
+		selectAnnouncement(items[0])
+	}
+	void nextTick(() => modal.value?.show())
+}
+function handleOpenCenter() {
+	if (props.previewOnly) return
+	openCenter()
+}
+async function show(item: RemoteAnnouncement) {
+	if (
+		disposed ||
+		!props.ready ||
+		!isAnnouncementActive(item) ||
+		(hasModal.value && !active.value && !centerOpen.value)
+	)
+		return
+	centerOpen.value = true
+	active.value = true
+	selectAnnouncement(item)
+	await nextTick()
+	if (!disposed) modal.value?.show()
+}
+function selectAnnouncement(item: RemoteAnnouncement) {
+	selected.value = item
+	const key = announcementKey(item)
+	read.add(key)
+	pending = pending.filter((entry) => announcementKey(entry) !== key)
+	persist()
+	emitState()
+}
+function markAllRead() {
+	for (const item of items) {
+		read.add(announcementKey(item))
+	}
+	pending = []
+	persist()
+	emitState()
+}
+function advance() {
+	if (disposed || !props.ready || hasModal.value || active.value) return
+	const next = pending.shift()
+	if (next) {
+		void show(next)
+		return
+	}
+	for (const item of items) {
+		const key = announcementKey(item)
+		if (
+			item.type === 'notification' &&
+			!startupNotified.has(key) &&
+			!read.has(key) &&
+			isAnnouncementActive(item)
+		) {
+			startupNotice.value = item
+			startupNotified.add(key)
+			setTimeout(() => {
+				if (startupNotice.value === item) {
+					startupNotice.value = null
+					advance()
+				}
+			}, 8000)
+			break
+		}
+	}
+}
+function closed() {
+	active.value = false
+	centerOpen.value = false
+	if (advanceTimer) clearTimeout(advanceTimer)
+	advanceTimer = setTimeout(advance, 350)
+}
+function sync(next: RemoteAnnouncement[], fresh: boolean) {
+	items = next.filter((item) => isAnnouncementActive(item))
+	const keys = new Set(items.map(announcementKey))
+	pending = pending.filter((item) => keys.has(announcementKey(item)))
+	if (selected.value && !keys.has(announcementKey(selected.value))) selected.value = null
+	emitState()
+	if (fresh) {
+		for (const item of items) {
+			const key = announcementKey(item)
+			if (
+				item.type === 'modal' &&
+				!queuedThisSession.has(key) &&
+				(!read.has(key) || item.priority === 'critical')
+			) {
+				queuedThisSession.add(key)
+				pending.push(item)
+			}
+		}
+		advance()
+	}
+}
+function loadCache() {
+	if (cacheLoaded || !cacheKey) return
+	cacheLoaded = true
+	try {
+		const cached = JSON.parse(localStorage.getItem(cacheKey) ?? 'null')
+		if (cached && typeof cached.savedAt === 'number' && Date.now() - cached.savedAt < 86400000) {
+			const parsed = parseAnnouncements(cached.items)
+			if (parsed) sync(parsed, false)
+		}
+	} catch {
+		// Ignore malformed or expired cache payloads
+	}
+}
+async function refresh() {
+	// Remote fetching is disabled until Starlight has its own announcements API.
+	// We still load any previously cached items so the center has content to show.
+	if (disposed) return
+	loadCache()
+}
+async function openLink(value: unknown) {
+	const url = safeAnnouncementUrl(value)
+	if (!url) return
+	try {
+		await openUrl(url)
+	} catch {
+		// Opener may reject unknown schemes
+	}
+}
+function contentClick(event: MouseEvent) {
+	const link = event.target instanceof Element ? event.target.closest('a') : null
+	if (!link) return
+	event.preventDefault()
+	event.stopPropagation()
+	void openLink(link.getAttribute('href'))
+}
+function preview(type: RemoteAnnouncement['type'], withAction = false) {
+	if (!props.previewOnly || !props.ready || hasModal.value || disposed) return
+	const now = new Date().toISOString()
+	const item: RemoteAnnouncement = {
+		id: 'local-preview-' + type,
+		title: formatMessage(messages.previewTitle),
+		summary: formatMessage(messages.previewSummary),
+		content: formatMessage(messages.previewContent),
+		type,
+		priority: 'normal',
+		starts_at: now,
+		ends_at: null,
+		published_at: now,
+		action_label: withAction ? formatMessage(messages.previewAction) : null,
+		action_url: withAction ? 'https://skin.starlight.cool/' : null,
+	}
+	read.clear()
+	queuedThisSession.clear()
+	sync([item], true)
+}
+defineExpose({ preview })
+onMounted(() => {
+	if (props.previewOnly) return
+	try {
+		const saved = JSON.parse(localStorage.getItem(stateKey) ?? 'null')
+		if (saved && Array.isArray(saved.read))
+			for (const key of saved.read) if (typeof key === 'string') read.add(key)
+	} catch {
+		// Ignore malformed local read-state
+	}
+	window.addEventListener(OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT, handleOpenCenter)
+	const start = () => {
+		if (disposed) return
+		void refresh()
+		interval = setInterval(() => {
+			sync(items, false)
+			advance()
+		}, 15000)
+	}
+	// Defer the startup request until after first paint.
+	if (typeof requestIdleCallback === 'function') {
+		requestIdleCallback(start, { timeout: 2000 })
+	} else {
+		setTimeout(start, 500)
+	}
+})
+watch([() => props.ready, hasModal], () => {
+	if (advanceTimer) clearTimeout(advanceTimer)
+	advanceTimer = setTimeout(advance, 350)
+})
+onUnmounted(() => {
+	disposed = true
+	if (interval) clearInterval(interval)
+	if (advanceTimer) clearTimeout(advanceTimer)
+	window.removeEventListener(OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT, handleOpenCenter)
+})
+</script>
+
+<template>
+	<div
+		v-if="startupNotice"
+		class="fixed right-4 top-16 z-50 w-[22rem] max-w-[calc(100vw-2rem)] rounded-xl border border-surface-5 bg-surface-3 p-3 shadow-lg"
+	>
+		<button class="w-full text-left" @click="startupNotice && openCenter(startupNotice)">
+			<div class="mb-1 text-xs font-semibold uppercase text-brand">
+				{{ formatMessage(messages.unread) }}
+			</div>
+			<div class="font-semibold text-[var(--color-text-primary)]">{{ startupNotice.title }}</div>
+			<div
+				v-if="startupNotice.summary"
+				class="mt-1 line-clamp-2 text-sm text-[var(--color-text-tertiary)]"
+			>
+				{{ startupNotice.summary }}
+			</div>
+		</button>
+	</div>
+	<NewModal
+		ref="modal"
+		:header="formatMessage(messages.centerTitle)"
+		:on-hide="closed"
+		max-width="80vw"
+		width="80vw"
+		max-content-height="calc(80vh - 8rem)"
+		scrollable
+	>
+		<div class="flex h-[calc(80vh-8rem)] min-h-0 gap-3">
+			<aside class="flex min-h-0 w-[32%] min-w-[14rem] flex-col border-r border-surface-5 pr-3">
+				<div class="mb-2 flex items-center justify-between">
+					<span class="font-semibold text-[var(--color-text-primary)]">{{
+						formatMessage(messages.centerTitle)
+					}}</span>
+					<Button
+						v-if="items.some((item) => !read.has(announcementKey(item)))"
+						@click="markAllRead"
+						>{{ formatMessage(messages.readAll) }}</Button
+					>
+				</div>
+				<div
+					v-if="!items.length"
+					class="py-8 text-center text-sm text-[var(--color-text-tertiary)]"
+				>
+					{{ formatMessage(messages.empty) }}
+				</div>
+				<div v-else class="flex min-h-0 flex-col gap-1 overflow-auto">
+					<button
+						v-for="item in items"
+						:key="announcementKey(item)"
+						class="flex items-start gap-2 rounded-lg p-2 text-left hover:bg-surface-4"
+						:class="{
+							'bg-surface-4': selected && announcementKey(selected) === announcementKey(item),
+						}"
+						@click="selectAnnouncement(item)"
+					>
+						<span
+							class="mt-1.5 size-2 shrink-0 rounded-full"
+							:class="read.has(announcementKey(item)) ? 'opacity-0' : 'bg-red'"
+						/>
+						<span class="min-w-0 flex-1">
+							<span class="block truncate font-medium text-[var(--color-text-primary)]">{{
+								item.title
+							}}</span>
+							<span class="block line-clamp-2 text-xs text-[var(--color-text-tertiary)]">{{
+								item.summary || item.content
+							}}</span>
+						</span>
+					</button>
+				</div>
+			</aside>
+			<section v-if="selected" class="min-h-0 min-w-0 flex-1 overflow-auto px-1">
+				<h2 class="mb-4 text-xl font-semibold text-[var(--color-text-primary)]">
+					{{ selected.title }}
+				</h2>
+				<div
+					class="markdown-body break-words"
+					@click="contentClick"
+					@auxclick="contentClick"
+					v-html="html"
+				/>
+				<div class="mt-4 flex justify-end">
+					<Button
+						v-if="selected.action_url && selected.action_label"
+						type="colored"
+						color="brand"
+						@click="openLink(selected.action_url)"
+						>{{ selected.action_label }}</Button
+					>
+				</div>
+			</section>
+			<div
+				v-else
+				class="flex flex-1 items-center justify-center text-sm text-[var(--color-text-tertiary)]"
+			>
+				{{ formatMessage(messages.empty) }}
+			</div>
+		</div>
+		<template #actions>
+			<div class="flex flex-wrap justify-end gap-2">
+				<Button @click="modal?.hide()">{{ formatMessage(commonMessages.closeButton) }} </Button>
+			</div>
+		</template>
+	</NewModal>
+</template>

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

@@ -36,24 +36,29 @@ const fullscreenSetting: Ref<boolean> = ref(
 	instance.value.force_fullscreen ?? globalSettings.force_fullscreen,
 )
 const maximizeWindowSetting = ref(instance.value.maximize_window ?? globalSettings.maximize_window)
+const windowTitle = ref(instance.value.window_title ?? '')
 
 const editInstanceObject = computed(() => {
+	const title = windowTitle.value.trim() ? windowTitle.value.trim() : null
 	if (!overrideWindowSettings.value) {
 		return {
 			force_fullscreen: null,
 			maximize_window: null,
 			game_resolution: null,
+			// The title is independent of the window-size override checkbox.
+			window_title: title,
 		}
 	}
 	return {
 		force_fullscreen: fullscreenSetting.value,
 		maximize_window: maximizeWindowSetting.value,
 		game_resolution: fullscreenSetting.value ? null : resolution.value,
+		window_title: title,
 	}
 })
 
 watch(
-	[overrideWindowSettings, resolution, fullscreenSetting, maximizeWindowSetting],
+	[overrideWindowSettings, resolution, fullscreenSetting, maximizeWindowSetting, windowTitle],
 	async () => {
 		await edit(instance.value.id, editInstanceObject.value)
 	},
@@ -109,6 +114,18 @@ const messages = defineMessages({
 		id: 'instance.settings.tabs.window.height.enter',
 		defaultMessage: 'Enter height...',
 	},
+	windowTitle: {
+		id: 'instance.settings.tabs.window.window-title',
+		defaultMessage: 'Window title',
+	},
+	windowTitleDescription: {
+		id: 'instance.settings.tabs.window.window-title.description',
+		defaultMessage: 'Customize the Minecraft window title. Leave empty to keep the default.',
+	},
+	enterWindowTitle: {
+		id: 'instance.settings.tabs.window.window-title.enter',
+		defaultMessage: 'Enter window title...',
+	},
 })
 </script>
 
@@ -200,5 +217,25 @@ const messages = defineMessages({
 				:placeholder="formatMessage(messages.enterHeight)"
 			/>
 		</div>
+		<div
+			v-if="globalSettings.custom_window_title_enabled"
+			class="flex items-center gap-4 justify-between"
+		>
+			<div class="flex flex-col gap-1">
+				<h2 class="m-0 inline-flex items-center gap-2 text-lg font-semibold text-contrast">
+					{{ formatMessage(messages.windowTitle) }}
+				</h2>
+				<p class="m-0">
+					{{ formatMessage(messages.windowTitleDescription) }}
+				</p>
+			</div>
+			<StyledInput
+				id="window-title"
+				v-model="windowTitle"
+				autocomplete="off"
+				type="text"
+				:placeholder="formatMessage(messages.enterWindowTitle)"
+			/>
+		</div>
 	</div>
 </template>

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

@@ -38,6 +38,26 @@ const messages = defineMessages({
 		id: 'app.settings.defaults.maximize-window.unsupported',
 		defaultMessage: 'Not supported on this operating system.',
 	},
+	windowTitleEnabled: {
+		id: 'app.settings.defaults.window-title.enabled',
+		defaultMessage: 'Custom Minecraft window title',
+	},
+	windowTitleEnabledDescription: {
+		id: 'app.settings.defaults.window-title.enabled-description',
+		defaultMessage: 'Allow instances to customize the Minecraft window title.',
+	},
+	defaultWindowTitle: {
+		id: 'app.settings.defaults.window-title.default',
+		defaultMessage: 'Default window title',
+	},
+	defaultWindowTitleDescription: {
+		id: 'app.settings.defaults.window-title.default-description',
+		defaultMessage: 'Used when an instance leaves its window title empty.',
+	},
+	defaultWindowTitlePlaceholder: {
+		id: 'app.settings.defaults.window-title.default-placeholder',
+		defaultMessage: 'Enter default window title...',
+	},
 	width: { id: 'app.settings.defaults.width', defaultMessage: 'Width' },
 	widthDescription: {
 		id: 'app.settings.defaults.width-description',
@@ -212,6 +232,36 @@ watch(
 					/>
 				</template>
 			</SettingsRow>
+			<SettingsRow>
+				<template #label>
+					<span id="settings-target-defaults-window-title" tabindex="-1">
+						{{ formatMessage(messages.windowTitleEnabled) }}
+					</span>
+				</template>
+				<template #description>{{
+					formatMessage(messages.windowTitleEnabledDescription)
+				}}</template>
+				<template #control>
+					<Toggle id="custom-window-title-enabled" v-model="settings.custom_window_title_enabled" />
+				</template>
+			</SettingsRow>
+			<SettingsRow stacked>
+				<template #label>{{ formatMessage(messages.defaultWindowTitle) }}</template>
+				<template #description>{{
+					formatMessage(messages.defaultWindowTitleDescription)
+				}}</template>
+				<template #control>
+					<StyledInput
+						id="default-window-title"
+						v-model="settings.default_window_title"
+						:disabled="!settings.custom_window_title_enabled"
+						autocomplete="off"
+						type="text"
+						:placeholder="formatMessage(messages.defaultWindowTitlePlaceholder)"
+						wrapper-class="w-full"
+					/>
+				</template>
+			</SettingsRow>
 		</SettingsSection>
 
 		<SettingsSection>

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

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

apps/app-frontend/src/components/ui/skin/ArmorTrimTab.vue

@@ -0,0 +1,123 @@
+<script setup lang="ts">
+import { CheckIcon, RotateCounterClockwiseIcon, XIcon } from '@modrinth/assets'
+import {
+	type ArmorPreviewConfig,
+	ArmorTrimPanel,
+	Button,
+	defineMessages,
+	useVIntl,
+} from '@modrinth/ui'
+import { computed, onMounted, onUnmounted } from 'vue'
+
+const messages = defineMessages({
+	title: { id: 'app.skins.armor.title', defaultMessage: 'Armour and trims' },
+	description: {
+		id: 'app.skins.armor.description',
+		defaultMessage: 'Try armour and trims on your skin. Nothing is stored until you save it.',
+	},
+	unsaved: { id: 'app.skins.armor.unsaved', defaultMessage: 'Unsaved changes' },
+	resetToSaved: { id: 'app.skins.armor.reset-to-saved', defaultMessage: 'Reset to saved' },
+	restoreDefaults: {
+		id: 'app.skins.armor.restore-defaults',
+		defaultMessage: 'Restore defaults',
+	},
+	save: { id: 'app.skins.armor.save', defaultMessage: 'Save' },
+	close: { id: 'app.skins.armor.close', defaultMessage: 'Close' },
+})
+
+const draft = defineModel<ArmorPreviewConfig>({ required: true })
+const props = defineProps<{
+	saved: ArmorPreviewConfig
+	/** Stable id shared with the toggle so it can point `aria-controls` here. */
+	panelId: string
+}>()
+const emit = defineEmits<{
+	save: []
+	reset: []
+	defaults: []
+	close: []
+}>()
+
+const { formatMessage } = useVIntl()
+
+/**
+ * The tab is mounted only while it is showing, so this listens exactly for that
+ * window. It listens in the capture phase because the app's own global
+ * shortcuts listen on `window` the same way, and a bubble-phase listener here
+ * would be skipped as soon as anything closer stopped the event. A modal on top
+ * of the page owns Escape while it is up, and focus sits inside it, so the key
+ * is left to it.
+ */
+function handleKeydown(event: KeyboardEvent) {
+	if (event.key !== 'Escape') return
+	if (
+		event.target instanceof Element &&
+		event.target.closest('[role="dialog"], [role="alertdialog"], [aria-modal="true"]')
+	) {
+		return
+	}
+
+	emit('close')
+}
+
+onMounted(() => window.addEventListener('keydown', handleKeydown, true))
+onUnmounted(() => window.removeEventListener('keydown', handleKeydown, true))
+
+const isDirty = computed(() =>
+	Object.entries(draft.value).some(([slot, piece]) => {
+		const applied = props.saved[slot as keyof ArmorPreviewConfig]
+		return (
+			!applied ||
+			applied.material !== piece.material ||
+			applied.trimPattern !== piece.trimPattern ||
+			applied.trimMaterial !== piece.trimMaterial
+		)
+	}),
+)
+</script>
+
+<template>
+	<div
+		:id="panelId"
+		role="region"
+		:aria-label="formatMessage(messages.title)"
+		class="flex min-h-[24rem] flex-col gap-4 rounded-2xl border border-solid border-surface-5 bg-surface-2 p-4"
+	>
+		<header class="flex flex-wrap items-start justify-between gap-3">
+			<div class="min-w-0">
+				<h2 class="m-0 text-lg font-bold text-[var(--color-text-primary)]">
+					{{ formatMessage(messages.title) }}
+				</h2>
+				<p class="m-0 mt-1 text-sm leading-6 text-[var(--color-text-tertiary)]">
+					{{ formatMessage(messages.description) }}
+				</p>
+			</div>
+			<div class="flex shrink-0 flex-wrap items-center gap-2">
+				<span v-if="isDirty" class="text-sm font-semibold text-[var(--color-text-tertiary)]">
+					{{ formatMessage(messages.unsaved) }}
+				</span>
+				<Button type="outlined" @click="emit('close')"
+					><XIcon />{{ formatMessage(messages.close) }}</Button
+				>
+			</div>
+		</header>
+
+		<ArmorTrimPanel v-model="draft" />
+
+		<footer
+			class="mt-auto flex flex-wrap items-center justify-between gap-2 border-0 border-t border-solid border-surface-5 pt-3"
+		>
+			<div class="flex flex-wrap items-center gap-2">
+				<Button type="outlined" :disabled="!isDirty" @click="emit('reset')"
+					><RotateCounterClockwiseIcon />{{ formatMessage(messages.resetToSaved) }}</Button
+				>
+				<Button type="outlined" @click="emit('defaults')">{{
+					formatMessage(messages.restoreDefaults)
+				}}</Button>
+			</div>
+			<Button type="colored" color="brand" :disabled="!isDirty" @click="emit('save')"
+				><CheckIcon />{{ formatMessage(messages.save) }}</Button
+			>
+		</footer>
+	</div>
+</template>

apps/app-frontend/src/components/ui/skin/SkinListSkeleton.vue

@@ -0,0 +1,28 @@
+<script setup lang="ts">
+const { sections = 2, cards = 12 } = defineProps<{
+	sections?: number
+	cards?: number
+}>()
+</script>
+
+<template>
+	<!--
+		Shaped after VirtualSkinSectionList: the same grid breakpoints and card
+		ratio, so the swap to real content does not move anything. Decorative, so
+		it stays out of the accessibility tree.
+	-->
+	<div class="flex flex-col gap-8" aria-hidden="true">
+		<div v-for="section in sections" :key="section" class="flex flex-col gap-4">
+			<div class="h-7 w-44 animate-pulse rounded-lg bg-surface-4" />
+			<div
+				class="grid w-full grid-cols-3 gap-3 min-[1300px]:grid-cols-4 min-[1750px]:grid-cols-5 min-[2050px]:grid-cols-6"
+			>
+				<div
+					v-for="card in cards"
+					:key="card"
+					class="aspect-[31/40] w-full animate-pulse rounded-[20px] bg-surface-4"
+				/>
+			</div>
+		</div>
+	</div>
+</template>

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

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

apps/app-frontend/src/helpers/remote-announcements.ts

@@ -64,3 +64,6 @@ export function isAnnouncementActive(item: RemoteAnnouncement, now = Date.now())
 export function announcementKey(item: RemoteAnnouncement) {
 	return item.id + ':' + item.published_at
 }
+
+export const REMOTE_ANNOUNCEMENTS_UPDATED_EVENT = 'starlight:remote-announcements-updated'
+export const OPEN_REMOTE_ANNOUNCEMENT_CENTER_EVENT = 'starlight:open-remote-announcement-center'

apps/app-frontend/src/helpers/skin-armor-preview.test.ts

@@ -0,0 +1,60 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+
+import { loadSkinArmorPreview, saveSkinArmorPreview } from './skin-armor-preview.ts'
+
+const originalStorage = Object.getOwnPropertyDescriptor(globalThis, 'localStorage')
+
+function withStorage(run: (values: Map<string, string>) => void): void {
+	const values = new Map<string, string>()
+	Object.defineProperty(globalThis, 'localStorage', {
+		configurable: true,
+		value: {
+			getItem: (key: string) => values.get(key) ?? null,
+			setItem: (key: string, value: string) => values.set(key, value),
+		},
+	})
+	try {
+		run(values)
+	} finally {
+		if (originalStorage) Object.defineProperty(globalThis, 'localStorage', originalStorage)
+		else delete (globalThis as { localStorage?: Storage }).localStorage
+	}
+}
+
+test('armor preview selections survive storage round trips', () => {
+	withStorage(() => {
+		const config = loadSkinArmorPreview()
+		config.helmet.material = 'diamond'
+		config.helmet.trimPattern = 'sentry'
+		config.helmet.trimMaterial = 'gold'
+		saveSkinArmorPreview(config)
+
+		assert.deepEqual(loadSkinArmorPreview(), config)
+	})
+})
+
+test('invalid stored armor values fall back per slot and field', () => {
+	withStorage((values) => {
+		values.set(
+			'axolotl:skin-armor-preview',
+			JSON.stringify({
+				helmet: { material: 'diamond', trimPattern: 'invalid', trimMaterial: 'gold' },
+				boots: { material: 'turtle', trimPattern: 'sentry', trimMaterial: 'invalid' },
+			}),
+		)
+
+		const config = loadSkinArmorPreview()
+		assert.deepEqual(config.helmet, {
+			material: 'diamond',
+			trimPattern: null,
+			trimMaterial: 'gold',
+		})
+		assert.deepEqual(config.boots, {
+			material: null,
+			trimPattern: 'sentry',
+			trimMaterial: 'iron',
+		})
+		assert.equal(config.chestplate.material, null)
+	})
+})

apps/app-frontend/src/helpers/skin-armor-preview.ts

@@ -0,0 +1,47 @@
+import {
+	ARMOR_SLOTS,
+	ARMOR_TRIM_MATERIALS,
+	ARMOR_TRIM_PATTERNS,
+	armorMaterialsForSlot,
+	type ArmorPreviewConfig,
+	createDefaultArmorPreviewConfig,
+} from '@modrinth/ui'
+
+const STORAGE_KEY = 'axolotl:skin-armor-preview'
+
+function includes<T extends string>(values: readonly T[], value: unknown): value is T {
+	return typeof value === 'string' && values.some((item) => item === value)
+}
+
+export function loadSkinArmorPreview(): ArmorPreviewConfig {
+	const config = createDefaultArmorPreviewConfig()
+	try {
+		const saved = JSON.parse(globalThis.localStorage?.getItem(STORAGE_KEY) ?? 'null')
+		if (!saved || typeof saved !== 'object' || Array.isArray(saved)) return config
+
+		for (const slot of ARMOR_SLOTS) {
+			const piece = saved[slot]
+			if (!piece || typeof piece !== 'object' || Array.isArray(piece)) continue
+			if (piece.material === null || includes(armorMaterialsForSlot(slot), piece.material)) {
+				config[slot].material = piece.material
+			}
+			if (piece.trimPattern === null || includes(ARMOR_TRIM_PATTERNS, piece.trimPattern)) {
+				config[slot].trimPattern = piece.trimPattern
+			}
+			if (includes(ARMOR_TRIM_MATERIALS, piece.trimMaterial)) {
+				config[slot].trimMaterial = piece.trimMaterial
+			}
+		}
+	} catch {
+		// Invalid or unavailable local storage falls back to a fresh preview.
+	}
+	return config
+}
+
+export function saveSkinArmorPreview(config: ArmorPreviewConfig): void {
+	try {
+		globalThis.localStorage?.setItem(STORAGE_KEY, JSON.stringify(config))
+	} catch {
+		// The preview remains usable when local storage is unavailable.
+	}
+}

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

@@ -55,6 +55,7 @@ export type GameInstance = {
 	force_fullscreen?: boolean
 	maximize_window?: boolean
 	game_resolution?: [number, number]
+	window_title?: string | null
 	launch_preparation_timeout?: number | null
 	hooks: Hooks
 }
@@ -239,6 +240,8 @@ type AppSettings = {
 	force_fullscreen: boolean
 	maximize_window: boolean
 	game_resolution: [number, number]
+	custom_window_title_enabled: boolean
+	default_window_title: string
 	hide_on_process_start: boolean
 	enter_lightweight_mode_on_game_launch: boolean
 	auto_set_java_high_performance_mode: boolean

apps/app-frontend/src/locales/en-US/index.json

@@ -11428,5 +11428,62 @@
   },
   "app.settings.synced-options.game-settings.value-unset": {
     "message": "Choose a value"
+  },
+  "app.anniversary.banner": {
+    "message": "Happy {ordinal} Anniversary, Starlight!"
+  },
+  "instance.settings.tabs.window.window-title": {
+    "message": "Window title"
+  },
+  "instance.settings.tabs.window.window-title.description": {
+    "message": "Customize the Minecraft window title. Leave empty to keep the default."
+  },
+  "instance.settings.tabs.window.window-title.enter": {
+    "message": "Enter window title..."
+  },
+  "app.settings.defaults.window-title.enabled": {
+    "message": "Custom Minecraft window title"
+  },
+  "app.settings.defaults.window-title.enabled-description": {
+    "message": "Allow instances to customize the Minecraft window title."
+  },
+  "app.settings.defaults.window-title.default": {
+    "message": "Default window title"
+  },
+  "app.settings.defaults.window-title.default-description": {
+    "message": "Used when an instance does not provide its own title."
+  },
+  "app.settings.defaults.window-title.default-placeholder": {
+    "message": "Enter the default window title..."
+  },
+  "app.action-bar.announcements": {
+    "message": "Announcements"
+  },
+  "app.remote-announcements.center-title": {
+    "message": "Announcements"
+  },
+  "app.remote-announcements.empty": {
+    "message": "No announcements"
+  },
+  "app.remote-announcements.view": {
+    "message": "View announcement"
+  },
+  "app.remote-announcements.unread": {
+    "message": "Unread"
+  },
+  "app.remote-announcements.read-all": {
+    "message": "Mark all announcements as read"
+  },
+  "app.remote-announcements.preview-title": {
+    "message": "Announcement style preview"
+  },
+  "app.remote-announcements.preview-summary": {
+    "message": "This is a local preview notification. Select View announcement to see the full Markdown content."
+  },
+  "app.remote-announcements.preview-content": {
+    "message": "## Announcement preview\n\nThis is **sample content**, not a published announcement.\n\n- Supports headings, lists, and links\n- Close buttons are always available\n\n> Previewing does not change real announcement read status.\n\n| Type | Display |\n| --- | --- |\n| Modal | Full Markdown content |\n| Popup | Summary, then full content |\n\n[Visit the website](https://skin.starlight.cool/)"
+  },
+  "app.remote-announcements.preview-action": {
+    "message": "Visit website"
   }
 }

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

@@ -11350,5 +11350,17 @@
 	"app.settings.synced-options.game-settings.value-mixed": { "message": "各实例不同" },
 	"app.settings.synced-options.game-settings.value-off": { "message": "关闭" },
 	"app.settings.synced-options.game-settings.value-on": { "message": "开启" },
-	"app.settings.synced-options.game-settings.value-unset": { "message": "选择一个值" }
+	"app.settings.synced-options.game-settings.value-unset": { "message": "选择一个值" },
+	"app.anniversary.banner": { "message": "Starlight {ordinal} 周年快乐！" },
+	"instance.settings.tabs.window.window-title": { "message": "窗口标题" },
+	"instance.settings.tabs.window.window-title.description": { "message": "自定义 Minecraft 窗口标题。留空则使用默认标题。" },
+	"instance.settings.tabs.window.window-title.enter": { "message": "输入窗口标题..." },
+	"app.settings.defaults.window-title.enabled": { "message": "自定义 Minecraft 窗口标题" },
+	"app.settings.defaults.window-title.enabled-description": { "message": "允许实例自定义 Minecraft 窗口标题。" },
+	"app.settings.defaults.window-title.default": { "message": "默认窗口标题" },
+	"app.settings.defaults.window-title.default-description": { "message": "当实例未提供自己的标题时使用。" },
+	"app.settings.defaults.window-title.default-placeholder": { "message": "输入默认窗口标题..." },
+	"app.action-bar.announcements": { "message": "公告" },
+	"app.remote-announcements.center-title": { "message": "公告" },
+	"app.remote-announcements.empty": { "message": "暂无公告" }
 }

apps/app-frontend/src/pages/Skins.vue

@@ -9,9 +9,13 @@ import {
 	SpinnerIcon,
 } from '@modrinth/assets'
 import {
+	type ArmorPreviewConfig,
+	ArmorPreviewControls,
 	ButtonStyled,
+	cloneArmorPreviewConfig,
 	commonMessages,
 	ConfirmModal,
+	createDefaultArmorPreviewConfig,
 	defineMessages,
 	injectNotificationManager,
 	NavTabs,
@@ -24,12 +28,14 @@ import { invoke } from '@tauri-apps/api/core'
 import type { DragDropEvent } from '@tauri-apps/api/webview'
 import { getCurrentWebview } from '@tauri-apps/api/webview'
 import { computedAsync } from '@vueuse/core'
-import type { Ref } from 'vue'
+import type { ComponentPublicInstance, Ref } from 'vue'
 import { computed, inject, onMounted, onUnmounted, ref, useTemplateRef, watch } from 'vue'
 import { onBeforeRouteLeave, useRouter } from 'vue-router'
 
 import type AccountsCard from '@/components/ui/AccountsCard.vue'
+import ArmorTrimTab from '@/components/ui/skin/ArmorTrimTab.vue'
 import EditSkinModal from '@/components/ui/skin/EditSkinModal.vue'
+import SkinListSkeleton from '@/components/ui/skin/SkinListSkeleton.vue'
 import VirtualSkinSectionList from '@/components/ui/skin/VirtualSkinSectionList.vue'
 import {
 	openSkinSiteLogin,
@@ -45,6 +51,7 @@ import { useNetworkStatus } from '@/composables/useNetworkStatus'
 import { check_reachable, get_default_user, users } from '@/helpers/auth'
 import type { RenderResult } from '@/helpers/rendering/batch-skin-renderer.ts'
 import { skinBlobUrlMap } from '@/helpers/rendering/batch-skin-renderer.ts'
+import { loadSkinArmorPreview, saveSkinArmorPreview } from '@/helpers/skin-armor-preview'
 import type { Cape, Skin, SkinTextureUrl } from '@/helpers/skins.ts'
 import {
 	determineModelType,
@@ -252,6 +259,8 @@ const editSkinModal = useTemplateRef('editSkinModal')
 const addSkinFileInput = useTemplateRef<HTMLInputElement>('addSkinFileInput')
 const skinSectionList = useTemplateRef<VirtualSkinSectionListExpose>('skinSectionList')
 const skinPreviewArea = useTemplateRef<HTMLElement>('skinPreviewArea')
+const armorTrimTab = useTemplateRef<ComponentPublicInstance>('armorTrimTab')
+const armorPreviewControls = useTemplateRef<ComponentPublicInstance>('armorPreviewControls')
 
 const { formatMessage } = useVIntl()
 const router = useRouter()
@@ -391,7 +400,8 @@ const isAddSkinButtonDragActive = ref(false)
 
 const deleteSkinModal = ref()
 const skinToDelete = ref<Skin | null>(null)
-const skinListTab = ref<'saved' | 'default'>('saved')
+const lastSkinListTab = ref<'saved' | 'default'>('saved')
+const skinListTab = ref<'saved' | 'default' | 'armor'>('saved')
 
 const skinListTabLinks = computed(() => [
 	{
@@ -403,6 +413,70 @@ const skinListTabLinks = computed(() => [
 		label: formatMessage(messages.defaultTab),
 	},
 ])
+const ARMOR_TRIM_PANEL_ID = 'skins-armor-trim-panel'
+const savedArmorPreview = ref<ArmorPreviewConfig>(loadSkinArmorPreview())
+const armorPreviewConfig = ref<ArmorPreviewConfig>(cloneArmorPreviewConfig(savedArmorPreview.value))
+
+function saveArmorPreview() {
+	savedArmorPreview.value = cloneArmorPreviewConfig(armorPreviewConfig.value)
+	saveSkinArmorPreview(savedArmorPreview.value)
+}
+
+function resetArmorPreviewToSaved() {
+	armorPreviewConfig.value = cloneArmorPreviewConfig(savedArmorPreview.value)
+}
+
+function restoreDefaultArmorPreview() {
+	armorPreviewConfig.value = createDefaultArmorPreviewConfig()
+}
+
+/** A third tab behind the two list tabs, opened from the preview's action row. */
+function openArmorTab() {
+	if (skinListTab.value !== 'armor') lastSkinListTab.value = skinListTab.value
+
+	skinListTab.value = 'armor'
+}
+
+/**
+ * Whether an element belongs to the armour surface: somewhere inside the open
+ * armour tab or the button that toggles it. Only those hold a focus ring that
+ * would be left behind when the tab closes.
+ */
+function isArmorPreviewElement(element: Element) {
+	const tabElement: unknown = armorTrimTab.value?.$el
+	const toggleElement: unknown = armorPreviewControls.value?.$el
+
+	return (
+		(tabElement instanceof Element && tabElement.contains(element)) ||
+		(toggleElement instanceof Element && toggleElement.contains(element))
+	)
+}
+
+function closeArmorTab() {
+	// Leaving the tab drops whatever was not saved on purpose.
+	resetArmorPreviewToSaved()
+	skinListTab.value = lastSkinListTab.value
+
+	// Escape and the toggle both leave the armour button holding focus, which
+	// keeps its focus ring drawn until something else is clicked. Only drop that
+	// ring when the focus sits on the armour surface, never on an unrelated
+	// control that happened to hold it when Escape was pressed.
+	const focused = document.activeElement
+	if (focused instanceof HTMLElement && isArmorPreviewElement(focused)) focused.blur()
+}
+
+/**
+ * The tab bar keeps the last list tab highlighted while the armour tab shows, so
+ * picking one of them leaves the armour tab. That transition has to drop the
+ * draft exactly like the toggle and Escape paths do, or it lingers on the model
+ * while the panel is gone.
+ */
+function selectSkinListTab(index: number) {
+	if (skinListTab.value === 'armor') resetArmorPreviewToSaved()
+
+	lastSkinListTab.value = index === 0 ? 'saved' : 'default'
+	skinListTab.value = lastSkinListTab.value
+}
 
 function confirmDeleteSkin(skin: Skin) {
 	if (isSkinManagementReadOnly.value) return
@@ -1211,6 +1285,9 @@ await loadSkins()
 				class="ml-5 mt-4 flex h-[calc(80vh-1rem)] items-center justify-center max-[700px]:h-[calc(50vh-1rem)]"
 			>
 				<SkinPreviewRenderer
+					v-model:armor-config="armorPreviewConfig"
+					armor-preview
+					:armor-controls="false"
 					:cape-src="capeTexture"
 					:texture-src="skinTexture || ''"
 					:variant="skinVariant"
@@ -1257,6 +1334,16 @@ await loadSkins()
 							<EditIcon />
 							{{ formatMessage(messages.editSkinButton) }}
 						</button>
+						<ArmorPreviewControls
+							v-if="!isSkinSiteProfile"
+							ref="armorPreviewControls"
+							v-model="armorPreviewConfig"
+							panel="external"
+							:panel-id="ARMOR_TRIM_PANEL_ID"
+							:open="skinListTab === 'armor'"
+							@open="openArmorTab"
+							@close="closeArmorTab"
+						/>
 					</template>
 				</SkinPreviewRenderer>
 			</div>
@@ -1265,14 +1352,10 @@ await loadSkins()
 		<div class="pt-2">
 			<div class="mb-4 flex flex-wrap items-center justify-between gap-3">
 				<NavTabs
-					:active-index="skinListTab === 'saved' ? 0 : 1"
+					:active-index="lastSkinListTab === 'saved' ? 0 : 1"
 					:links="skinListTabLinks"
 					mode="local"
-					@tab-click="
-						(index: number) => {
-							skinListTab = index === 0 ? 'saved' : 'default'
-						}
-					"
+					@tab-click="selectSkinListTab"
 				/>
 				<ButtonStyled v-if="!isSkinSiteProfile" color="brand">
 					<button @click="router.push('/lab/skin-editor')">
@@ -1281,27 +1364,45 @@ await loadSkins()
 					</button>
 				</ButtonStyled>
 			</div>
-			<VirtualSkinSectionList
-				ref="skinSectionList"
-				:active-tab="skinListTab"
-				:saved-skins="savedSkins"
-				:default-skin-sections="defaultSkinSections"
-				:get-baked-skin-textures="getBakedSkinTextures"
-				:is-skin-selected="isSkinSelected"
-				:is-skin-active="isSkinActive"
-				:is-add-skin-button-drag-active="isAddSkinButtonDragActive"
-				:read-only="isSkinManagementReadOnly"
-				:manage-saved-skins="!isSkinSiteProfile"
-				@select="changeSkin"
-				@edit="(skin, event) => !isSkinSiteProfile && editSkinModal?.show(event, skin)"
-				@delete="confirmDeleteSkin"
-				@reorder-saved-skins="reorderSavedSkins"
-				@add-skin="openAddSkinFileBrowser"
-				@add-skin-dragenter="onAddSkinDragOver"
-				@add-skin-dragover="onAddSkinDragOver"
-				@add-skin-dragleave="onAddSkinDragLeave"
-				@add-skin-drop="onAddSkinDrop"
-			/>
+			<Transition name="armor-tab" mode="out-in">
+				<div v-if="skinListTab !== 'armor'" key="list">
+					<SkinListSkeleton v-if="isSkinListBuffering" />
+					<VirtualSkinSectionList
+						v-show="!isSkinListBuffering"
+						ref="skinSectionList"
+						:active-tab="skinListTab"
+						:saved-skins="savedSkins"
+						:default-skin-sections="defaultSkinSections"
+						:get-baked-skin-textures="getBakedSkinTextures"
+						:is-skin-selected="isSkinSelected"
+						:is-skin-active="isSkinActive"
+						:is-add-skin-button-drag-active="isAddSkinButtonDragActive"
+						:read-only="isSkinManagementReadOnly"
+						:manage-saved-skins="!isSkinSiteProfile"
+						@select="changeSkin"
+						@edit="(skin, event) => !isSkinSiteProfile && editSkinModal?.show(event, skin)"
+						@delete="confirmDeleteSkin"
+						@reorder-saved-skins="reorderSavedSkins"
+						@add-skin="openAddSkinFileBrowser"
+						@add-skin-dragenter="onAddSkinDragOver"
+						@add-skin-dragover="onAddSkinDragOver"
+						@add-skin-dragleave="onAddSkinDragLeave"
+						@add-skin-drop="onAddSkinDrop"
+					/>
+				</div>
+				<ArmorTrimTab
+					v-else
+					ref="armorTrimTab"
+					key="armor"
+					v-model="armorPreviewConfig"
+					:panel-id="ARMOR_TRIM_PANEL_ID"
+					:saved="savedArmorPreview"
+					@save="saveArmorPreview"
+					@reset="resetArmorPreviewToSaved"
+					@defaults="restoreDefaultArmorPreview"
+					@close="closeArmorTab"
+				/>
+			</Transition>
 		</div>
 	</div>
 
@@ -1382,4 +1483,17 @@ await loadSkins()
 		grid-template-columns: 1fr;
 	}
 }
+// The armour tab crossfades with the skin list it replaces.
+.armor-tab-enter-active,
+.armor-tab-leave-active {
+	transition:
+		opacity 180ms ease,
+		transform 180ms ease;
+}
+
+.armor-tab-enter-from,
+.armor-tab-leave-to {
+	opacity: 0;
+	transform: translateY(0.5rem);
+}
 </style>

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

@@ -25,6 +25,7 @@ export const DEFAULT_FEATURE_FLAGS = {
 	page_transitions: true,
 	advanced_filters_collapsed: true,
 	auto_install_dependencies: true,
+	force_anniversary_celebration: false,
 }
 
 export const THEME_OPTIONS = ['dark', 'light', 'oled', 'system'] as const

apps/app/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "theseus_gui"
 # The actual version is set by the theseus-build workflow on tagging
-version = "1.0.0-beta15"
+version = "1.0.2-beta4"
 edition.workspace = true
 description = "Axolotl Launcher is a cross-platform Minecraft launcher"
 homepage = "https://www.ghs.red"

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

@@ -333,6 +333,12 @@ pub struct EditInstance {
     )]
     pub launch_preparation_timeout: Option<Option<u64>>,
     pub hooks: Option<Hooks>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
+    pub window_title: Option<Option<String>>,
 
     #[serde(
         default,
@@ -531,7 +537,8 @@ fn edit_to_core(edit_instance: EditInstance) -> Result<CoreEditInstance> {
                 || edit_instance.maximize_window.is_some()
                 || edit_instance.game_resolution.is_some()
                 || edit_instance.launch_preparation_timeout.is_some()
-                || edit_instance.hooks.is_some();
+                || edit_instance.hooks.is_some()
+                || edit_instance.window_title.is_some();
             if has_launch_change {
                 Some(InstanceLaunchOverridesPatch {
                     player: None,
@@ -546,6 +553,7 @@ fn edit_to_core(edit_instance: EditInstance) -> Result<CoreEditInstance> {
                     launch_preparation_timeout: edit_instance
                         .launch_preparation_timeout,
                     hooks: edit_instance.hooks,
+                    window_title: edit_instance.window_title,
                 })
             } else {
                 None

apps/app/src/lightweight_mode.rs

@@ -253,6 +253,14 @@ impl LightweightMode {
                     if payload.maximize_window {
                         maximize_minecraft_window(payload.pid).await;
                     }
+                    if let Some(title) = payload
+                        .window_title
+                        .as_ref()
+                        .map(|value| value.trim())
+                        .filter(|value| !value.is_empty())
+                    {
+                        rename_minecraft_window(payload.pid, title).await;
+                    }
                     let settings = match theseus::settings::get().await {
                         Ok(settings) => settings,
                         Err(error) => {
@@ -332,6 +340,8 @@ struct ProcessEventPayload {
     pid: u32,
     #[serde(default)]
     maximize_window: bool,
+    #[serde(default)]
+    window_title: Option<String>,
     event: String,
     crashed: Option<bool>,
     #[serde(default)]
@@ -339,7 +349,7 @@ struct ProcessEventPayload {
 }
 
 #[cfg(target_os = "windows")]
-use std::sync::atomic::{AtomicBool, AtomicU32, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicIsize, AtomicU32, Ordering};
 
 #[cfg(target_os = "windows")]
 static MAXIMIZE_PROCESS_ID: AtomicU32 = AtomicU32::new(0);
@@ -400,6 +410,74 @@ async fn maximize_minecraft_window(pid: u32) {
 
 #[cfg(not(target_os = "windows"))]
 async fn maximize_minecraft_window(_pid: u32) {}
+#[cfg(target_os = "windows")]
+static RENAME_WINDOW_HANDLE: AtomicIsize = AtomicIsize::new(0);
+
+#[cfg(target_os = "windows")]
+unsafe extern "system" fn rename_if_owned_by_process(
+    hwnd: windows::Win32::Foundation::HWND,
+    _: windows::Win32::Foundation::LPARAM,
+) -> windows::core::BOOL {
+    use windows::Win32::UI::WindowsAndMessaging::{
+        GetWindowThreadProcessId, IsWindowVisible,
+    };
+    use windows::core::BOOL;
+
+    let mut window_pid = 0;
+    unsafe { GetWindowThreadProcessId(hwnd, Some(&mut window_pid)) };
+    if window_pid == MAXIMIZE_PROCESS_ID.load(Ordering::Relaxed)
+        && unsafe { IsWindowVisible(hwnd).as_bool() }
+    {
+        RENAME_WINDOW_HANDLE.store(hwnd.0 as isize, Ordering::Relaxed);
+        return BOOL(0);
+    }
+    BOOL(1)
+}
+
+#[cfg(target_os = "windows")]
+async fn rename_minecraft_window(pid: u32, title: &str) {
+    if pid == 0 || title.is_empty() {
+        return;
+    }
+
+    // PCL keeps re-applying the title: FML/Quilt and some mods reset it
+    // while the game boots, so a one-shot rename is not enough.
+    let deadline =
+        tokio::time::Instant::now() + std::time::Duration::from_secs(45);
+    let mut applied = false;
+    loop {
+        let found = {
+            let _guard = MAXIMIZE_WINDOW_ENUMERATION.lock();
+            MAXIMIZE_PROCESS_ID.store(pid, Ordering::Relaxed);
+            RENAME_WINDOW_HANDLE.store(0, Ordering::Relaxed);
+            unsafe {
+                use windows::Win32::Foundation::LPARAM;
+                use windows::Win32::UI::WindowsAndMessaging::EnumWindows;
+                let _ =
+                    EnumWindows(Some(rename_if_owned_by_process), LPARAM(0));
+            }
+            RENAME_WINDOW_HANDLE.load(Ordering::Relaxed)
+        };
+        if found != 0 {
+            let hwnd = windows::Win32::Foundation::HWND(found as *mut _);
+            let wide: Vec<u16> = title.encode_utf16().chain(Some(0)).collect();
+            unsafe {
+                use windows::Win32::UI::WindowsAndMessaging::SetWindowTextW;
+                let _ =
+                    SetWindowTextW(hwnd, windows::core::PCWSTR(wide.as_ptr()));
+            }
+            applied = true;
+        }
+        if tokio::time::Instant::now() >= deadline {
+            return;
+        }
+        let _ = applied;
+        tokio::time::sleep(std::time::Duration::from_millis(400)).await;
+    }
+}
+
+#[cfg(not(target_os = "windows"))]
+async fn rename_minecraft_window(_pid: u32, _title: &str) {}
 
 #[tauri::command]
 pub fn lightweight_mode_frontend_ready(

packages/app-lib/Cargo.toml

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

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

@@ -186,4 +186,32 @@ CREATE TABLE instance_server_pack_state (
 	FOREIGN KEY (instance_id) REFERENCES instances (id) ON DELETE CASCADE
 );
 
+-- Synced pack catalog tables (ported alongside the sync feature tables).
+CREATE TABLE synced_pack_catalog (
+	id TEXT PRIMARY KEY NOT NULL,
+	project_type TEXT NOT NULL CHECK (project_type IN ('resourcepack', 'datapack')),
+	file_name TEXT NOT NULL,
+	sha1 TEXT NOT NULL UNIQUE,
+	size INTEGER NOT NULL CHECK (size >= 0),
+	game_versions_json TEXT NOT NULL DEFAULT '[]',
+	enabled INTEGER NOT NULL DEFAULT 1 CHECK (enabled IN (0, 1)),
+	created_at INTEGER NOT NULL,
+	modified_at INTEGER NOT NULL
+);
+
+CREATE INDEX synced_pack_catalog_type ON synced_pack_catalog(project_type, modified_at);
+
+CREATE TABLE synced_pack_instances (
+	pack_id TEXT NOT NULL,
+	instance_id TEXT NOT NULL,
+	excluded INTEGER NOT NULL DEFAULT 0 CHECK (excluded IN (0, 1)),
+	materialized_path TEXT,
+	modified_at INTEGER NOT NULL,
+	PRIMARY KEY (pack_id, instance_id),
+	FOREIGN KEY (pack_id) REFERENCES synced_pack_catalog(id) ON DELETE CASCADE,
+	FOREIGN KEY (instance_id) REFERENCES instances(id) ON DELETE CASCADE
+);
+
+CREATE INDEX synced_pack_instances_instance ON synced_pack_instances(instance_id, excluded);
+
 ALTER TABLE settings ADD COLUMN sync_features_across_devices INTEGER NOT NULL DEFAULT FALSE;

packages/app-lib/migrations/20261004000000_custom-window-title.sql

@@ -0,0 +1,2 @@
+ALTER TABLE settings ADD COLUMN custom_window_title_enabled INTEGER NOT NULL DEFAULT FALSE;
+ALTER TABLE settings ADD COLUMN default_window_title TEXT NOT NULL DEFAULT 'Minecraft';

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

@@ -250,6 +250,17 @@ async fn run_credentials(
         .launch_overrides
         .maximize_window
         .unwrap_or(settings.maximize_window);
+    let window_title = settings
+        .custom_window_title_enabled
+        .then(|| {
+            context
+                .launch_overrides
+                .window_title
+                .clone()
+                .filter(|value| !value.trim().is_empty())
+                .unwrap_or_else(|| settings.default_window_title.clone())
+        })
+        .filter(|value| !value.trim().is_empty());
     let env_args = context
         .launch_overrides
         .custom_env_vars
@@ -319,6 +330,7 @@ async fn run_credentials(
         &memory,
         &resolution,
         maximize_window,
+        window_title,
         credentials,
         post_exit_hook,
         &context,

packages/app-lib/src/api/pack/import/axolotl.rs

@@ -157,6 +157,7 @@ pub(crate) async fn import_axolotl(
                 ),
                 maximize_window: Some(config.launch_overrides.maximize_window),
                 game_resolution: Some(config.launch_overrides.game_resolution),
+                window_title: None,
                 launch_preparation_timeout: Some(
                     config.launch_overrides.launch_preparation_timeout,
                 ),

packages/app-lib/src/event/emit.rs

@@ -400,6 +400,7 @@ pub async fn emit_process(
     uuid: Uuid,
     pid: u32,
     maximize_window: bool,
+    window_title: Option<String>,
     event: ProcessPayloadType,
     message: &str,
     crashed: Option<bool>,
@@ -416,6 +417,7 @@ pub async fn emit_process(
                     uuid,
                     pid,
                     maximize_window,
+                    window_title,
                     event,
                     message: message.to_string(),
                     crashed,

packages/app-lib/src/event/mod.rs

@@ -336,6 +336,8 @@ pub struct ProcessPayload {
     pub uuid: Uuid,
     pub pid: u32,
     pub maximize_window: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub window_title: Option<String>,
     pub event: ProcessPayloadType,
     pub message: String,
     #[serde(skip_serializing_if = "Option::is_none")]

packages/app-lib/src/launcher/download.rs

@@ -1947,9 +1947,9 @@ pub async fn download_assets(
     // failures. Runs concurrently (same budget as the original scheduler) so
     // import flows are not serialised.
     if !fallback_assets.is_empty() {
-        let limit = crate::util::download::task_concurrency_limit(st)
-            .map(|limit| limit.saturating_mul(2))
-            .unwrap_or(ASSET_BATCH_CONCURRENCY);
+        let limit =
+            crate::util::download::single_authority_task_concurrency_limit(st)
+                .unwrap_or(ASSET_BATCH_CONCURRENCY);
         futures::stream::iter(fallback_assets)
             .map(Ok::<FallbackAsset, crate::Error>)
             .try_for_each_concurrent(limit, |item| {
@@ -2123,7 +2123,7 @@ pub async fn download_libraries(
     let num_files = tasks.len();
     loading_try_for_each_concurrent(
 		stream::iter(tasks).map(Ok::<LibraryDownloadTask<'_>, crate::Error>),
-		crate::util::download::task_concurrency_limit(&st).map(|limit| limit.saturating_mul(2)),
+		crate::util::download::task_concurrency_limit(&st),
         loading_bar,
         loading_amount,
         num_files,

packages/app-lib/src/launcher/mod.rs

@@ -1,5 +1,4 @@
 //! Logic for launching Minecraft
-use crate::api::pack::import::direct_link::direct_link_group;
 use crate::data::ModLoader;
 use crate::event::emit::{emit_instance, emit_loading, init_loading};
 use crate::event::{InstancePayloadType, LoadingBarType};
@@ -717,14 +716,6 @@ async fn promote_external_instance_link(
         &mut tx,
     )
     .await?;
-    if let Some(group) = direct_link_group(&direct.dot_minecraft) {
-        crate::state::instances::adapters::sqlite::instance_rows::replace_instance_groups(
-            &instance.id,
-            &[group],
-            &mut tx,
-        )
-        .await?;
-    }
     tx.commit().await?;
     emit_instance(&instance.id, InstancePayloadType::Edited).await?;
     Ok(())
@@ -1529,6 +1520,7 @@ pub async fn launch_minecraft(
     memory: &MemorySettings,
     resolution: &WindowSize,
     maximize_window: bool,
+    window_title: Option<String>,
     credentials: &Credentials,
     post_exit_hook: Option<String>,
     context: &InstanceLaunchContext,
@@ -2400,6 +2392,7 @@ pub async fn launch_minecraft(
             command,
             post_exit_hook,
             maximize_window,
+            window_title,
             instance_path.clone(),
             logs_folder,
             version_info.logging.is_some(),

packages/app-lib/src/state/instances/commands/create_direct_link_instance.rs

@@ -1,6 +1,5 @@
 use crate::api::pack::import::{
-    ImportLauncherType,
-    direct_link::{direct_link_group, resolve_direct_link},
+    ImportLauncherType, direct_link::resolve_direct_link,
 };
 use crate::launcher::ExternalGameDirMode;
 use crate::state::instances::{
@@ -156,11 +155,6 @@ pub(crate) async fn create_direct_link_instance(
         &mut tx,
     )
     .await?;
-    let groups = direct_link_group(&resolved.dot_minecraft)
-        .into_iter()
-        .collect::<Vec<_>>();
-    instance_rows::replace_instance_groups(&instance_id, &groups, &mut tx)
-        .await?;
     instance_rows::upsert_instance_launch_overrides(&launch_overrides, &mut tx)
         .await?;
     tx.commit().await?;

packages/app-lib/src/state/instances/commands/edit_instance.rs

@@ -103,6 +103,12 @@ pub struct InstanceLaunchOverridesPatch {
         skip_serializing_if = "Option::is_none",
         with = "serde_with::rust::double_option"
     )]
+    pub window_title: Option<Option<String>>,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "serde_with::rust::double_option"
+    )]
     pub launch_preparation_timeout: Option<Option<u64>>,
     pub hooks: Option<Hooks>,
 }
@@ -371,6 +377,10 @@ fn apply_launch_overrides_patch(
     if let Some(game_resolution) = patch.game_resolution {
         overrides.game_resolution = game_resolution;
     }
+    if let Some(window_title) = patch.window_title {
+        overrides.window_title =
+            window_title.filter(|value| !value.trim().is_empty());
+    }
     if let Some(mode) = patch.instance_mode {
         overrides.instance_mode = Some(mode);
     }

packages/app-lib/src/state/instances/commands/sync_direct_link_instances.rs

@@ -1,7 +1,7 @@
 use super::create_direct_link_instance::create_direct_link_instance;
 use crate::api::pack::import::direct_link::{
-    detect_direct_link_source, direct_link_group,
-    has_minecraft_version_manifest, resolve_direct_link,
+    detect_direct_link_source, has_minecraft_version_manifest,
+    resolve_direct_link,
 };
 use crate::event::{InstancePayloadType, emit::emit_instance};
 use crate::launcher::ExternalGameDirMode;
@@ -163,11 +163,7 @@ pub(crate) async fn sync_direct_link_instances(
                 let content_changed = metadata.applied_content_set.game_version
                     != resolved.game_version
                     || metadata.applied_content_set.loader != resolved.loader;
-                let groups = direct_link_group(&resolved.dot_minecraft)
-                    .into_iter()
-                    .collect::<Vec<_>>();
-                let groups_changed = metadata.groups != groups;
-                if fields_changed || content_changed || groups_changed {
+                if fields_changed || content_changed {
                     if content_changed {
                         crate::state::edit_instance(
                             &instance.id,
@@ -216,12 +212,6 @@ pub(crate) async fn sync_direct_link_instances(
                         &mut tx,
                     )
                     .await?;
-                    instance_rows::replace_instance_groups(
-                        &instance.id,
-                        &groups,
-                        &mut tx,
-                    )
-                    .await?;
                     tx.commit().await?;
                     let _ = emit_instance(
                         &instance.id,

packages/app-lib/src/state/instances/model/launch.rs

@@ -38,6 +38,8 @@ pub struct InstanceLaunchOverrides {
     pub maximize_window: Option<bool>,
     pub game_resolution: Option<WindowSize>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub window_title: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
     pub launch_preparation_timeout: Option<u64>,
     pub hooks: Hooks,
 }
@@ -55,6 +57,7 @@ impl InstanceLaunchOverrides {
             force_fullscreen: None,
             maximize_window: None,
             game_resolution: None,
+            window_title: None,
             launch_preparation_timeout: None,
             hooks: Hooks {
                 pre_launch: None,
@@ -86,6 +89,8 @@ pub(crate) struct InstanceLaunchOverridesData {
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub game_resolution: Option<WindowSize>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub window_title: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
     pub launch_preparation_timeout: Option<u64>,
     #[serde(default)]
     pub hooks: Hooks,
@@ -107,6 +112,7 @@ impl InstanceLaunchOverridesData {
             force_fullscreen: self.force_fullscreen,
             maximize_window: self.maximize_window,
             game_resolution: self.game_resolution,
+            window_title: self.window_title,
             launch_preparation_timeout: self.launch_preparation_timeout,
             hooks: self.hooks,
         }
@@ -125,6 +131,7 @@ impl From<&InstanceLaunchOverrides> for InstanceLaunchOverridesData {
             force_fullscreen: overrides.force_fullscreen,
             maximize_window: overrides.maximize_window,
             game_resolution: overrides.game_resolution,
+            window_title: overrides.window_title.clone(),
             launch_preparation_timeout: overrides.launch_preparation_timeout,
             hooks: overrides.hooks.clone(),
         }

packages/app-lib/src/state/legacy_converter.rs

@@ -621,6 +621,7 @@ where
         force_fullscreen: input.force_fullscreen,
         maximize_window: None,
         game_resolution: input.game_resolution,
+        window_title: None,
         launch_preparation_timeout: None,
         hooks: input.hooks,
     };

packages/app-lib/src/state/mod.rs

@@ -118,6 +118,7 @@ pub struct State {
     download_sample_requests: AtomicU64,
     download_sample_errors: AtomicU64,
     download_sample_throttles: AtomicU64,
+    download_sample_queue_waits: AtomicU64,
     pub(crate) install_job_semaphore: Semaphore,
     pub(crate) install_db_semaphore: Semaphore,
     pub(crate) install_job_cancellations: DashMap<Uuid, CancellationToken>,
@@ -196,6 +197,7 @@ struct AutoConcurrencySample {
     requests: u64,
     errors: u64,
     throttles: u64,
+    queue_waits: u64,
 }
 
 /// Per-instance lock registry with task-local reentrancy.
@@ -399,6 +401,15 @@ impl AutoConcurrencyController {
         } else {
             sample.errors as f64 / sample.requests as f64
         };
+        if sample.queue_waits > 0 {
+            self.high_utilization_windows = 0;
+            self.pressure_windows = 0;
+            self.probe = None;
+            self.cooldown_until = Some(now + AUTO_DOWNLOAD_PROBE_COOLDOWN);
+            return current
+                .saturating_sub(current.div_ceil(4))
+                .max(AUTO_DOWNLOAD_CONCURRENCY_MIN);
+        }
         // A single throttled window is handled by the per-host limiter; the
         // global concurrency only backs off when pressure persists across
         // several samples, and then in small steps instead of a big cut.
@@ -677,6 +688,11 @@ impl State {
         self.download_sample_errors.fetch_add(1, Ordering::AcqRel);
     }
 
+    pub(crate) fn record_download_queue_wait(&self) {
+        self.download_sample_queue_waits
+            .fetch_add(1, Ordering::AcqRel);
+    }
+
     pub(crate) fn update_download_settings(
         self: &Arc<Self>,
         settings: &Settings,
@@ -735,6 +751,7 @@ impl State {
                 self.download_sample_requests.swap(0, Ordering::AcqRel);
                 self.download_sample_errors.swap(0, Ordering::AcqRel);
                 self.download_sample_throttles.swap(0, Ordering::AcqRel);
+                self.download_sample_queue_waits.swap(0, Ordering::AcqRel);
                 continue;
             }
             let sample = AutoConcurrencySample {
@@ -749,6 +766,9 @@ impl State {
                 throttles: self
                     .download_sample_throttles
                     .swap(0, Ordering::AcqRel),
+                queue_waits: self
+                    .download_sample_queue_waits
+                    .swap(0, Ordering::AcqRel),
             };
             let current = self.download_concurrency();
             let ceiling =
@@ -771,6 +791,7 @@ impl State {
                     requests = sample.requests,
                     errors = sample.errors,
                     throttles = sample.throttles,
+                    queue_waits = sample.queue_waits,
                     "Adjusted automatic download concurrency"
                 );
                 self.resize_download_concurrency(target);
@@ -935,6 +956,7 @@ impl State {
             download_sample_requests: AtomicU64::new(0),
             download_sample_errors: AtomicU64::new(0),
             download_sample_throttles: AtomicU64::new(0),
+            download_sample_queue_waits: AtomicU64::new(0),
             install_job_semaphore: Semaphore::new(MAX_CONCURRENT_INSTALL_JOBS),
             install_db_semaphore: Semaphore::new(1),
             install_job_cancellations: DashMap::new(),
@@ -1024,6 +1046,7 @@ pub(crate) async fn test_state(
         download_sample_requests: AtomicU64::new(0),
         download_sample_errors: AtomicU64::new(0),
         download_sample_throttles: AtomicU64::new(0),
+        download_sample_queue_waits: AtomicU64::new(0),
         install_job_semaphore: Semaphore::new(1),
         install_db_semaphore: Semaphore::new(1),
         install_job_cancellations: DashMap::new(),
@@ -1053,9 +1076,24 @@ mod auto_concurrency_tests {
             requests: 100,
             errors: 0,
             throttles: 0,
+            queue_waits: 0,
         }
     }
 
+    #[test]
+    fn queue_pressure_backs_off_immediately_and_repeatedly() {
+        let mut controller = AutoConcurrencyController::default();
+        let now = Instant::now();
+        let congested = AutoConcurrencySample {
+            queue_waits: 1,
+            ..healthy(8, 100)
+        };
+
+        assert_eq!(controller.next_target(now, 128, 128, congested), 96);
+        assert_eq!(controller.next_target(now, 96, 128, congested), 72);
+        assert_eq!(controller.next_target(now, 16, 128, congested), 16);
+    }
+
     #[test]
     fn probes_up_after_two_saturated_windows_and_respects_ceiling() {
         let mut controller = AutoConcurrencyController::default();
@@ -1130,6 +1168,7 @@ mod auto_concurrency_tests {
             requests: 100,
             errors: 5,
             throttles: 0,
+            queue_waits: 0,
         };
         assert_eq!(controller.next_target(Instant::now(), 16, 128, sample), 16);
     }

packages/app-lib/src/state/process.rs

@@ -312,6 +312,7 @@ impl ProcessManager {
         mut mc_command: Command,
         post_exit_command: Option<String>,
         maximize_window: bool,
+        window_title: Option<String>,
         game_dir: PathBuf,
         logs_folder: PathBuf,
         xml_logging: bool,
@@ -336,6 +337,7 @@ impl ProcessManager {
                 uuid: Uuid::new_v4(),
                 pid: mc_proc.id().unwrap_or_default(),
                 maximize_window,
+                window_title: window_title.clone(),
                 start_time: Utc::now(),
                 instance_id: instance_id.to_string(),
                 instance_path: instance_path.to_string(),
@@ -509,6 +511,7 @@ impl ProcessManager {
             metadata.uuid,
             metadata.pid,
             metadata.maximize_window,
+            metadata.window_title.clone(),
             ProcessPayloadType::Launched,
             "Launched Minecraft",
             None,
@@ -586,6 +589,7 @@ pub struct ProcessMetadata {
     pub uuid: Uuid,
     pub pid: u32,
     pub maximize_window: bool,
+    pub window_title: Option<String>,
     pub instance_id: String,
     pub instance_path: String,
     pub instance_name: String,
@@ -1311,6 +1315,7 @@ impl Process {
             uuid,
             pid,
             false,
+            None,
             ProcessPayloadType::Finished,
             "Exited process",
             Some(!mc_exit_status.success() && !manually_killed),
@@ -1451,6 +1456,7 @@ mod post_upgrade_tests {
                     uuid,
                     pid: child.id().unwrap(),
                     maximize_window: false,
+                    window_title: None,
                     instance_id: "first".into(),
                     instance_path: "first".into(),
                     instance_name: "First".into(),

packages/app-lib/src/state/settings.rs

@@ -176,6 +176,10 @@ pub struct Settings {
     pub force_fullscreen: bool,
     pub maximize_window: bool,
     #[serde(default)]
+    pub custom_window_title_enabled: bool,
+    #[serde(default = "default_window_title")]
+    pub default_window_title: String,
+    #[serde(default)]
     pub force_unicode_font: bool,
     pub game_resolution: WindowSize,
     pub hide_on_process_start: bool,
@@ -198,6 +202,10 @@ pub struct Settings {
     pub version: usize,
 }
 
+fn default_window_title() -> String {
+    "Minecraft".to_string()
+}
+
 fn default_true() -> bool {
     true
 }
@@ -328,6 +336,16 @@ impl Settings {
         )
         .fetch_one(exec)
         .await?;
+        let custom_window_title_enabled: bool = sqlx::query_scalar(
+            "SELECT custom_window_title_enabled FROM settings WHERE id = 0",
+        )
+        .fetch_one(exec)
+        .await?;
+        let default_window_title: String = sqlx::query_scalar(
+            "SELECT default_window_title FROM settings WHERE id = 0",
+        )
+        .fetch_one(exec)
+        .await?;
         let settings = Self {
             max_concurrent_downloads: res.max_concurrent_downloads as usize,
             max_concurrent_writes: res.max_concurrent_writes as usize,
@@ -415,6 +433,8 @@ impl Settings {
             },
             force_fullscreen: res.mc_force_fullscreen == 1,
             maximize_window: res.mc_maximize_window == 1,
+            custom_window_title_enabled,
+            default_window_title,
             force_unicode_font: sqlx::query_scalar(
                 "SELECT mc_force_unicode_font FROM settings WHERE id = 0",
             )
@@ -663,6 +683,18 @@ impl Settings {
             .bind(self.ignore_ssl_errors)
             .execute(exec)
             .await?;
+        sqlx::query(
+            "UPDATE settings SET custom_window_title_enabled = ? WHERE id = 0",
+        )
+        .bind(self.custom_window_title_enabled)
+        .execute(exec)
+        .await?;
+        sqlx::query(
+            "UPDATE settings SET default_window_title = ? WHERE id = 0",
+        )
+        .bind(self.default_window_title.trim())
+        .execute(exec)
+        .await?;
         sqlx::query("UPDATE settings SET mc_memory_optimize = ? WHERE id = 0")
             .bind(self.memory.optimize_before_launch)
             .execute(exec)

packages/app-lib/src/util/download/h2_download.rs

@@ -62,6 +62,7 @@ pub(crate) enum H2DownloadOutcome {
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub(crate) enum H2DownloadFailure {
     Ineligible(&'static str),
+    Capacity,
     Connect,
     Tls,
     Protocol,
@@ -76,6 +77,7 @@ impl H2DownloadFailure {
     pub(crate) const fn as_str(self) -> &'static str {
         match self {
             Self::Ineligible(reason) => reason,
+            Self::Capacity => "HTTP/2 connection capacity is unavailable",
             Self::Connect => "HTTP/2 TCP connection failed",
             Self::Tls => "HTTP/2 TLS connection failed",
             Self::Protocol => "HTTP/2 protocol failed",
@@ -104,6 +106,7 @@ impl H2DownloadFailure {
 pub(crate) async fn try_download_via_h2(
     request: &DownloadRequest,
     route: &DownloadRoute,
+    semaphore: &fetch::FetchSemaphore,
     destination: &Path,
     part_path: &Path,
     policy: super::native::NativeH2Policy,
@@ -122,13 +125,19 @@ pub(crate) async fn try_download_via_h2(
             preserve_partial: false,
         };
     }
-    let connection = match connect_authority(
-        route,
-        true,
-        policy.allow_cold_connection,
-    )
-    .await
+    let connection_wait =
+        connect_authority(route, true, policy.allow_cold_connection);
+    let connection_result = if let Some(cancellation) =
+        request.cancellation.as_ref()
     {
+        tokio::select! {
+            _ = cancellation.cancelled() => return H2DownloadOutcome::Canceled,
+            result = connection_wait => result,
+        }
+    } else {
+        connection_wait.await
+    };
+    let connection = match connection_result {
         Ok(connection) => connection,
         Err(failure) => {
             return H2DownloadOutcome::Fallback {
@@ -137,6 +146,30 @@ pub(crate) async fn try_download_via_h2(
             };
         }
     };
+    // The shared connection reserves native capacity when it is created.
+    // Acquire the per-download permit afterwards so every native path uses
+    // the same native-then-fetch order and cannot form a circular wait.
+    let fetch_permit_wait =
+        fetch::acquire_fetch_permit_with_pressure(semaphore);
+    let fetch_permit_result = if let Some(cancellation) =
+        request.cancellation.as_ref()
+    {
+        tokio::select! {
+            _ = cancellation.cancelled() => return H2DownloadOutcome::Canceled,
+            result = fetch_permit_wait => result,
+        }
+    } else {
+        fetch_permit_wait.await
+    };
+    let _fetch_permit = match fetch_permit_result {
+        Ok(permit) => permit,
+        Err(_) => {
+            return H2DownloadOutcome::Fallback {
+                failure: H2DownloadFailure::Connect,
+                preserve_partial: false,
+            };
+        }
+    };
     let Ok(uri) = route.url.parse::<Uri>() else {
         return H2DownloadOutcome::Fallback {
             failure: H2DownloadFailure::Http,
@@ -156,14 +189,20 @@ pub(crate) async fn try_download_via_h2(
     let total_size = if let Some(size) = expected_size {
         size
     } else {
-        let _probe_stream_permit = match tokio::time::timeout(
-            ASSET_RESOURCE_WAIT_TIMEOUT,
-            super::h2_stream_budget::acquire(route),
-        )
-        .await
+        let probe_wait = super::h2_stream_budget::acquire_with_pressure(route);
+        let probe_result = if let Some(cancellation) =
+            request.cancellation.as_ref()
         {
-            Ok(Ok(permit)) => permit,
-            Ok(Err(_)) | Err(_) => {
+            tokio::select! {
+                _ = cancellation.cancelled() => return H2DownloadOutcome::Canceled,
+                result = probe_wait => result,
+            }
+        } else {
+            probe_wait.await
+        };
+        let _probe_stream_permit = match probe_result {
+            Ok(permit) => permit,
+            Err(_) => {
                 return H2DownloadOutcome::Fallback {
                     failure: H2DownloadFailure::Connect,
                     preserve_partial: false,
@@ -239,10 +278,7 @@ pub(crate) async fn try_download_via_h2(
         crate::install::DownloadItemStatus::WaitingForResource,
     )
     .await;
-    let stream_wait = tokio::time::timeout(
-        ASSET_RESOURCE_WAIT_TIMEOUT,
-        super::h2_stream_budget::acquire(route),
-    );
+    let stream_wait = super::h2_stream_budget::acquire_with_pressure(route);
     let stream_wait_started = Instant::now();
     let stream_result = if let Some(cancellation) =
         request.cancellation.as_ref()
@@ -255,8 +291,8 @@ pub(crate) async fn try_download_via_h2(
         stream_wait.await
     };
     let _stream_permit = match stream_result {
-        Ok(Ok(permit)) => permit,
-        Ok(Err(_)) | Err(_) => {
+        Ok(permit) => permit,
+        Err(_) => {
             return H2DownloadOutcome::Fallback {
                 failure: H2DownloadFailure::Connect,
                 preserve_partial: false,
@@ -327,6 +363,7 @@ async fn connect_authority(
                 "Failed to establish shared HTTP/2 connection"
             );
             Err(match error.kind {
+                H2ConnectFailureKind::Capacity => H2DownloadFailure::Capacity,
                 H2ConnectFailureKind::Tcp => H2DownloadFailure::Connect,
                 H2ConnectFailureKind::Tls => H2DownloadFailure::Tls,
                 H2ConnectFailureKind::Protocol => H2DownloadFailure::Protocol,
@@ -771,6 +808,12 @@ mod tests {
     use super::*;
     use bytes::Bytes;
 
+    #[test]
+    fn capacity_wait_is_not_classified_as_a_transport_failure() {
+        assert!(!H2DownloadFailure::Capacity.is_transfer_failure());
+        assert!(!H2DownloadFailure::Capacity.should_cooldown_authority());
+    }
+
     #[tokio::test]
     async fn single_stream_reports_bytes_before_the_response_finishes() {
         let size = 512 * 1024;
@@ -1183,28 +1226,6 @@ async fn download_asset_item(
             "timed out waiting for asset destination lock".to_string(),
         )
     })?;
-    let fetch_permit = if apply_native_policy {
-        let Some(semaphore) = native_semaphore else {
-            return Err(crate::ErrorKind::OtherError(
-                "native asset batch is missing fetch budget".to_string(),
-            )
-            .into());
-        };
-        Some(
-            tokio::time::timeout(
-                ASSET_RESOURCE_WAIT_TIMEOUT,
-                semaphore.0.acquire(),
-            )
-            .await
-            .map_err(|_| {
-                crate::ErrorKind::NetworkError(
-                    "timed out waiting for asset fetch permit".to_string(),
-                )
-            })??,
-        )
-    } else {
-        None
-    };
     // A different downloader may have committed the object while this item
     // waited for the destination lock. Reuse it instead of opening another
     // stream, which also prevents cross-engine `.part`/rename races.
@@ -1243,24 +1264,26 @@ async fn download_asset_item(
             return Ok(AssetBatchItemOutcome::LocalObjectFailed { error });
         }
     };
-    let _stream_permit = if apply_native_policy {
-        Some(
-            tokio::time::timeout(
-                ASSET_RESOURCE_WAIT_TIMEOUT,
-                super::h2_stream_budget::acquire_asset(route),
+    // Resolve the primary or lazily expanded sibling before taking the fetch
+    // permit. Shared connections reserve native capacity, so this preserves
+    // the native-then-fetch order used by every other native path.
+    let connection = connections.connection(rescue).await;
+    let fetch_permit = if apply_native_policy {
+        let Some(semaphore) = native_semaphore else {
+            return Err(crate::ErrorKind::OtherError(
+                "native asset batch is missing fetch budget".to_string(),
             )
-            .await
-            .map_err(|_| {
-                crate::ErrorKind::NetworkError(
-                    "timed out waiting for asset HTTP/2 stream permit"
-                        .to_string(),
-                )
-            })??,
-        )
+            .into());
+        };
+        Some(fetch::acquire_fetch_permit_with_pressure(semaphore).await?)
+    } else {
+        None
+    };
+    let _stream_permit = if apply_native_policy {
+        Some(super::h2_stream_budget::acquire_asset_with_pressure(route).await?)
     } else {
         None
     };
-    let connection = connections.connection(rescue).await;
     let _connection_stream = connection.track_stream();
     let mut headers = HeaderMap::new();
     headers.insert(

packages/app-lib/src/util/download/h2_pool.rs

@@ -34,6 +34,7 @@ const CONNECTION_WAIT_TIMEOUT: Duration = Duration::from_secs(45);
 
 #[derive(Debug, Clone, Copy, Eq, PartialEq)]
 pub(crate) enum H2ConnectFailureKind {
+    Capacity,
     Tcp,
     Tls,
     Protocol,
@@ -357,9 +358,41 @@ async fn connect_tcp(host: &str, port: u16) -> std::io::Result<TcpStream> {
 }
 
 /// Connects a new shared HTTP/2 connection to `authority` (host[:port]).
-async fn establish(
+async fn reserve_physical_budget(
     route: &DownloadRoute,
     reserve_native_budget: bool,
+) -> Result<Option<super::native_budget::NativeBudgetPermit>, H2ConnectError> {
+    Ok(if reserve_native_budget {
+        Some(
+            crate::util::fetch::wait_for_download_resource(
+                super::native_budget::acquire(route),
+            )
+            .await
+            .map_err(|_| {
+                H2ConnectError::new(
+                    H2ConnectFailureKind::Capacity,
+                    "HTTP/2 connection capacity remained stalled for 5 minutes"
+                        .to_string(),
+                )
+            })?
+            .map_err(|error| {
+                H2ConnectError::new(
+                    H2ConnectFailureKind::Capacity,
+                    format!(
+                        "failed to reserve HTTP/2 connection capacity: {error}"
+                    ),
+                )
+            })?,
+        )
+    } else {
+        None
+    })
+}
+
+/// Connects a new shared HTTP/2 connection to `authority` (host[:port]).
+async fn establish(
+    route: &DownloadRoute,
+    physical_budget: Option<super::native_budget::NativeBudgetPermit>,
 ) -> Result<Arc<SharedH2Connection>, H2ConnectError> {
     let authority =
         crate::util::fetch::url_authority(&route.url).ok_or_else(|| {
@@ -368,16 +401,6 @@ async fn establish(
                 "HTTP/2 route has no authority".to_string(),
             )
         })?;
-    let physical_budget = if reserve_native_budget {
-        Some(super::native_budget::acquire(route).await.map_err(|error| {
-            H2ConnectError::new(
-                H2ConnectFailureKind::Tcp,
-                format!("failed to reserve HTTP/2 connection capacity: {error}"),
-            )
-        })?)
-    } else {
-        None
-    };
     let (host, port) = authority
         .rsplit_once(':')
         .map(|(host, port)| (host, port.parse::<u16>().unwrap_or(443)))
@@ -487,16 +510,16 @@ pub(crate) async fn shared_connection(
             )
         })?;
     let slot = connection_slot(&authority).await;
-    let mut cached = tokio::time::timeout(CONNECTION_WAIT_TIMEOUT, slot.lock())
-        .await
-        .map_err(|_| {
-            H2ConnectError::new(
-                H2ConnectFailureKind::Protocol,
-                format!(
-                    "timed out waiting for HTTP/2 connection slot {authority}"
-                ),
-            )
-        })?;
+    let mut cached = crate::util::fetch::wait_for_download_resource(
+        slot.lock(),
+    )
+    .await
+    .map_err(|_| {
+        H2ConnectError::new(
+            H2ConnectFailureKind::Capacity,
+            format!("HTTP/2 connection slot remained stalled for {authority}"),
+        )
+    })?;
     if let Some(connection) = cached.as_ref().filter(|connection| {
         !connection.is_dead() && !connection.is_idle_expired()
     }) {
@@ -525,9 +548,11 @@ pub(crate) async fn shared_connection(
         ));
     }
     tracing::debug!(authority, "Establishing cold shared HTTP/2 connection");
+    let physical_budget =
+        reserve_physical_budget(route, reserve_native_budget).await?;
     let connection = tokio::time::timeout(
         CONNECTION_WAIT_TIMEOUT,
-        establish(route, reserve_native_budget),
+        establish(route, physical_budget),
     )
     .await
     .map_err(|_| {
@@ -555,15 +580,16 @@ pub(crate) async fn shared_batch_connection(
             )
         })?;
     let slot = batch_connection_slot(&authority).await;
-    let mut cached = tokio::time::timeout(
-        CONNECTION_WAIT_TIMEOUT,
+    let mut cached = crate::util::fetch::wait_for_download_resource(
         slot.lock(),
     )
     .await
     .map_err(|_| {
         H2ConnectError::new(
-            H2ConnectFailureKind::Protocol,
-            format!("timed out waiting for asset HTTP/2 connection slot {authority}"),
+            H2ConnectFailureKind::Capacity,
+            format!(
+                "asset HTTP/2 connection slot remained stalled for {authority}"
+            ),
         )
     })?;
     if let Some(connection) = cached.as_ref().filter(|connection| {
@@ -591,9 +617,11 @@ pub(crate) async fn shared_batch_connection(
         *cached = None;
     }
     tracing::debug!(authority, "Establishing sibling HTTP/2 asset connection");
+    let physical_budget =
+        reserve_physical_budget(route, reserve_native_budget).await?;
     let connection = tokio::time::timeout(
         CONNECTION_WAIT_TIMEOUT,
-        establish(route, reserve_native_budget),
+        establish(route, physical_budget),
     )
     .await
     .map_err(|_| {
@@ -614,10 +642,13 @@ pub(crate) async fn has_live_connection(authority: &str) -> bool {
         return false;
     };
     drop(connections);
-    let live = slot
-        .lock()
-        .await
+    let Ok(cached) = slot.try_lock() else {
+        // This is only an eligibility probe. A busy slot means another task
+        // is establishing or refreshing the connection; do not queue this
+        // caller behind that work before its cancellation-aware download path.
+        return false;
+    };
+    cached
         .as_ref()
-        .is_some_and(|connection| !connection.is_dead());
-    live
+        .is_some_and(|connection| !connection.is_dead())
 }

packages/app-lib/src/util/download/h2_range.rs

@@ -218,13 +218,9 @@ async fn download_range(
         crate::install::DownloadItemStatus::WaitingForResource,
     )
     .await;
-    let _permit = tokio::time::timeout(
-        Duration::from_secs(45),
-        super::h2_stream_budget::acquire(route),
-    )
-    .await
-    .map_err(|_| H2DownloadFailure::Connect)?
-    .map_err(|_| H2DownloadFailure::Connect)?;
+    let _permit = super::h2_stream_budget::acquire_with_pressure(route)
+        .await
+        .map_err(|_| H2DownloadFailure::Connect)?;
     super::h2_download::record_install_stage(
         request,
         crate::install::DownloadItemStatus::Downloading,

packages/app-lib/src/util/download/h2_stream_budget.rs

@@ -104,6 +104,20 @@ pub(crate) async fn acquire(
     }
 }
 
+pub(crate) async fn acquire_with_pressure(
+    route: &DownloadRoute,
+) -> crate::Result<H2StreamPermit> {
+    crate::util::fetch::wait_for_download_resource(acquire(route))
+        .await
+        .map_err(|_| {
+            crate::Error::from(crate::ErrorKind::NetworkError(
+                "HTTP/2 stream permit remained stalled for 5 minutes"
+                    .to_string(),
+            ))
+        })?
+        .map_err(Into::into)
+}
+
 /// Acquires a stream for the Minecraft asset batch. Assets retain a large
 /// logical worker window, but use a separate physical stream pool so they
 /// cannot consume the ordinary native content share.
@@ -134,10 +148,25 @@ pub(crate) async fn acquire_asset(
     }
 }
 
+pub(crate) async fn acquire_asset_with_pressure(
+    route: &DownloadRoute,
+) -> crate::Result<H2StreamPermit> {
+    crate::util::fetch::wait_for_download_resource(acquire_asset(route))
+        .await
+        .map_err(|_| {
+            crate::Error::from(crate::ErrorKind::NetworkError(
+                "asset HTTP/2 stream permit remained stalled for 5 minutes"
+                    .to_string(),
+            ))
+        })?
+        .map_err(Into::into)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
     use crate::util::fetch::DownloadRouteSource;
+    use std::sync::atomic::{AtomicUsize, Ordering};
 
     fn route() -> DownloadRoute {
         DownloadRoute {
@@ -190,4 +219,40 @@ mod tests {
             MAX_H2_STREAMS_PER_AUTHORITY
         );
     }
+
+    #[tokio::test]
+    async fn contended_stream_wait_reports_pressure_and_resumes() {
+        let route = DownloadRoute {
+            url: "https://h2-pressure.example/file".to_string(),
+            source: DownloadRouteSource::Official,
+            is_mirror: false,
+            allow_sensitive_headers: true,
+            supports_range: true,
+            proxy: ProxyPolicy::Direct,
+        };
+        let mut held = Vec::new();
+        for _ in 0..MAX_H2_STREAMS_PER_AUTHORITY {
+            held.push(acquire(&route).await.unwrap());
+        }
+        let pressure = Arc::new(AtomicUsize::new(0));
+        let observed = Arc::clone(&pressure);
+        let release = tokio::spawn(async move {
+            tokio::time::sleep(Duration::from_millis(35)).await;
+            drop(held);
+        });
+
+        let permit = crate::util::fetch::wait_for_resource_with_pressure(
+            acquire(&route),
+            Duration::from_millis(5),
+            Duration::from_millis(100),
+            move || {
+                observed.fetch_add(1, Ordering::Relaxed);
+            },
+        )
+        .await;
+
+        release.await.unwrap();
+        assert!(permit.is_ok());
+        assert!(pressure.load(Ordering::Relaxed) >= 1);
+    }
 }

packages/app-lib/src/util/download/mod.rs

@@ -73,6 +73,19 @@ pub(crate) fn task_concurrency_limit(state: &crate::State) -> Option<usize> {
     if active_engine() == DownloadEngine::XmclCompat {
         None
     } else {
-        Some(state.download_concurrency())
+        Some(native_budget::task_limit(
+            state.download_concurrency(),
+            usize::MAX,
+        ))
+    }
+}
+
+pub(crate) fn single_authority_task_concurrency_limit(
+    state: &crate::State,
+) -> Option<usize> {
+    if active_engine() == DownloadEngine::XmclCompat {
+        None
+    } else {
+        Some(native_budget::task_limit(state.download_concurrency(), 1))
     }
 }

packages/app-lib/src/util/download/native_budget.rs

@@ -144,6 +144,15 @@ pub(crate) fn available(route: &DownloadRoute) -> usize {
         .unwrap_or(MAX_CONNECTIONS_PER_AUTHORITY)
 }
 
+pub(crate) fn task_limit(
+    configured_limit: usize,
+    authority_count: usize,
+) -> usize {
+    configured_limit.max(1).min(MAX_NATIVE_CONNECTIONS).min(
+        MAX_CONNECTIONS_PER_AUTHORITY.saturating_mul(authority_count.max(1)),
+    )
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -174,4 +183,11 @@ mod tests {
         drop(permits);
         assert!(try_acquire(&route).is_ok());
     }
+
+    #[test]
+    fn task_limit_matches_native_connection_capacity() {
+        assert_eq!(task_limit(128, 1), 8);
+        assert_eq!(task_limit(128, 4), 32);
+        assert_eq!(task_limit(4, 1), 4);
+    }
 }

packages/app-lib/src/util/fetch.rs

@@ -85,6 +85,8 @@ const MAX_REDIRECT_LOCATION_BYTES: usize = 8 * 1024;
 const FILE_TRANSFER_CONNECT_TIMEOUT: time::Duration =
     time::Duration::from_secs(20);
 const RESOURCE_WAIT_TIMEOUT: time::Duration = time::Duration::from_secs(45);
+const RESOURCE_PRESSURE_INTERVAL: time::Duration = time::Duration::from_secs(3);
+const RESOURCE_STALL_TIMEOUT: time::Duration = time::Duration::from_secs(300);
 #[cfg(not(test))]
 const FILE_TRANSFER_READ_TIMEOUT: time::Duration =
     time::Duration::from_secs(60);
@@ -3894,6 +3896,73 @@ struct NativeConnectionPermit<'a> {
     _native: crate::util::download::native_budget::NativeBudgetPermit,
 }
 
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub(crate) enum ResourceWaitError {
+    TimedOut,
+}
+
+pub(crate) async fn wait_for_resource_with_pressure<F, T, P>(
+    future: F,
+    pressure_interval: time::Duration,
+    stall_timeout: time::Duration,
+    mut on_pressure: P,
+) -> Result<T, ResourceWaitError>
+where
+    F: Future<Output = T>,
+    P: FnMut(),
+{
+    let pressure_interval =
+        pressure_interval.max(time::Duration::from_millis(1));
+    let pressure_timer = tokio::time::sleep(pressure_interval);
+    let stall_timer = tokio::time::sleep(stall_timeout);
+    tokio::pin!(future, pressure_timer, stall_timer);
+
+    loop {
+        tokio::select! {
+            result = &mut future => return Ok(result),
+            _ = &mut stall_timer => return Err(ResourceWaitError::TimedOut),
+            _ = &mut pressure_timer => {
+                on_pressure();
+                pressure_timer.as_mut().reset(
+                    tokio::time::Instant::now() + pressure_interval,
+                );
+            }
+        }
+    }
+}
+
+pub(crate) async fn wait_for_download_resource<F, T>(
+    future: F,
+) -> Result<T, ResourceWaitError>
+where
+    F: Future<Output = T>,
+{
+    wait_for_resource_with_pressure(
+        future,
+        RESOURCE_PRESSURE_INTERVAL,
+        RESOURCE_STALL_TIMEOUT,
+        || {
+            if let Some(state) = crate::State::get_if_initialized() {
+                state.record_download_queue_wait();
+            }
+        },
+    )
+    .await
+}
+
+pub(crate) async fn acquire_fetch_permit_with_pressure(
+    semaphore: &FetchSemaphore,
+) -> crate::Result<SemaphorePermit<'_>> {
+    wait_for_download_resource(semaphore.0.acquire())
+        .await
+        .map_err(|_| {
+            crate::Error::from(ErrorKind::NetworkError(
+                "download permit remained stalled for 5 minutes".to_string(),
+            ))
+        })?
+        .map_err(Into::into)
+}
+
 async fn acquire_native_connection<'a>(
     route: &DownloadRoute,
     semaphore: &'a FetchSemaphore,
@@ -3906,6 +3975,20 @@ async fn acquire_native_connection<'a>(
     })
 }
 
+async fn acquire_native_connection_with_pressure<'a>(
+    route: &DownloadRoute,
+    semaphore: &'a FetchSemaphore,
+) -> crate::Result<NativeConnectionPermit<'a>> {
+    wait_for_download_resource(acquire_native_connection(route, semaphore))
+        .await
+        .map_err(|_| {
+            crate::Error::from(ErrorKind::NetworkError(
+                "native download resources remained stalled for 5 minutes"
+                    .to_string(),
+            ))
+        })?
+}
+
 fn try_acquire_native_connection<'a>(
     route: &DownloadRoute,
     semaphore: &'a FetchSemaphore,
@@ -5703,19 +5786,11 @@ async fn download_to_path_inner(
         None
     };
     if let Some((h2_route, h2_policy)) = h2_selection {
-        let h2_permit =
-            tokio::time::timeout(RESOURCE_WAIT_TIMEOUT, semaphore.0.acquire())
-                .await
-                .map_err(|_| {
-                    ErrorKind::NetworkError(
-                        "timed out waiting for HTTP/2 download permit"
-                            .to_string(),
-                    )
-                })??;
         let h2_started = Instant::now();
         match crate::util::download::h2_download::try_download_via_h2(
             &request,
             &h2_route,
+            semaphore,
             destination,
             &part_path,
             h2_policy,
@@ -5808,7 +5883,6 @@ async fn download_to_path_inner(
                     .await?;
             }
         }
-        drop(h2_permit);
     }
 
     let mut official_integrity_retry = h2_failed_nonofficial.is_some();
@@ -6147,8 +6221,6 @@ async fn download_to_path_inner(
                 } else {
                     0
                 };
-                let mut activity = crate::State::get_if_initialized()
-                    .map(|state| state.begin_download_connection());
                 record_install_download_started(
                     &request,
                     route,
@@ -6161,25 +6233,21 @@ async fn download_to_path_inner(
                     DownloadItemStatus::WaitingForResource,
                 )
                 .await;
-                let permit_wait = tokio::time::timeout(
-                    RESOURCE_WAIT_TIMEOUT,
-                    acquire_native_connection(route, semaphore),
-                );
+                let permit_wait =
+                    acquire_native_connection_with_pressure(route, semaphore);
                 let resource_wait_started = Instant::now();
-                let permit = if let Some(cancellation) = request.cancellation.as_ref() {
+                let permit = if let Some(cancellation) =
+                    request.cancellation.as_ref()
+                {
                     tokio::select! {
                         _ = cancellation.cancelled() => return Err(ErrorKind::OtherError("download canceled while waiting for native resources".to_string()).into()),
                         result = permit_wait => result,
                     }
                 } else {
                     permit_wait.await
-                }
-                .map_err(|_| {
-                    ErrorKind::NetworkError(
-                        "timed out waiting for native download resources"
-                            .to_string(),
-                    )
-                })??;
+                }?;
+                let mut activity = crate::State::get_if_initialized()
+                    .map(|state| state.begin_download_connection());
                 tracing::debug!(
                     route = %sanitize_url_for_log(&route.url),
                     resource = "native_connection_and_fetch",
@@ -7135,6 +7203,40 @@ mod tests {
     static H2_FALLBACK_TEST_LOCK: LazyLock<std::sync::Mutex<()>> =
         LazyLock::new(|| std::sync::Mutex::new(()));
 
+    #[tokio::test]
+    async fn resource_wait_reports_pressure_without_losing_queue_position() {
+        let pressure_events = Arc::new(AtomicUsize::new(0));
+        let observed = Arc::clone(&pressure_events);
+        let result = wait_for_resource_with_pressure(
+            async {
+                tokio::time::sleep(Duration::from_millis(35)).await;
+                7
+            },
+            Duration::from_millis(5),
+            Duration::from_millis(100),
+            move || {
+                observed.fetch_add(1, Ordering::Relaxed);
+            },
+        )
+        .await;
+
+        assert_eq!(result, Ok(7));
+        assert!(pressure_events.load(Ordering::Relaxed) >= 1);
+    }
+
+    #[tokio::test]
+    async fn resource_wait_keeps_a_final_stall_guard() {
+        let result = wait_for_resource_with_pressure(
+            std::future::pending::<()>(),
+            Duration::from_millis(5),
+            Duration::from_millis(25),
+            || {},
+        )
+        .await;
+
+        assert_eq!(result, Err(ResourceWaitError::TimedOut));
+    }
+
     async fn spawn_range_server(
         data: Arc<Vec<u8>>,
         wrong_content_range: bool,