diff --git a/.env.debug b/.env.debug
index 637f41e3..30e7614a 100644
--- a/.env.debug
+++ b/.env.debug
@@ -1,3 +1,4 @@
 VITE_APM_STORE_LOCAL_MODE=true
 VITE_APM_STORE_BASE_URL=/local_amd64-store
 VITE_APM_STORE_STATS_BASE_URL=/local_stats
+VITE_SPARK_BACKEND_BASE_URL=http://127.0.0.1:8000
diff --git a/.gitignore b/.gitignore
index c07a2ded..f4a7205f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,13 @@ dist-electron
 release
 *.local
 
+# Local secrets and databases
+.env
+.env.*.local
+*.sqlite
+*.sqlite3
+*.db
+
 # Test coverage
 coverage
 .nyc_output
diff --git a/electron/main/index.ts b/electron/main/index.ts
index 53cf19d1..2b4b8035 100644
--- a/electron/main/index.ts
+++ b/electron/main/index.ts
@@ -40,6 +40,23 @@ function getAppVersion(): string {
   }
 }
 
+function getSystemInfo(): { distro: string } {
+  try {
+    const raw = fs.readFileSync("/etc/os-release", "utf8");
+    const fields = Object.fromEntries(
+      raw
+        .split("\n")
+        .map((line) => line.match(/^([A-Z_]+)=(.*)$/))
+        .filter((match): match is RegExpMatchArray => match !== null)
+        .map((match) => [match[1], match[2].replace(/^"|"$/g, "")]),
+    );
+    const distro = fields.PRETTY_NAME || fields.NAME || "unknown";
+    return { distro };
+  } catch {
+    return { distro: "unknown" };
+  }
+}
+
 // 处理 --version 参数（在单实例检查之前）
 if (process.argv.includes("--version") || process.argv.includes("-v")) {
   console.log(getAppVersion());
@@ -55,6 +72,7 @@ import "./backend/install-manager.js";
 import "./handle-url-scheme.js";
 
 const logger = pino({ name: "index.ts" });
+const FLARUM_TOKEN_URL = "https://bbs.spark-app.store/api/token";
 
 // The built directory structure
 //
@@ -117,6 +135,76 @@ ipcMain.handle("get-store-filter", (): "spark" | "apm" | "both" =>
 );
 
 ipcMain.handle("get-app-version", (): string => getAppVersion());
+ipcMain.handle("get-system-info", (): { distro: string } => getSystemInfo());
+
+ipcMain.handle("request-flarum-token", async (_event, payload: unknown) => {
+  if (!payload || typeof payload !== "object" || Array.isArray(payload)) {
+    throw new Error("登录信息格式不正确，请重新输入。");
+  }
+
+  const credentials = payload as Record<string, unknown>;
+  if (
+    typeof credentials.identification !== "string" ||
+    typeof credentials.password !== "string"
+  ) {
+    throw new Error("登录信息格式不正确，请重新输入。");
+  }
+
+  logger.info({ endpoint: FLARUM_TOKEN_URL }, "Requesting Flarum login token");
+
+  let response: Response;
+  try {
+    response = await fetch(FLARUM_TOKEN_URL, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        Accept: "application/json",
+        "User-Agent": getUserAgent(),
+      },
+      body: JSON.stringify({
+        identification: credentials.identification,
+        password: credentials.password,
+      }),
+    });
+  } catch (err) {
+    logger.error(
+      { err, endpoint: FLARUM_TOKEN_URL },
+      "Flarum token request failed before response",
+    );
+    throw new Error("无法连接星火论坛，请检查网络后重试。");
+  }
+
+  if (!response.ok) {
+    logger.warn(
+      { endpoint: FLARUM_TOKEN_URL, status: response.status },
+      "Flarum rejected login token request",
+    );
+    throw new Error("论坛登录失败，请检查账号和密码。");
+  }
+
+  const data = (await response.json()) as Record<string, unknown>;
+  const userId = data.userId ?? data.user_id;
+  if (
+    typeof data.token !== "string" ||
+    userId === undefined ||
+    userId === null
+  ) {
+    logger.warn(
+      {
+        endpoint: FLARUM_TOKEN_URL,
+        hasToken: typeof data.token === "string" && data.token.length > 0,
+        hasUserId: userId !== undefined && userId !== null,
+      },
+      "Flarum token response missing required fields",
+    );
+    throw new Error("论坛登录响应异常，请稍后重试。");
+  }
+
+  return {
+    token: data.token,
+    userId: String(userId),
+  };
+});
 
 const getMainWindowCloseGuardState = (): MainWindowCloseGuardState => ({
   installTaskCount: tasks.size,
diff --git a/src/App.vue b/src/App.vue
index 1440c1cf..17b544e7 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -24,11 +24,18 @@
         :store-filter="storeFilter"
         :sidebar-entries="sidebarEntries"
         :entry-counts="entryCounts"
+        :current-user="currentUser"
         @toggle-theme="toggleTheme"
         @select-tab="selectTab"
         @close="isSidebarOpen = false"
         @list="handleList"
         @update="handleUpdate"
+        @request-login="showLoginModal = true"
+        @open-user-management="openUserManagement"
+        @open-favorites="openFavoriteManagement"
+        @open-forum="openExternalUrl(FLARUM_BASE_URL)"
+        @edit-profile="openExternalUrl(FLARUM_SETTINGS_URL)"
+        @logout="handleLogout"
       />
     </aside>
 
@@ -55,7 +62,54 @@
         @select-category="selectSubCategory"
       />
       <div class="px-4 py-6 lg:px-10">
-        <template v-if="activeTab === 'home'">
+        <section
+          v-if="currentView === 'detail' && currentApp"
+          data-app-detail-page="detail"
+        >
+          <AppDetailPage
+            :app="currentApp"
+            :screenshots="screenshots"
+            :spark-installed="currentAppSparkInstalled"
+            :apm-installed="currentAppApmInstalled"
+            :logged-in="isLoggedIn"
+            :review-app-key="currentReviewAppKey"
+            :review-tags="currentReviewTags"
+            @back="closeDetail"
+            @install="onDetailInstall"
+            @remove="onDetailRemove"
+            @favorite="onDetailFavorite"
+            @request-login="handleDetailRequestLogin"
+            @open-preview="openScreenPreview"
+            @open-app="openDownloadedApp"
+            @check-install="checkAppInstalled"
+          />
+        </section>
+        <UserManagementView
+          v-else-if="currentView === 'account' && currentUser"
+          :user="currentUser"
+          :downloaded-apps="downloadedApps"
+          :sync-enabled="installedSyncEnabled ?? false"
+          :loading="downloadedLoading"
+          :error="downloadedError"
+          @open-forum="openExternalUrl(FLARUM_BASE_URL)"
+          @edit-profile="openExternalUrl(FLARUM_SETTINGS_URL)"
+          @toggle-sync="setInstalledSyncEnabled"
+          @sync-now="syncInstalledAppsNow"
+          @refresh-downloads="loadDownloadedHistory"
+        />
+        <FavoriteFolderManager
+          v-else-if="currentView === 'favorites'"
+          :folders="favoriteFolders"
+          :active-folder-id="activeFavoriteFolderId"
+          :items="resolvedFavoriteItems"
+          :loading="favoriteLoading"
+          :error="favoriteError"
+          @select-folder="selectFavoriteFolder"
+          @create-folder="createFavoriteFolderFromPrompt"
+          @remove-selected="removeSelectedFavorites"
+          @install-selected="installResolvedFavorites"
+        />
+        <template v-else-if="activeTab === 'home'">
           <HomeView
             :links="homeLinks"
             :lists="homeLists"
@@ -77,21 +131,6 @@
       </div>
     </main>
 
-    <AppDetailModal
-      data-app-modal="detail"
-      :show="showModal"
-      :app="currentApp"
-      :screenshots="screenshots"
-      :spark-installed="currentAppSparkInstalled"
-      :apm-installed="currentAppApmInstalled"
-      @close="closeDetail"
-      @install="onDetailInstall"
-      @remove="onDetailRemove"
-      @open-preview="openScreenPreview"
-      @open-app="openDownloadedApp"
-      @check-install="checkAppInstalled"
-    />
-
     <ScreenPreview
       :show="showPreview"
       :screenshots="screenshots"
@@ -131,12 +170,27 @@
       :store-filter="storeFilter"
       :spark-available="sparkAvailable"
       :apm-available="apmAvailable"
+      :logged-in="isLoggedIn"
+      :syncing="syncLoading"
       @close="closeInstalledModal"
       @refresh="refreshInstalledApps"
       @open-app="openDownloadedApp($event.pkgname, $event.origin)"
       @open-detail="openDetail"
       @uninstall="uninstallInstalledApp"
       @switch-origin="handleSwitchOrigin"
+      @sync-to-account="syncInstalledAppsToAccount"
+      @restore-from-account="openRestoreFromAccount"
+      @request-login="requireLogin('云端同步需要登录星火账号。')"
+    />
+
+    <AppListRestoreModal
+      :show="showRestoreModal"
+      :loading="restoreLoading"
+      :error="restoreError"
+      :items="restoreItems"
+      :installed-keys="installedCloudKeys"
+      @close="showRestoreModal = false"
+      @install-selected="installCloudItems"
     />
 
     <UpdateCenterModal
@@ -169,6 +223,30 @@
     <AboutModal :show="showAboutModal" @close="closeAboutModal" />
 
     <SettingsModal :show="showSettingsModal" @close="closeSettingsModal" />
+
+    <LoginModal
+      :show="showLoginModal"
+      :loading="loginLoading"
+      :error="loginError"
+      @close="showLoginModal = false"
+      @login="handleFlarumLogin"
+      @register="openExternalUrl(FLARUM_REGISTER_URL)"
+    />
+
+    <LoginPromptModal
+      :show="showLoginPrompt"
+      :message="loginPromptMessage"
+      @close="showLoginPrompt = false"
+      @login="openLoginFromPrompt"
+      @register="openExternalUrl(FLARUM_REGISTER_URL)"
+    />
+
+    <FavoriteFolderSelector
+      :show="showFavoriteSelector"
+      :folders="favoriteFolders"
+      @close="showFavoriteSelector = false"
+      @select-folder="addCurrentFavoriteToFolder"
+    />
   </div>
 </template>
 
@@ -181,18 +259,27 @@ import AppHeader from "./components/AppHeader.vue";
 import AppGrid from "./components/AppGrid.vue";
 import HomeView from "./components/HomeView.vue";
 import CategoryBar from "./components/CategoryBar.vue";
-import AppDetailModal from "./components/AppDetailModal.vue";
+import AppDetailPage from "./components/AppDetailPage.vue";
 import ScreenPreview from "./components/ScreenPreview.vue";
 import DownloadQueue from "./components/DownloadQueue.vue";
 import DownloadDetail from "./components/DownloadDetail.vue";
 import InstalledAppsModal from "./components/InstalledAppsModal.vue";
+import AppListRestoreModal from "./components/AppListRestoreModal.vue";
 import UpdateCenterModal from "./components/UpdateCenterModal.vue";
 import UninstallConfirmModal from "./components/UninstallConfirmModal.vue";
 import ApmInstallConfirmModal from "./components/ApmInstallConfirmModal.vue";
 import AboutModal from "./components/AboutModal.vue";
 import SettingsModal from "./components/SettingsModal.vue";
+import LoginModal from "./components/LoginModal.vue";
+import LoginPromptModal from "./components/LoginPromptModal.vue";
+import FavoriteFolderSelector from "./components/FavoriteFolderSelector.vue";
+import FavoriteFolderManager from "./components/FavoriteFolderManager.vue";
+import UserManagementView from "./components/UserManagementView.vue";
 import {
   APM_STORE_BASE_URL,
+  FLARUM_BASE_URL,
+  FLARUM_REGISTER_URL,
+  FLARUM_SETTINGS_URL,
   currentApp,
   currentAppSparkInstalled,
   currentAppApmInstalled,
@@ -206,11 +293,35 @@ import {
   removeDownloadItem,
   watchDownloadsChange,
 } from "./global/downloadStatus";
+import {
+  installedSyncEnabled,
+  loadInstalledSyncPreference,
+  setInstalledSyncEnabled,
+} from "./global/accountSyncState";
 import {
   countSearchMatchesByCategory,
   rankAppsBySearch,
 } from "./modules/appSearch";
 import { handleInstall, handleRetry } from "./modules/processInstall";
+import {
+  addFavoriteItem,
+  bulkDeleteFavoriteItems,
+  createFavoriteFolder,
+  exchangeFlarumToken,
+  fetchSyncedAppList,
+  listDownloadedApps,
+  listFavoriteFolders,
+  listFavoriteItems,
+  recordDownloadedApp,
+  uploadSyncedAppList,
+} from "./modules/backendApi";
+import { requestFlarumToken } from "./modules/flarumAuth";
+import {
+  currentUser,
+  isLoggedIn,
+  logout,
+  setAuthSession,
+} from "./global/authState";
 import {
   getAllowedInstalledOrigin,
   getEffectiveStoreFilter,
@@ -218,16 +329,39 @@ import {
   isOriginEnabled,
 } from "./modules/storeFilter";
 import { createUpdateCenterStore } from "./modules/updateCenter";
+import {
+  buildReviewAppKey,
+  buildFavoriteAppKey,
+  buildReviewTags,
+  getDisplayApp,
+  parsePackageArch,
+} from "./modules/appIdentity";
+import { resolveFavoriteItems } from "./modules/favoriteAvailability";
+import {
+  buildSyncItems,
+  cloudItemKey,
+  mergeInstalledApps,
+} from "./modules/appListSync";
 import type {
   App,
   AppJson,
   DownloadItem,
+  DownloadResult,
   ChannelPayload,
   CategoryInfo,
   HomeLink,
   HomeList,
+  FlarumLoginPayload,
   SidebarEntry,
   UpdateCenterItem,
+  ReviewTags,
+  FavoriteFolder,
+  FavoriteItem,
+  InstalledAppInfo,
+  ResolvedFavoriteItem,
+  SystemInfo,
+  DownloadedAppRecord,
+  SyncedAppListItem,
 } from "./global/typedefinition";
 import type { Ref } from "vue";
 import type { IpcRendererEvent } from "electron";
@@ -269,10 +403,12 @@ const isDarkTheme = computed(() => {
 const categories: Ref<Record<string, CategoryInfo>> = ref({});
 const apps: Ref<App[]> = ref([]);
 const activeTab = ref("home");
+type MainView = "default" | "account" | "favorites" | "detail";
+const currentView = ref<MainView>("default");
+const detailPreviousView = ref<MainView>("default");
 const selectedCategory = ref("all");
 const searchQuery = ref("");
 const isSidebarOpen = ref(false);
-const showModal = ref(false);
 const showPreview = ref(false);
 const currentScreenIndex = ref(0);
 const screenshots = ref<string[]>([]);
@@ -289,9 +425,43 @@ const showUninstallModal = ref(false);
 const uninstallTargetApp: Ref<App | null> = ref(null);
 const showAboutModal = ref(false);
 const showSettingsModal = ref(false);
+const showLoginModal = ref(false);
+const loginLoading = ref(false);
+const loginError = ref("");
+const showLoginPrompt = ref(false);
+const loginPromptMessage = ref("请登录星火账号后继续操作。");
 const sparkAvailable = ref(false);
 const apmAvailable = ref(false);
 const sidebarEntries: Ref<SidebarEntry[]> = ref([]);
+const favoriteFolders = ref<FavoriteFolder[]>([]);
+const activeFavoriteFolderId = ref<number | null>(null);
+const favoriteItems = ref<FavoriteItem[]>([]);
+const showFavoriteSelector = ref(false);
+const favoriteTargetApp = ref<App | null>(null);
+const favoriteLoading = ref(false);
+const favoriteError = ref("");
+const favoriteRequestGeneration = ref(0);
+const downloadedApps = ref<DownloadedAppRecord[]>([]);
+const downloadedLoading = ref(false);
+const downloadedError = ref("");
+const downloadedRequestGeneration = ref(0);
+const syncLoading = ref(false);
+const syncRequestGeneration = ref(0);
+const syncCandidateApps = ref<App[]>([]);
+const restoreLoading = ref(false);
+const restoreError = ref("");
+const showRestoreModal = ref(false);
+const restoreItems = ref<SyncedAppListItem[]>([]);
+const restoreRequestGeneration = ref(0);
+const installedSyncPromptShown = ref(false);
+const systemInfo = ref<SystemInfo>({ distro: "unknown" });
+type PendingDownloadRecord = Omit<
+  DownloadedAppRecord,
+  "id" | "downloadedAt"
+> & {
+  userId: number;
+};
+const pendingDownloadRecords = new Map<number, PendingDownloadRecord>();
 
 /** 启动参数 --no-apm => 仅 Spark；--no-spark => 仅 APM；由主进程 IPC 提供 */
 const storeFilter = ref<"spark" | "apm" | "both">("both");
@@ -376,6 +546,38 @@ const entryCounts = computed(() => {
   return counts;
 });
 
+const currentDisplayApp = computed(() => getDisplayApp(currentApp.value));
+
+const clientArch = computed(() => window.apm_store.arch || "amd64");
+
+const currentReviewAppKey = computed(() => {
+  if (!currentDisplayApp.value) return "";
+  return buildReviewAppKey(currentDisplayApp.value, clientArch.value);
+});
+
+const currentReviewTags = computed<ReviewTags | null>(() => {
+  if (!currentDisplayApp.value) return null;
+  return buildReviewTags(currentDisplayApp.value, {
+    clientArch: clientArch.value,
+    distro: systemInfo.value.distro,
+  });
+});
+
+const resolvedFavoriteItems = computed<ResolvedFavoriteItem[]>(() =>
+  resolveFavoriteItems(
+    favoriteItems.value,
+    apps.value,
+    installedApps.value,
+    availableSources.value,
+    storeFilter.value,
+    clientArch.value,
+  ),
+);
+
+const installedCloudKeys = computed(
+  () => new Set(installedApps.value.map((app) => cloudItemKey(app))),
+);
+
 // 方法
 const syncThemePreference = () => {
   document.documentElement.classList.toggle("dark", isDarkTheme.value);
@@ -413,6 +615,7 @@ const toggleTheme = () => {
 };
 
 const selectTab = (tab: string) => {
+  currentView.value = "default";
   activeTab.value = tab;
   selectedCategory.value = "all";
   isSidebarOpen.value = false;
@@ -427,6 +630,7 @@ const selectTab = (tab: string) => {
 };
 
 const selectSubCategory = (category: string) => {
+  currentView.value = "default";
   selectedCategory.value = category;
   window.scrollTo({ top: 0, behavior: "smooth" });
 };
@@ -489,6 +693,8 @@ const fetchAppFromStore = async (
 };
 
 const openDetail = async (app: App | Record<string, unknown>) => {
+  detailPreviousView.value =
+    currentView.value === "detail" ? "default" : currentView.value;
   // 提取 pkgname 和 category（必须存在）
   const pkgname = (app as Record<string, unknown>).pkgname as string;
   const category =
@@ -633,17 +839,14 @@ const openDetail = async (app: App | Record<string, unknown>) => {
   currentApp.value = finalApp;
   currentScreenIndex.value = 0;
   loadScreenshots(displayAppForScreenshots);
-  showModal.value = true;
+  currentView.value = "detail";
 
   currentAppSparkInstalled.value = false;
   currentAppApmInstalled.value = false;
   checkAppInstalled(finalApp);
 
   nextTick(() => {
-    const modal = document.querySelector(
-      '[data-app-modal="detail"] .modal-panel',
-    );
-    if (modal) modal.scrollTop = 0;
+    window.scrollTo({ top: 0, behavior: "smooth" });
   });
 };
 
@@ -693,7 +896,11 @@ const loadScreenshots = (app: App) => {
 };
 
 const closeDetail = () => {
-  showModal.value = false;
+  currentView.value =
+    detailPreviousView.value === "detail"
+      ? "default"
+      : detailPreviousView.value;
+  detailPreviousView.value = "default";
   currentApp.value = null;
 };
 
@@ -992,6 +1199,95 @@ const refreshInstalledApps = async () => {
   }
 };
 
+const mapInstalledAppToCatalogApp = (
+  app: InstalledAppInfo,
+  origin: "spark" | "apm",
+): App | null => {
+  let appInfo = apps.value.find(
+    (catalogApp) =>
+      catalogApp.pkgname === app.pkgname && catalogApp.origin === origin,
+  );
+
+  if (origin === "spark" && !appInfo) {
+    return null;
+  }
+
+  if (appInfo) {
+    appInfo.flags = app.flags;
+    appInfo.arch = app.arch;
+    appInfo.currentStatus = "installed";
+    appInfo.isDependency = app.isDependency;
+    return appInfo;
+  }
+
+  return {
+    name: app.name || app.pkgname,
+    pkgname: app.pkgname,
+    version: app.version,
+    category: "unknown",
+    tags: "",
+    more: "",
+    filename: "",
+    torrent_address: "",
+    author: "",
+    contributor: "",
+    website: "",
+    update: "",
+    size: "",
+    img_urls: [],
+    icons: app.icon || "",
+    origin: app.origin || (app.arch?.includes("apm") ? "apm" : "spark"),
+    currentStatus: "installed",
+    arch: app.arch,
+    flags: app.flags,
+    isDependency: app.isDependency,
+  };
+};
+
+const refreshFavoriteInstalledApps = async (): Promise<void> => {
+  const origins: Array<"spark" | "apm"> = [];
+  if (isOriginEnabled(storeFilter.value, "spark") && sparkAvailable.value) {
+    origins.push("spark");
+  }
+  if (isOriginEnabled(storeFilter.value, "apm") && apmAvailable.value) {
+    origins.push("apm");
+  }
+
+  const refreshedApps: App[] = [];
+  await Promise.all(
+    origins.map(async (origin) => {
+      const pkgnameList =
+        origin === "spark"
+          ? apps.value
+              .filter((app) => app.origin === "spark")
+              .map((app) => app.pkgname)
+          : undefined;
+      const result = await window.ipcRenderer.invoke("list-installed", {
+        origin,
+        pkgnameList,
+      });
+      if (!result?.success) return;
+
+      for (const app of result.apps as InstalledAppInfo[]) {
+        const appInfo = mapInstalledAppToCatalogApp(app, origin);
+        if (appInfo) refreshedApps.push(appInfo);
+      }
+    }),
+  );
+
+  const refreshedKeys = new Set(
+    refreshedApps.map((app) => `${app.origin}:${app.pkgname}`),
+  );
+  installedApps.value = [
+    ...installedApps.value.filter(
+      (app) =>
+        !origins.includes(app.origin) &&
+        !refreshedKeys.has(`${app.origin}:${app.pkgname}`),
+    ),
+    ...refreshedApps,
+  ];
+};
+
 const requestUninstall = (app: App) => {
   uninstallTargetApp.value = app;
   showUninstallModal.value = true;
@@ -1003,7 +1299,71 @@ const onDetailRemove = (app: App) => {
 };
 
 const onDetailInstall = async (app: App) => {
-  await handleInstall(app);
+  const initiatingUserId = currentUser.value?.id ?? null;
+  const download = await handleInstall(app);
+  if (
+    !download ||
+    initiatingUserId === null ||
+    !isLoggedIn.value ||
+    currentUser.value?.id !== initiatingUserId
+  ) {
+    return;
+  }
+
+  pendingDownloadRecords.set(download.id, {
+    userId: initiatingUserId,
+    appKey: buildFavoriteAppKey(app),
+    pkgname: app.pkgname,
+    name: app.name,
+    category: app.category,
+    selectedOrigin: app.origin,
+    version: app.version,
+    packageArch: app.arch || parsePackageArch(app.filename),
+  });
+};
+
+const handleInstallCompleteForDownloadRecord = async (
+  _event: IpcRendererEvent,
+  result: DownloadResult,
+) => {
+  const pendingRecord = pendingDownloadRecords.get(result.id);
+  if (!pendingRecord) return;
+
+  if (result.success) {
+    pendingDownloadRecords.delete(result.id);
+  }
+
+  if (
+    !result.success ||
+    !isLoggedIn.value ||
+    currentUser.value?.id !== pendingRecord.userId
+  ) {
+    return;
+  }
+
+  const downloadRecord: Omit<DownloadedAppRecord, "id" | "downloadedAt"> = {
+    appKey: pendingRecord.appKey,
+    pkgname: pendingRecord.pkgname,
+    name: pendingRecord.name,
+    category: pendingRecord.category,
+    selectedOrigin: pendingRecord.selectedOrigin,
+    version: pendingRecord.version,
+    packageArch: pendingRecord.packageArch,
+  };
+
+  try {
+    await recordDownloadedApp(downloadRecord);
+  } catch (error: unknown) {
+    logger.warn({ err: error }, "记录下载应用失败");
+  }
+};
+
+const onDetailFavorite = async (app: App) => {
+  await openFavoriteSelector(app);
+};
+
+const handleDetailRequestLogin = (message: string) => {
+  requireLogin(message);
 };
 
 const closeUninstallModal = () => {
@@ -1017,7 +1377,7 @@ const onUninstallSuccess = () => {
     refreshInstalledApps();
   }
   // 更新当前详情页状态（如果在显示）
-  if (showModal.value && currentApp.value) {
+  if (currentView.value === "detail" && currentApp.value) {
     checkAppInstalled(currentApp.value);
   }
 };
@@ -1062,6 +1422,459 @@ const closeSettingsModal = () => {
   showSettingsModal.value = false;
 };
 
+const openExternalUrl = (url: string) => {
+  window.open(url, "_blank", "noopener,noreferrer");
+};
+
+const requireLogin = (message: string): boolean => {
+  if (isLoggedIn.value) return true;
+  loginPromptMessage.value = message;
+  showLoginPrompt.value = true;
+  return false;
+};
+
+const openLoginFromPrompt = () => {
+  showLoginPrompt.value = false;
+  showLoginModal.value = true;
+};
+
+const clearFavoriteState = () => {
+  favoriteRequestGeneration.value += 1;
+  favoriteFolders.value = [];
+  activeFavoriteFolderId.value = null;
+  favoriteItems.value = [];
+  showFavoriteSelector.value = false;
+  favoriteTargetApp.value = null;
+  favoriteLoading.value = false;
+  favoriteError.value = "";
+};
+
+const clearDownloadedState = () => {
+  downloadedRequestGeneration.value += 1;
+  downloadedApps.value = [];
+  downloadedLoading.value = false;
+  downloadedError.value = "";
+};
+
+const clearRestoreState = () => {
+  restoreRequestGeneration.value += 1;
+  restoreItems.value = [];
+  restoreLoading.value = false;
+  restoreError.value = "";
+  showRestoreModal.value = false;
+};
+
+const nextFavoriteRequestGeneration = (): number => {
+  favoriteRequestGeneration.value += 1;
+  return favoriteRequestGeneration.value;
+};
+
+const nextDownloadedRequestGeneration = (): number => {
+  downloadedRequestGeneration.value += 1;
+  return downloadedRequestGeneration.value;
+};
+
+const isCurrentFavoriteRequest = (generation: number): boolean =>
+  favoriteRequestGeneration.value === generation && isLoggedIn.value;
+
+const isCurrentDownloadedRequest = (
+  generation: number,
+  userId: number,
+): boolean =>
+  downloadedRequestGeneration.value === generation &&
+  currentUser.value?.id === userId;
+
+const isCurrentRestoreRequest = (generation: number, userId: number): boolean =>
+  restoreRequestGeneration.value === generation &&
+  currentUser.value?.id === userId;
+
+const handleLogout = () => {
+  logout();
+  pendingDownloadRecords.clear();
+  clearFavoriteState();
+  clearDownloadedState();
+  clearRestoreState();
+  syncRequestGeneration.value += 1;
+  syncLoading.value = false;
+  syncCandidateApps.value = [];
+  loadInstalledSyncPreference(null);
+  showLoginModal.value = false;
+  showLoginPrompt.value = false;
+  isSidebarOpen.value = false;
+  if (currentView.value === "favorites" || currentView.value === "account") {
+    currentView.value = "default";
+    activeTab.value = "home";
+    selectedCategory.value = "all";
+  }
+};
+
+const handleFlarumLogin = async (payload: FlarumLoginPayload) => {
+  loginLoading.value = true;
+  loginError.value = "";
+
+  try {
+    const flarumToken = await requestFlarumToken(payload);
+    const session = await exchangeFlarumToken({
+      flarumUserId: flarumToken.userId,
+      flarumToken: flarumToken.token,
+    });
+    setAuthSession(session);
+    loadInstalledSyncPreference(session.user.id);
+    showLoginModal.value = false;
+  } catch (error: unknown) {
+    loginError.value = (error as Error)?.message || "登录失败，请稍后重试";
+  } finally {
+    loginLoading.value = false;
+  }
+};
+
+const loadDownloadedHistory = async (): Promise<void> => {
+  if (!requireLogin("请登录后查看和管理账号信息。")) return;
+  const userId = currentUser.value?.id;
+  if (userId === undefined) return;
+  const generation = nextDownloadedRequestGeneration();
+
+  downloadedLoading.value = true;
+  downloadedError.value = "";
+  try {
+    const result = await listDownloadedApps(1, 50);
+    if (!isCurrentDownloadedRequest(generation, userId)) return;
+    downloadedApps.value = result.items;
+  } catch (error: unknown) {
+    if (!isCurrentDownloadedRequest(generation, userId)) return;
+    downloadedApps.value = [];
+    downloadedError.value = (error as Error)?.message || "读取下载历史失败";
+  } finally {
+    if (isCurrentDownloadedRequest(generation, userId)) {
+      downloadedLoading.value = false;
+    }
+  }
+};
+
+const refreshInstalledSyncCandidates = async (
+  isCurrentRequest: () => boolean,
+): Promise<boolean> => {
+  const origins: Array<"spark" | "apm"> = [];
+  if (isOriginEnabled(storeFilter.value, "spark") && sparkAvailable.value) {
+    origins.push("spark");
+  }
+  if (isOriginEnabled(storeFilter.value, "apm") && apmAvailable.value) {
+    origins.push("apm");
+  }
+
+  const refreshedApps: App[] = [];
+  await Promise.all(
+    origins.map(async (origin) => {
+      const pkgnameList =
+        origin === "spark"
+          ? apps.value
+              .filter((app) => app.origin === "spark")
+              .map((app) => app.pkgname)
+          : undefined;
+      const result = await window.ipcRenderer.invoke("list-installed", {
+        origin,
+        pkgnameList,
+      });
+      if (!result?.success) return;
+
+      for (const app of result.apps as InstalledAppInfo[]) {
+        const appInfo = mapInstalledAppToCatalogApp(app, origin);
+        if (appInfo) refreshedApps.push(appInfo);
+      }
+    }),
+  );
+
+  if (!isCurrentRequest()) {
+    return false;
+  }
+
+  syncCandidateApps.value = mergeInstalledApps(
+    syncCandidateApps.value,
+    refreshedApps,
+    origins,
+  );
+  return true;
+};
+
+const syncInstalledAppsToAccount = async (): Promise<void> => {
+  if (!requireLogin("云端同步需要登录星火账号。")) return;
+  if (syncLoading.value) return;
+  const userId = currentUser.value?.id;
+  if (userId === undefined) return;
+  const generation = syncRequestGeneration.value + 1;
+  syncRequestGeneration.value = generation;
+  syncLoading.value = true;
+  try {
+    const refreshed = await refreshInstalledSyncCandidates(
+      () =>
+        syncRequestGeneration.value === generation &&
+        currentUser.value?.id === userId,
+    );
+    if (!refreshed) return;
+    const items = buildSyncItems(syncCandidateApps.value);
+    await uploadSyncedAppList({
+      clientArch: window.apm_store.arch || "amd64",
+      distro: systemInfo.value.distro,
+      items,
+    });
+    if (
+      syncRequestGeneration.value !== generation ||
+      currentUser.value?.id !== userId
+    ) {
+      return;
+    }
+    downloadedError.value = "";
+  } catch (error: unknown) {
+    if (
+      syncRequestGeneration.value !== generation ||
+      currentUser.value?.id !== userId
+    ) {
+      return;
+    }
+    downloadedError.value = (error as Error)?.message || "同步已安装应用失败";
+  } finally {
+    if (
+      syncRequestGeneration.value === generation &&
+      currentUser.value?.id === userId
+    ) {
+      syncLoading.value = false;
+    }
+  }
+};
+
+const syncInstalledAppsNow = (): void => {
+  void syncInstalledAppsToAccount();
+};
+
+const openRestoreFromAccount = async (): Promise<void> => {
+  if (!requireLogin("云端同步需要登录星火账号。")) return;
+  const userId = currentUser.value?.id;
+  if (userId === undefined) return;
+  const generation = restoreRequestGeneration.value + 1;
+  restoreRequestGeneration.value = generation;
+  showRestoreModal.value = true;
+  restoreLoading.value = true;
+  restoreError.value = "";
+  restoreItems.value = [];
+  try {
+    const refreshed = await refreshInstalledSyncCandidates(() =>
+      isCurrentRestoreRequest(generation, userId),
+    );
+    if (!refreshed) return;
+    const result = await fetchSyncedAppList();
+    if (!isCurrentRestoreRequest(generation, userId)) return;
+    restoreItems.value = result?.items || [];
+  } catch (error: unknown) {
+    if (!isCurrentRestoreRequest(generation, userId)) return;
+    restoreError.value = (error as Error)?.message || "读取云端应用列表失败";
+  } finally {
+    if (isCurrentRestoreRequest(generation, userId)) {
+      restoreLoading.value = false;
+    }
+  }
+};
+
+const installCloudItems = (items: SyncedAppListItem[]): void => {
+  for (const item of items) {
+    const candidates = apps.value.filter(
+      (candidate) =>
+        candidate.pkgname === item.pkgname && candidate.origin === item.origin,
+    );
+    const app =
+      candidates.find((candidate) => candidate.category === item.category) ??
+      candidates[0];
+    if (!app) continue;
+    void onDetailInstall(app);
+  }
+  showRestoreModal.value = false;
+};
+
+const maybePromptInstalledSync = async (): Promise<void> => {
+  if (
+    import.meta.env.MODE === "test" ||
+    !isLoggedIn.value ||
+    installedSyncPromptShown.value ||
+    installedSyncEnabled.value !== null
+  ) {
+    if (isLoggedIn.value && installedSyncEnabled.value === true) {
+      await syncInstalledAppsToAccount();
+    }
+    return;
+  }
+
+  installedSyncPromptShown.value = true;
+  const enabled = window.confirm(
+    "是否启用已安装应用列表自动同步到星火账号？仅同步商店识别的非依赖应用。",
+  );
+  setInstalledSyncEnabled(enabled);
+  if (enabled) await syncInstalledAppsToAccount();
+};
+
+const openUserManagement = async () => {
+  if (!requireLogin("请登录后查看和管理账号信息。")) return;
+  currentView.value = "account";
+  activeTab.value = "account";
+  isSidebarOpen.value = false;
+  showLoginPrompt.value = false;
+  await loadDownloadedHistory();
+};
+
+const loadFavoriteFolders = async (
+  generation = favoriteRequestGeneration.value,
+): Promise<boolean> => {
+  const folders = await listFavoriteFolders();
+  if (!isCurrentFavoriteRequest(generation)) return false;
+
+  favoriteFolders.value = folders;
+  const activeFolderExists = folders.some(
+    (folder) => folder.id === activeFavoriteFolderId.value,
+  );
+  if (!activeFolderExists) {
+    activeFavoriteFolderId.value = folders[0]?.id ?? null;
+  }
+  return true;
+};
+
+const loadActiveFavoriteItems = async (
+  generation = favoriteRequestGeneration.value,
+): Promise<boolean> => {
+  if (!activeFavoriteFolderId.value) {
+    if (!isCurrentFavoriteRequest(generation)) return false;
+    favoriteItems.value = [];
+    return true;
+  }
+  const items = await listFavoriteItems(activeFavoriteFolderId.value);
+  if (!isCurrentFavoriteRequest(generation)) return false;
+
+  favoriteItems.value = items;
+  return true;
+};
+
+const refreshFavorites = async (): Promise<void> => {
+  const generation = nextFavoriteRequestGeneration();
+  favoriteLoading.value = true;
+  favoriteError.value = "";
+  try {
+    await Promise.all([
+      refreshFavoriteInstalledApps(),
+      loadFavoriteFolders(generation),
+    ]);
+    if (!isCurrentFavoriteRequest(generation)) return;
+    await loadActiveFavoriteItems(generation);
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "读取收藏夹失败";
+  } finally {
+    if (isCurrentFavoriteRequest(generation)) favoriteLoading.value = false;
+  }
+};
+
+const openFavoriteSelector = async (app: App) => {
+  if (!requireLogin("收藏应用需要登录星火账号。")) return;
+  const generation = favoriteRequestGeneration.value;
+  favoriteTargetApp.value = app;
+  favoriteError.value = "";
+  try {
+    const foldersLoaded = await loadFavoriteFolders(generation);
+    if (!foldersLoaded || !isCurrentFavoriteRequest(generation)) return;
+    showFavoriteSelector.value = true;
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "读取收藏夹失败";
+  }
+};
+
+const addCurrentFavoriteToFolder = async (folderId: number | "default") => {
+  const generation = favoriteRequestGeneration.value;
+  const app = favoriteTargetApp.value;
+  if (!app) return;
+  try {
+    await addFavoriteItem(folderId, {
+      appKey: buildFavoriteAppKey(app),
+      pkgname: app.pkgname,
+      name: app.name,
+      category: app.category,
+      iconUrl: app.icons,
+    });
+    if (!isCurrentFavoriteRequest(generation)) return;
+    showFavoriteSelector.value = false;
+    favoriteTargetApp.value = null;
+    await refreshFavorites();
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "添加收藏失败";
+  }
+};
+
+const openFavoriteManagement = async () => {
+  if (!requireLogin("请登录后查看我的收藏。")) return;
+  currentView.value = "favorites";
+  activeTab.value = "favorites";
+  isSidebarOpen.value = false;
+  showLoginPrompt.value = false;
+  await refreshFavorites();
+};
+
+const selectFavoriteFolder = async (folderId: number) => {
+  const generation = nextFavoriteRequestGeneration();
+  activeFavoriteFolderId.value = folderId;
+  favoriteLoading.value = true;
+  favoriteError.value = "";
+  try {
+    await loadActiveFavoriteItems(generation);
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "读取收藏应用失败";
+  } finally {
+    if (isCurrentFavoriteRequest(generation)) favoriteLoading.value = false;
+  }
+};
+
+const createFavoriteFolderFromPrompt = async () => {
+  const name = window.prompt("请输入收藏夹名称");
+  const folderName = name?.trim();
+  if (!folderName) return;
+  const generation = favoriteRequestGeneration.value;
+  favoriteLoading.value = true;
+  favoriteError.value = "";
+  try {
+    const folder = await createFavoriteFolder(folderName);
+    if (!isCurrentFavoriteRequest(generation)) return;
+    activeFavoriteFolderId.value = folder.id;
+    await refreshFavorites();
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "创建收藏夹失败";
+  } finally {
+    if (isCurrentFavoriteRequest(generation)) favoriteLoading.value = false;
+  }
+};
+
+const removeSelectedFavorites = async (ids: number[]) => {
+  if (!activeFavoriteFolderId.value || ids.length === 0) return;
+  const generation = favoriteRequestGeneration.value;
+  favoriteLoading.value = true;
+  favoriteError.value = "";
+  try {
+    await bulkDeleteFavoriteItems(activeFavoriteFolderId.value, ids);
+    if (!isCurrentFavoriteRequest(generation)) return;
+    await refreshFavorites();
+  } catch (error: unknown) {
+    if (!isCurrentFavoriteRequest(generation)) return;
+    favoriteError.value = (error as Error)?.message || "移除收藏失败";
+  } finally {
+    if (isCurrentFavoriteRequest(generation)) favoriteLoading.value = false;
+  }
+};
+
+const installResolvedFavorites = async (items: ResolvedFavoriteItem[]) => {
+  for (const item of items) {
+    if (item.selectedApp) {
+      await onDetailInstall(item.selectedApp);
+    }
+  }
+};
+
 // TODO: 目前 APM 商店不能暂停下载
 const pauseDownload = (id: DownloadItem) => {
   const download = downloads.value.find((d) => d.id === id.id);
@@ -1195,7 +2008,7 @@ const loadSidebarConfig = async () => {
       try {
         const response = await axiosInstance.get(path);
         const data = response.data;
-        const entries = Array.isArray(data) ? data : (data.entries || []);
+        const entries = Array.isArray(data) ? data : data.entries || [];
 
         for (const entry of entries) {
           if (entry.id && entry.name) {
@@ -1249,9 +2062,7 @@ const loadApps = async (onFirstBatch?: () => void) => {
               const path = `/${finalArch}/${category}/applist.json`;
 
               logger.info(`加载分类: ${category} (来源: ${mode})`);
-              const categoryApps = await fetchWithRetry<AppJson[]>(
-                path,
-              );
+              const categoryApps = await fetchWithRetry<AppJson[]>(path);
 
               const normalizedApps = (categoryApps || []).map((appJson) => ({
                 name: appJson.Name,
@@ -1304,10 +2115,12 @@ const loadApps = async (onFirstBatch?: () => void) => {
 };
 
 const handleSearchInput = (value: string) => {
+  currentView.value = "default";
   searchQuery.value = value;
 };
 
 const handleSearchFocus = () => {
+  currentView.value = "default";
   if (activeTab.value === "home") activeTab.value = "all";
 };
 
@@ -1316,6 +2129,13 @@ onMounted(async () => {
   initTheme();
   updateCenterStore.bind();
 
+  try {
+    systemInfo.value = await window.ipcRenderer.invoke("get-system-info");
+  } catch (error: unknown) {
+    logger.warn({ err: error }, "读取系统信息失败");
+    systemInfo.value = { distro: "unknown" };
+  }
+
   // 从主进程获取启动参数（--no-apm / --no-spark），再加载数据
   storeFilter.value = await window.ipcRenderer.invoke("get-store-filter");
 
@@ -1355,6 +2175,7 @@ onMounted(async () => {
   ]).then(() => {
     // 所有数据加载完成后的回调（可选）
     logger.info("所有应用数据加载完成");
+    void maybePromptInstalledSync();
   });
 
   // 设置键盘导航
@@ -1364,7 +2185,7 @@ onMounted(async () => {
       if (e.key === "ArrowLeft") prevScreen();
       if (e.key === "ArrowRight") nextScreen();
     }
-    if (showModal.value && e.key === "Escape") {
+    if (currentView.value === "detail" && e.key === "Escape") {
       closeDetail();
     }
   });
@@ -1431,6 +2252,7 @@ onMounted(async () => {
       // 根据包名直接打开应用详情
       const tryOpen = () => {
         // 先切换到"全部应用"分类
+        currentView.value = "default";
         activeTab.value = "all";
         // 使用类似 HomeView 的方式打开应用，从两个仓库获取完整信息
         const target = apps.value.find((a) => a.pkgname === data.pkgname);
@@ -1458,6 +2280,11 @@ onMounted(async () => {
     },
   );
 
+  window.ipcRenderer.on(
+    "install-complete",
+    handleInstallCompleteForDownloadRecord,
+  );
+
   window.ipcRenderer.on(
     "remove-complete",
     (_event: IpcRendererEvent, payload: ChannelPayload) => {
@@ -1474,9 +2301,26 @@ onMounted(async () => {
 
 onUnmounted(() => {
   updateCenterStore.unbind();
+  window.ipcRenderer.off(
+    "install-complete",
+    handleInstallCompleteForDownloadRecord,
+  );
 });
 
 // 观察器
+watch(
+  () => currentUser.value?.id ?? null,
+  (userId, previousUserId) => {
+    loadInstalledSyncPreference(userId);
+    if (previousUserId !== undefined && userId !== previousUserId) {
+      syncRequestGeneration.value += 1;
+      syncLoading.value = false;
+      syncCandidateApps.value = [];
+    }
+  },
+  { immediate: true },
+);
+
 watch(themeMode, (newVal) => {
   localStorage.setItem("theme", newVal);
   window.ipcRenderer.send(
diff --git a/src/__tests__/setup.ts b/src/__tests__/setup.ts
index 48ed77ed..681eafc6 100644
--- a/src/__tests__/setup.ts
+++ b/src/__tests__/setup.ts
@@ -20,11 +20,13 @@ Object.defineProperty(window, "ipcRenderer", {
     invoke: vi.fn(),
     removeListener: vi.fn(),
   },
+  writable: true,
 });
 
 // Mock window.apm_store
 Object.defineProperty(window, "apm_store", {
   value: {
-    arch: "amd64-store",
+    arch: "amd64",
   },
+  writable: true,
 });
diff --git a/src/__tests__/unit/App.account-placeholders.test.ts b/src/__tests__/unit/App.account-placeholders.test.ts
new file mode 100644
index 00000000..caadeb39
--- /dev/null
+++ b/src/__tests__/unit/App.account-placeholders.test.ts
@@ -0,0 +1,773 @@
+import {
+  fireEvent,
+  render,
+  screen,
+  waitFor,
+  within,
+} from "@testing-library/vue";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import App from "@/App.vue";
+import {
+  fetchSyncedAppList,
+  listDownloadedApps,
+  listFavoriteFolders,
+  uploadSyncedAppList,
+} from "@/modules/backendApi";
+import { setAuthSession } from "@/global/authState";
+import type {
+  DownloadedAppList,
+  FavoriteFolder,
+  FavoriteItem,
+  SyncedAppList,
+} from "@/global/typedefinition";
+
+const invoke = vi.fn();
+
+const favoriteFolders: FavoriteFolder[] = [
+  {
+    id: 7,
+    name: "默认收藏夹",
+    itemCount: 1,
+    createdAt: "2026-05-18T00:00:00Z",
+    updatedAt: "2026-05-18T00:00:00Z",
+  },
+];
+
+const favoriteItems: FavoriteItem[] = [
+  {
+    id: 11,
+    appKey: "app:office:wps",
+    pkgname: "wps",
+    name: "WPS",
+    category: "office",
+    iconUrl: "",
+    createdAt: "2026-05-18T00:00:00Z",
+  },
+];
+
+const createDeferred = <T>() => {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((promiseResolve) => {
+    resolve = promiseResolve;
+  });
+
+  return { promise, resolve };
+};
+
+const downloadedList = (
+  items: DownloadedAppList["items"],
+): DownloadedAppList => ({
+  items,
+  total: items.length,
+  page: 1,
+  pageSize: 50,
+});
+
+const syncedList = (items: SyncedAppList["items"]): SyncedAppList => ({
+  snapshotName: "默认列表",
+  clientArch: "amd64",
+  distro: "deepin 25",
+  updatedAt: "2026-05-18T00:00:00Z",
+  items,
+});
+
+const setSecondUserSession = () => {
+  setAuthSession({
+    accessToken: "backend-token-b",
+    tokenType: "bearer",
+    user: {
+      id: 2,
+      flarumUserId: "84",
+      username: "second",
+      displayName: "Second User",
+      avatarUrl: "https://bbs.spark-app.store/avatar-b.png",
+      forumLevel: "用户",
+      forumGroups: ["用户"],
+    },
+  });
+};
+
+vi.mock("axios", () => {
+  const get = vi.fn(async (url: string) => {
+    if (url.includes("categories.json")) {
+      return { data: { office: { zh: "办公" } } };
+    }
+    if (url.includes("/office/applist.json")) {
+      return {
+        data: [
+          {
+            Name: "WPS",
+            Pkgname: "wps",
+            Version: "1.0.0",
+            Filename: "wps_1.0.0_amd64.deb",
+            Torrent_address: "",
+            Author: "",
+            Contributor: "",
+            Website: "",
+            Update: "",
+            Size: "",
+            More: "",
+            Tags: "",
+            img_urls: [],
+            icons: "",
+          },
+        ],
+      };
+    }
+    return { data: [] };
+  });
+  const post = vi.fn(async () => ({ data: { ok: true } }));
+
+  return {
+    default: {
+      create: () => ({ get, post }),
+    },
+  };
+});
+
+vi.mock("@/modules/updateCenter", () => ({
+  createUpdateCenterStore: () => ({
+    isOpen: { value: false },
+    showCloseConfirm: { value: false },
+    showMigrationConfirm: { value: false },
+    searchQuery: { value: "" },
+    selectedTaskKeys: { value: new Set<string>() },
+    snapshot: {
+      value: { items: [], tasks: [], warnings: [], hasRunningTasks: false },
+    },
+    filteredItems: { value: [] },
+    allSelected: { value: false },
+    someSelected: { value: false },
+    bind: vi.fn(),
+    unbind: vi.fn(),
+    open: vi.fn(),
+    refresh: vi.fn(),
+    ignoreItem: vi.fn(),
+    unignoreItem: vi.fn(),
+    toggleSelection: vi.fn(),
+    toggleSelectAll: vi.fn(),
+    getSelectedItems: vi.fn(() => []),
+    closeNow: vi.fn(),
+    startSelected: vi.fn(),
+    requestClose: vi.fn(),
+  }),
+}));
+
+vi.mock("@/modules/backendApi", () => ({
+  addFavoriteItem: vi.fn(),
+  bulkDeleteFavoriteItems: vi.fn(),
+  createFavoriteFolder: vi.fn(),
+  exchangeFlarumToken: vi.fn(),
+  fetchSyncedAppList: vi.fn(async () => null),
+  listDownloadedApps: vi.fn(async () => downloadedList([])),
+  listFavoriteFolders: vi.fn(async () => favoriteFolders),
+  listFavoriteItems: vi.fn(async () => favoriteItems),
+  uploadSyncedAppList: vi.fn(),
+  setBackendToken: vi.fn(),
+}));
+
+describe("App account placeholders", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    invoke.mockReset();
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "both";
+      if (channel === "check-spark-available") return true;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      return [];
+    });
+
+    Object.assign(window.ipcRenderer, {
+      invoke,
+      on: vi.fn(),
+      off: vi.fn(),
+      send: vi.fn(),
+    });
+
+    window.apm_store.arch = "amd64";
+    localStorage.clear();
+    setAuthSession({
+      accessToken: "backend-token",
+      tokenType: "bearer",
+      user: {
+        id: 1,
+        flarumUserId: "42",
+        username: "momen",
+        displayName: "Momen",
+        avatarUrl: "https://bbs.spark-app.store/avatar.png",
+        forumLevel: "管理员",
+        forumGroups: ["管理员"],
+      },
+    });
+
+    vi.stubGlobal(
+      "matchMedia",
+      vi.fn(() => ({
+        matches: false,
+        addEventListener: vi.fn(),
+        removeEventListener: vi.fn(),
+      })),
+    );
+    vi.stubGlobal("scrollTo", vi.fn());
+    class MockIntersectionObserver {
+      observe = vi.fn();
+      disconnect = vi.fn();
+      unobserve = vi.fn();
+    }
+    vi.stubGlobal("IntersectionObserver", MockIntersectionObserver);
+  });
+
+  it("shows the user management placeholder from the logged-in quick menu", async () => {
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("用户管理"));
+
+    expect(
+      await screen.findByRole("heading", { name: "用户管理" }),
+    ).toBeTruthy();
+    expect(screen.queryByText("请登录后查看和管理账号信息。")).toBeNull();
+  });
+
+  it("shows the favorites placeholder from the logged-in quick menu", async () => {
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    await fireEvent.click(screen.getByText("我的收藏"));
+
+    expect(
+      await screen.findByRole("heading", { name: "我的收藏" }),
+    ).toBeTruthy();
+    expect(screen.queryByText("请登录后查看我的收藏。")).toBeNull();
+  });
+
+  it("refreshes installed apps before resolving favorite management state", async () => {
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "both";
+      if (channel === "check-spark-available") return true;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "list-installed") {
+        return {
+          success: true,
+          apps: [
+            {
+              pkgname: "wps",
+              name: "WPS",
+              version: "1.0.0",
+              arch: "amd64",
+              flags: "installed",
+              origin: "apm",
+            },
+          ],
+        };
+      }
+      return [];
+    });
+    render(App);
+
+    await waitFor(() => {
+      expect(screen.getByText("2")).toBeTruthy();
+    });
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("我的收藏"));
+
+    expect(
+      await screen.findByRole("heading", { name: "我的收藏" }),
+    ).toBeTruthy();
+    expect(await screen.findByText("已安装")).toBeTruthy();
+    expect(invoke).toHaveBeenCalledWith("list-installed", {
+      origin: "apm",
+      pkgnameList: undefined,
+    });
+  });
+
+  it("refreshes Spark installed state for favorites in both mode", async () => {
+    invoke.mockImplementation(async (channel: string, payload?: unknown) => {
+      if (channel === "get-store-filter") return "both";
+      if (channel === "check-spark-available") return true;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "list-installed") {
+        const request = payload as { origin?: string };
+        if (request.origin === "spark") {
+          return {
+            success: true,
+            apps: [
+              {
+                pkgname: "wps",
+                name: "WPS",
+                version: "1.0.0",
+                arch: "amd64",
+                flags: "installed",
+                origin: "spark",
+              },
+            ],
+          };
+        }
+        return { success: true, apps: [] };
+      }
+      return [];
+    });
+    render(App);
+
+    await waitFor(() => {
+      expect(screen.getByText("2")).toBeTruthy();
+    });
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("我的收藏"));
+
+    expect(
+      await screen.findByRole("heading", { name: "我的收藏" }),
+    ).toBeTruthy();
+    expect(await screen.findByText("已安装")).toBeTruthy();
+    expect(invoke).toHaveBeenCalledWith("list-installed", {
+      origin: "spark",
+      pkgnameList: ["wps"],
+    });
+  });
+
+  it("clears favorite data and leaves protected favorites view after logout", async () => {
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("我的收藏"));
+
+    expect(
+      await screen.findByRole("heading", { name: "我的收藏" }),
+    ).toBeTruthy();
+    expect(await screen.findByText("默认收藏夹 (1)")).toBeTruthy();
+    expect(await screen.findByText("wps · office")).toBeTruthy();
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    if (!screen.queryByText("退出登录")) {
+      await fireEvent.click(
+        await screen.findByRole("button", { name: /^Momen$/ }),
+      );
+    }
+    await fireEvent.click(screen.getByText("退出登录"));
+
+    await waitFor(() => {
+      expect(screen.getByRole("button", { name: "登录 / 注册" })).toBeTruthy();
+    });
+    expect(screen.queryByText("默认收藏夹 (1)")).toBeNull();
+    expect(screen.queryByText("wps · office")).toBeNull();
+    expect(screen.queryByRole("heading", { name: "我的收藏" })).toBeNull();
+  });
+
+  it("does not reopen the favorite selector when folder loading resolves after logout", async () => {
+    const slowFolders = createDeferred<FavoriteFolder[]>();
+    vi.mocked(listFavoriteFolders).mockReturnValueOnce(slowFolders.promise);
+    render(App);
+
+    await fireEvent.click(await screen.findByText("全部应用"));
+    await fireEvent.click(await screen.findByText("wps · 1.0.0"));
+    expect(await screen.findByRole("heading", { name: "WPS" })).toBeTruthy();
+    await fireEvent.click(screen.getByRole("button", { name: "收藏" }));
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    if (!screen.queryByText("退出登录")) {
+      await fireEvent.click(
+        await screen.findByRole("button", { name: /^Momen$/ }),
+      );
+    }
+    await fireEvent.click(screen.getByText("退出登录"));
+
+    await waitFor(() => {
+      expect(screen.getByRole("button", { name: "登录 / 注册" })).toBeTruthy();
+    });
+
+    slowFolders.resolve([
+      {
+        id: 42,
+        name: "旧账号收藏夹",
+        itemCount: 1,
+        createdAt: "2026-05-18T00:00:00Z",
+        updatedAt: "2026-05-18T00:00:00Z",
+      },
+    ]);
+    await slowFolders.promise;
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(screen.queryByText("旧账号收藏夹 (1)")).toBeNull();
+    expect(screen.queryByText("wps · office")).toBeNull();
+    expect(screen.queryByText("旧账号收藏夹")).toBeNull();
+    expect(screen.queryByRole("dialog", { name: "选择收藏夹" })).toBeNull();
+  });
+
+  it("ignores downloaded history that resolves after switching users", async () => {
+    const firstHistory = createDeferred<DownloadedAppList>();
+    const secondHistory = createDeferred<DownloadedAppList>();
+    vi.mocked(listDownloadedApps)
+      .mockReturnValueOnce(firstHistory.promise)
+      .mockReturnValueOnce(secondHistory.promise);
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("用户管理"));
+    expect(await screen.findByText("正在加载下载历史...")).toBeTruthy();
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    if (!screen.queryByText("退出登录")) {
+      await fireEvent.click(
+        await screen.findByRole("button", { name: /^Momen$/ }),
+      );
+    }
+    await fireEvent.click(screen.getByText("退出登录"));
+    setSecondUserSession();
+
+    const secondUserButton = await screen.findByRole("button", {
+      name: /^Second User$/,
+    });
+    if (!screen.queryByText("用户管理")) {
+      await fireEvent.click(secondUserButton);
+    }
+    await fireEvent.click(await screen.findByText("用户管理"));
+    secondHistory.resolve(downloadedList([]));
+    expect(await screen.findByText("暂无下载记录。")).toBeTruthy();
+
+    firstHistory.resolve(
+      downloadedList([
+        {
+          id: 77,
+          appKey: "app:office:old-account-app",
+          pkgname: "old-account-app",
+          name: "旧账号应用",
+          category: "office",
+          selectedOrigin: "apm",
+          version: "1.0.0",
+          packageArch: "amd64",
+          downloadedAt: "2026-05-18T00:00:00Z",
+        },
+      ]),
+    );
+    await firstHistory.promise;
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(screen.queryByText("旧账号应用")).toBeNull();
+    expect(screen.getByText("暂无下载记录。")).toBeTruthy();
+  });
+
+  it("ignores older downloaded history refreshes for the same user", async () => {
+    const firstHistory = createDeferred<DownloadedAppList>();
+    const secondHistory = createDeferred<DownloadedAppList>();
+    vi.mocked(listDownloadedApps)
+      .mockReturnValueOnce(firstHistory.promise)
+      .mockReturnValueOnce(secondHistory.promise);
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("用户管理"));
+    await fireEvent.click(screen.getByRole("button", { name: "刷新" }));
+
+    secondHistory.resolve(
+      downloadedList([
+        {
+          id: 88,
+          appKey: "app:office:new-app",
+          pkgname: "new-app",
+          name: "新下载应用",
+          category: "office",
+          selectedOrigin: "apm",
+          version: "2.0.0",
+          packageArch: "amd64",
+          downloadedAt: "2026-05-18T00:00:00Z",
+        },
+      ]),
+    );
+    expect(await screen.findByText("新下载应用")).toBeTruthy();
+
+    firstHistory.resolve(
+      downloadedList([
+        {
+          id: 77,
+          appKey: "app:office:old-app",
+          pkgname: "old-app",
+          name: "旧下载应用",
+          category: "office",
+          selectedOrigin: "apm",
+          version: "1.0.0",
+          packageArch: "amd64",
+          downloadedAt: "2026-05-18T00:00:00Z",
+        },
+      ]),
+    );
+    await firstHistory.promise;
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(screen.queryByText("旧下载应用")).toBeNull();
+    expect(screen.getByText("新下载应用")).toBeTruthy();
+  });
+
+  it("ignores older favorite folder refreshes for the same user", async () => {
+    const firstFolders = createDeferred<FavoriteFolder[]>();
+    const secondFolders = createDeferred<FavoriteFolder[]>();
+    vi.mocked(listFavoriteFolders)
+      .mockReturnValueOnce(firstFolders.promise)
+      .mockReturnValueOnce(secondFolders.promise);
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    await fireEvent.click(screen.getByRole("button", { name: "我的收藏" }));
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    if (!screen.queryByRole("button", { name: "我的收藏" })) {
+      await fireEvent.click(
+        await screen.findByRole("button", { name: /^Momen$/ }),
+      );
+    }
+    await fireEvent.click(screen.getByRole("button", { name: "我的收藏" }));
+
+    secondFolders.resolve([
+      {
+        id: 42,
+        name: "新收藏夹",
+        itemCount: 0,
+        createdAt: "2026-05-18T00:00:00Z",
+        updatedAt: "2026-05-18T00:00:00Z",
+      },
+    ]);
+    expect(await screen.findByText("新收藏夹 (0)")).toBeTruthy();
+
+    firstFolders.resolve([
+      {
+        id: 41,
+        name: "旧收藏夹",
+        itemCount: 0,
+        createdAt: "2026-05-18T00:00:00Z",
+        updatedAt: "2026-05-18T00:00:00Z",
+      },
+    ]);
+    await firstFolders.promise;
+    await Promise.resolve();
+    await Promise.resolve();
+
+    expect(screen.queryByText("旧收藏夹 (0)")).toBeNull();
+    expect(screen.getByText("新收藏夹 (0)")).toBeTruthy();
+  });
+
+  it("restores cloud apps by origin and package when category changed", async () => {
+    vi.mocked(fetchSyncedAppList).mockResolvedValueOnce({
+      snapshotName: "默认列表",
+      clientArch: "amd64",
+      distro: "deepin 25",
+      updatedAt: "2026-05-18T00:00:00Z",
+      items: [
+        {
+          pkgname: "wps",
+          origin: "apm",
+          category: "legacy-office",
+          version: "1.0.0",
+          packageArch: "amd64",
+          appName: "WPS Cloud",
+          iconUrl: "",
+        },
+      ],
+    });
+    invoke.mockImplementation(async (channel: string, payload?: unknown) => {
+      if (channel === "get-store-filter") return "apm";
+      if (channel === "check-spark-available") return false;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "check-installed") return false;
+      if (channel === "list-installed") {
+        const request = payload as { origin?: string };
+        if (request.origin === "apm") return { success: true, apps: [] };
+      }
+      return [];
+    });
+    render(App);
+
+    await fireEvent.click(await screen.findByText("应用管理"));
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /从账号恢复/ }),
+    );
+    await fireEvent.click(await screen.findByLabelText("WPS Cloud"));
+    await fireEvent.click(screen.getByRole("button", { name: "加入安装队列" }));
+
+    await waitFor(() => {
+      expect(window.ipcRenderer.send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+  });
+
+  it("keeps the installed modal scoped to the active origin after sync", async () => {
+    invoke.mockImplementation(async (channel: string, payload?: unknown) => {
+      if (channel === "get-store-filter") return "both";
+      if (channel === "check-spark-available") return true;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "list-installed") {
+        const request = payload as { origin?: string };
+        if (request.origin === "spark") {
+          return {
+            success: true,
+            apps: [
+              {
+                pkgname: "wps",
+                name: "WPS",
+                version: "1.0.0",
+                arch: "amd64",
+                flags: "installed",
+                origin: "spark",
+              },
+            ],
+          };
+        }
+        return { success: true, apps: [] };
+      }
+      return [];
+    });
+    vi.mocked(uploadSyncedAppList).mockResolvedValueOnce(syncedList([]));
+    render(App);
+
+    await fireEvent.click(await screen.findByText("应用管理"));
+    const modal = screen.getByText("已安装应用").closest(".fixed");
+    if (!(modal instanceof HTMLElement)) throw new Error("modal not found");
+    expect(within(modal).getByText("暂无已安装应用")).toBeTruthy();
+
+    await fireEvent.click(
+      within(modal).getByRole("button", { name: /同步到账号/ }),
+    );
+
+    await waitFor(() => {
+      expect(uploadSyncedAppList).toHaveBeenCalled();
+    });
+    expect(within(modal).queryByText("WPS")).toBeNull();
+    expect(within(modal).getByText("暂无已安装应用")).toBeTruthy();
+  });
+
+  it("ignores overlapping installed sync requests", async () => {
+    const syncUpload = createDeferred<SyncedAppList>();
+    vi.mocked(uploadSyncedAppList).mockReturnValue(syncUpload.promise);
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "apm";
+      if (channel === "check-spark-available") return false;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "list-installed") return { success: true, apps: [] };
+      return [];
+    });
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("用户管理"));
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "立即同步" }),
+    );
+    await fireEvent.click(screen.getByRole("button", { name: "立即同步" }));
+
+    await waitFor(() => {
+      expect(uploadSyncedAppList).toHaveBeenCalledTimes(1);
+    });
+    syncUpload.resolve(syncedList([]));
+  });
+
+  it("does not upload stale sync candidates after logout", async () => {
+    const slowInstalled = createDeferred<{
+      success: true;
+      apps: Array<{
+        pkgname: string;
+        name: string;
+        version: string;
+        arch: string;
+        flags: string;
+        origin: "apm";
+      }>;
+    }>();
+    let listInstalledCalls = 0;
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "apm";
+      if (channel === "check-spark-available") return false;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "list-installed") {
+        listInstalledCalls += 1;
+        if (listInstalledCalls === 1) return slowInstalled.promise;
+        return { success: true, apps: [] };
+      }
+      return [];
+    });
+    vi.mocked(uploadSyncedAppList).mockResolvedValue(syncedList([]));
+    render(App);
+
+    await fireEvent.click(await screen.findByRole("button", { name: /Momen/ }));
+    await fireEvent.click(screen.getByText("用户管理"));
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "立即同步" }),
+    );
+    await fireEvent.click(
+      await screen.findByRole("button", { name: /^Momen$/ }),
+    );
+    if (!screen.queryByText("退出登录")) {
+      await fireEvent.click(
+        await screen.findByRole("button", { name: /^Momen$/ }),
+      );
+    }
+    await fireEvent.click(screen.getByText("退出登录"));
+
+    slowInstalled.resolve({
+      success: true,
+      apps: [
+        {
+          pkgname: "wps",
+          name: "WPS",
+          version: "1.0.0",
+          arch: "amd64",
+          flags: "installed",
+          origin: "apm",
+        },
+      ],
+    });
+    await slowInstalled.promise;
+    await Promise.resolve();
+
+    setSecondUserSession();
+    const secondUserButton = await screen.findByRole("button", {
+      name: /^Second User$/,
+    });
+    if (!screen.queryByText("用户管理")) {
+      await fireEvent.click(secondUserButton);
+    }
+    await fireEvent.click(await screen.findByText("用户管理"));
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "立即同步" }),
+    );
+
+    await waitFor(() => {
+      expect(uploadSyncedAppList).toHaveBeenCalledWith(
+        expect.objectContaining({ items: [] }),
+      );
+    });
+    const uploadedItemNames = vi
+      .mocked(uploadSyncedAppList)
+      .mock.calls.flatMap(([payload]) =>
+        payload.items.map((item) => item.pkgname),
+      );
+    expect(uploadedItemNames).not.toContain("wps");
+  });
+});
diff --git a/src/__tests__/unit/App.download-records.test.ts b/src/__tests__/unit/App.download-records.test.ts
new file mode 100644
index 00000000..00756522
--- /dev/null
+++ b/src/__tests__/unit/App.download-records.test.ts
@@ -0,0 +1,452 @@
+import {
+  cleanup,
+  fireEvent,
+  render,
+  screen,
+  waitFor,
+} from "@testing-library/vue";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+import App from "@/App.vue";
+import { recordDownloadedApp } from "@/modules/backendApi";
+import { setAuthSession } from "@/global/authState";
+import { downloads } from "@/global/downloadStatus";
+import type { DownloadResult } from "@/global/typedefinition";
+
+const invoke = vi.fn();
+const send = vi.fn();
+const ipcHandlers = new Map<string, (...args: unknown[]) => void>();
+
+const setSecondUserSession = () => {
+  setAuthSession({
+    accessToken: "backend-token-b",
+    tokenType: "bearer",
+    user: {
+      id: 2,
+      flarumUserId: "84",
+      username: "second",
+      displayName: "Second User",
+      avatarUrl: "https://bbs.spark-app.store/avatar-b.png",
+      forumLevel: "用户",
+      forumGroups: ["用户"],
+    },
+  });
+};
+
+const setInitialUserSession = () => {
+  setAuthSession({
+    accessToken: "backend-token",
+    tokenType: "bearer",
+    user: {
+      id: 1,
+      flarumUserId: "42",
+      username: "momen",
+      displayName: "Momen",
+      avatarUrl: "https://bbs.spark-app.store/avatar.png",
+      forumLevel: "管理员",
+      forumGroups: ["管理员"],
+    },
+  });
+};
+
+const createControlledPromise = <T>() => {
+  let resolve!: (value: T) => void;
+  const promise = new Promise<T>((promiseResolve) => {
+    resolve = promiseResolve;
+  });
+  return { promise, resolve };
+};
+
+vi.mock("axios", () => {
+  const get = vi.fn(async (url: string) => {
+    if (url.includes("categories.json")) {
+      return { data: { office: { zh: "办公" } } };
+    }
+    if (url.includes("/office/applist.json")) {
+      return {
+        data: [
+          {
+            Name: "WPS",
+            Pkgname: "wps",
+            Version: "1.0.0",
+            Filename: "wps_1.0.0_amd64.deb",
+            Torrent_address: "",
+            Author: "",
+            Contributor: "",
+            Website: "",
+            Update: "",
+            Size: "",
+            More: "Office suite",
+            Tags: "",
+            img_urls: "[]",
+            icons: "",
+          },
+        ],
+      };
+    }
+    return { data: [] };
+  });
+  const post = vi.fn(async () => ({ data: { ok: true } }));
+
+  return {
+    default: {
+      create: () => ({ get, post }),
+    },
+  };
+});
+
+vi.mock("@/modules/updateCenter", () => ({
+  createUpdateCenterStore: () => ({
+    isOpen: { value: false },
+    showCloseConfirm: { value: false },
+    showMigrationConfirm: { value: false },
+    searchQuery: { value: "" },
+    selectedTaskKeys: { value: new Set<string>() },
+    snapshot: {
+      value: { items: [], tasks: [], warnings: [], hasRunningTasks: false },
+    },
+    filteredItems: { value: [] },
+    allSelected: { value: false },
+    someSelected: { value: false },
+    bind: vi.fn(),
+    unbind: vi.fn(),
+    open: vi.fn(),
+    refresh: vi.fn(),
+    ignoreItem: vi.fn(),
+    unignoreItem: vi.fn(),
+    toggleSelection: vi.fn(),
+    toggleSelectAll: vi.fn(),
+    getSelectedItems: vi.fn(() => []),
+    closeNow: vi.fn(),
+    startSelected: vi.fn(),
+    requestClose: vi.fn(),
+  }),
+}));
+
+vi.mock("@/modules/backendApi", () => ({
+  addFavoriteItem: vi.fn(),
+  bulkDeleteFavoriteItems: vi.fn(),
+  createFavoriteFolder: vi.fn(),
+  exchangeFlarumToken: vi.fn(),
+  listFavoriteFolders: vi.fn(async () => []),
+  listFavoriteItems: vi.fn(async () => []),
+  recordDownloadedApp: vi.fn(async () => undefined),
+  setBackendToken: vi.fn(),
+}));
+
+describe("App download records", () => {
+  afterEach(() => {
+    cleanup();
+  });
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    ipcHandlers.clear();
+    downloads.value = [];
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "apm";
+      if (channel === "check-spark-available") return false;
+      if (channel === "check-apm-available") return true;
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "list-installed") return { success: true, apps: [] };
+      if (channel === "check-installed") return false;
+      return [];
+    });
+
+    Object.assign(window.ipcRenderer, {
+      invoke,
+      send,
+      on: vi.fn((channel: string, handler: (...args: unknown[]) => void) => {
+        ipcHandlers.set(channel, handler);
+      }),
+      off: vi.fn(),
+    });
+    window.apm_store.arch = "amd64";
+    localStorage.clear();
+    setInitialUserSession();
+
+    vi.stubGlobal(
+      "matchMedia",
+      vi.fn(() => ({
+        matches: false,
+        addEventListener: vi.fn(),
+        removeEventListener: vi.fn(),
+      })),
+    );
+    vi.stubGlobal("scrollTo", vi.fn());
+    class MockIntersectionObserver {
+      observe = vi.fn();
+      disconnect = vi.fn();
+      unobserve = vi.fn();
+    }
+    vi.stubGlobal("IntersectionObserver", MockIntersectionObserver);
+  });
+
+  it("records a download only after the queued install completes successfully", async () => {
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "全部应用 1" }),
+    );
+    await fireEvent.click(await screen.findByText("WPS"));
+    await fireEvent.click(await screen.findByRole("button", { name: "安装" }));
+
+    await waitFor(() => {
+      expect(send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+    expect(recordDownloadedApp).not.toHaveBeenCalled();
+
+    const queuedPayload = vi
+      .mocked(send)
+      .mock.calls.find(
+        ([channel]) => channel === "queue-install",
+      )?.[1] as string;
+    const queuedDownload = JSON.parse(queuedPayload) as { id: number };
+    const completion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "installed",
+      success: true,
+      exitCode: 0,
+      status: "completed",
+      origin: "apm",
+    };
+
+    ipcHandlers.get("install-complete")?.({}, completion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).toHaveBeenCalledWith(
+        expect.objectContaining({
+          appKey: "app:office:wps",
+          pkgname: "wps",
+          selectedOrigin: "apm",
+        }),
+      );
+    });
+  });
+
+  it("keeps a pending download record through a failed install retry", async () => {
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "全部应用 1" }),
+    );
+    await fireEvent.click(await screen.findByText("WPS"));
+    await fireEvent.click(await screen.findByRole("button", { name: "安装" }));
+
+    await waitFor(() => {
+      expect(send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+
+    const queuedPayload = vi
+      .mocked(send)
+      .mock.calls.find(
+        ([channel]) => channel === "queue-install",
+      )?.[1] as string;
+    const queuedDownload = JSON.parse(queuedPayload) as { id: number };
+    const failedCompletion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "failed",
+      success: false,
+      exitCode: 1,
+      status: "failed",
+      origin: "apm",
+    };
+
+    ipcHandlers.get("install-complete")?.({}, failedCompletion);
+    downloads.value[0].status = "failed";
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).not.toHaveBeenCalled();
+      expect(screen.getByTitle("重试")).toBeInTheDocument();
+    });
+
+    await fireEvent.click(screen.getByTitle("重试"));
+
+    const successfulCompletion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "installed",
+      success: true,
+      exitCode: 0,
+      status: "completed",
+      origin: "apm",
+    };
+
+    ipcHandlers.get("install-complete")?.({}, successfulCompletion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).toHaveBeenCalledTimes(1);
+      expect(recordDownloadedApp).toHaveBeenCalledWith(
+        expect.objectContaining({
+          appKey: "app:office:wps",
+          pkgname: "wps",
+          name: "WPS",
+          category: "office",
+          selectedOrigin: "apm",
+          version: "1.0.0",
+        }),
+      );
+    });
+  });
+
+  it("does not record a queued install under a later logged-in user", async () => {
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "全部应用 1" }),
+    );
+    await fireEvent.click(await screen.findByText("WPS"));
+    await fireEvent.click(await screen.findByRole("button", { name: "安装" }));
+
+    await waitFor(() => {
+      expect(send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+
+    const queuedPayload = vi
+      .mocked(send)
+      .mock.calls.find(
+        ([channel]) => channel === "queue-install",
+      )?.[1] as string;
+    const queuedDownload = JSON.parse(queuedPayload) as { id: number };
+
+    await fireEvent.click(screen.getByRole("button", { name: "Momen" }));
+    await fireEvent.click(await screen.findByText("退出登录"));
+
+    setSecondUserSession();
+
+    const completion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "installed",
+      success: true,
+      exitCode: 0,
+      status: "completed",
+      origin: "apm",
+    };
+
+    ipcHandlers.get("install-complete")?.({}, completion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).not.toHaveBeenCalled();
+    });
+  });
+
+  it("does not bind a queued install to a user who logged in during the APM availability check", async () => {
+    const apmCheck = createControlledPromise<boolean>();
+    let apmCheckCalls = 0;
+    invoke.mockImplementation(async (channel: string) => {
+      if (channel === "get-store-filter") return "apm";
+      if (channel === "check-spark-available") return false;
+      if (channel === "check-apm-available") {
+        apmCheckCalls += 1;
+        return apmCheckCalls === 1 ? true : apmCheck.promise;
+      }
+      if (channel === "get-app-version") return "5.0.0";
+      if (channel === "get-system-info") return { distro: "deepin 25" };
+      if (channel === "list-installed") return { success: true, apps: [] };
+      if (channel === "check-installed") return false;
+      return [];
+    });
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "全部应用 1" }),
+    );
+    await fireEvent.click(await screen.findByText("WPS"));
+    await fireEvent.click(await screen.findByRole("button", { name: "安装" }));
+
+    await waitFor(() => {
+      expect(apmCheckCalls).toBe(2);
+    });
+    setSecondUserSession();
+    apmCheck.resolve(true);
+
+    await waitFor(() => {
+      expect(send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+
+    const queuedPayload = vi
+      .mocked(send)
+      .mock.calls.find(
+        ([channel]) => channel === "queue-install",
+      )?.[1] as string;
+    const queuedDownload = JSON.parse(queuedPayload) as { id: number };
+    const completion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "installed",
+      success: true,
+      exitCode: 0,
+      status: "completed",
+      origin: "apm",
+    };
+
+    ipcHandlers.get("install-complete")?.({}, completion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).not.toHaveBeenCalled();
+    });
+  });
+
+  it("cleans up a successful pending record even when the active user does not match", async () => {
+    render(App);
+
+    await fireEvent.click(
+      await screen.findByRole("button", { name: "全部应用 1" }),
+    );
+    await fireEvent.click(await screen.findByText("WPS"));
+    await fireEvent.click(await screen.findByRole("button", { name: "安装" }));
+
+    await waitFor(() => {
+      expect(send).toHaveBeenCalledWith(
+        "queue-install",
+        expect.stringContaining('"pkgname":"wps"'),
+      );
+    });
+
+    const queuedPayload = vi
+      .mocked(send)
+      .mock.calls.find(
+        ([channel]) => channel === "queue-install",
+      )?.[1] as string;
+    const queuedDownload = JSON.parse(queuedPayload) as { id: number };
+    const completion: DownloadResult = {
+      id: queuedDownload.id,
+      time: Date.now(),
+      message: "installed",
+      success: true,
+      exitCode: 0,
+      status: "completed",
+      origin: "apm",
+    };
+
+    setSecondUserSession();
+    ipcHandlers.get("install-complete")?.({}, completion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).not.toHaveBeenCalled();
+    });
+
+    setInitialUserSession();
+    ipcHandlers.get("install-complete")?.({}, completion);
+
+    await waitFor(() => {
+      expect(recordDownloadedApp).not.toHaveBeenCalled();
+    });
+  });
+});
diff --git a/src/__tests__/unit/AppDetailPage.test.ts b/src/__tests__/unit/AppDetailPage.test.ts
new file mode 100644
index 00000000..f52f5fa7
--- /dev/null
+++ b/src/__tests__/unit/AppDetailPage.test.ts
@@ -0,0 +1,153 @@
+import { fireEvent, render, screen } from "@testing-library/vue";
+import { describe, expect, it, vi } from "vitest";
+
+import AppDetailPage from "@/components/AppDetailPage.vue";
+import type { App, ReviewTags } from "@/global/typedefinition";
+
+vi.mock("@/components/ReviewsPanel.vue", () => ({
+  default: {
+    name: "ReviewsPanel",
+    props: ["appKey", "tags", "loggedIn"],
+    template:
+      '<div data-testid="reviews-panel" :data-app-key="appKey" :data-origin="tags.origin" :data-version="tags.version"></div>',
+  },
+}));
+
+const app: App = {
+  name: "WPS",
+  pkgname: "wps",
+  version: "1.0.0",
+  filename: "wps_1.0.0_amd64.deb",
+  torrent_address: "",
+  author: "",
+  contributor: "",
+  website: "",
+  update: "",
+  size: "110M",
+  more: "Office suite",
+  tags: "office",
+  img_urls: [],
+  icons: "",
+  category: "office",
+  origin: "apm",
+  currentStatus: "not-installed",
+};
+
+const sparkApp: App = {
+  ...app,
+  name: "WPS Spark",
+  version: "2.0.0",
+  filename: "wps_2.0.0_amd64.deb",
+  origin: "spark",
+};
+
+const apmApp: App = {
+  ...app,
+  name: "WPS APM",
+  version: "1.0.0",
+  filename: "wps_1.0.0_amd64.deb",
+  origin: "apm",
+};
+
+const mergedApp: App = {
+  ...sparkApp,
+  isMerged: true,
+  sparkApp,
+  apmApp,
+  viewingOrigin: "spark",
+};
+
+const sparkTags: ReviewTags = {
+  origin: "spark",
+  category: "office",
+  pkgname: "wps",
+  version: "2.0.0",
+  packageArch: "amd64",
+  clientArch: "amd64",
+  distro: "deepin 25",
+};
+
+describe("AppDetailPage", () => {
+  it("renders as page, emits back, and gates favorite for anonymous users", async () => {
+    const rendered = render(AppDetailPage, {
+      props: {
+        app,
+        screenshots: [],
+        sparkInstalled: false,
+        apmInstalled: false,
+        loggedIn: false,
+        reviewAppKey: "apm:amd64-apm:office:wps",
+        reviewTags: null,
+      },
+    });
+
+    expect(screen.getByText("Office suite")).toBeTruthy();
+    await fireEvent.click(screen.getByRole("button", { name: "返回" }));
+    await fireEvent.click(screen.getByRole("button", { name: "收藏" }));
+
+    expect(rendered.emitted("back")).toHaveLength(1);
+    expect(rendered.emitted("request-login")?.[0]?.[0]).toBe(
+      "收藏应用需要登录星火账号。",
+    );
+  });
+
+  it("gates reviews for anonymous users", async () => {
+    const rendered = render(AppDetailPage, {
+      props: {
+        app,
+        screenshots: [],
+        sparkInstalled: false,
+        apmInstalled: false,
+        loggedIn: false,
+        reviewAppKey: "apm:amd64-apm:office:wps",
+        reviewTags: sparkTags,
+      },
+    });
+
+    expect(screen.queryByTestId("reviews-panel")).toBeNull();
+    await fireEvent.click(
+      screen.getByRole("button", { name: "登录后查看评价" }),
+    );
+    expect(rendered.emitted("request-login")?.[0]?.[0]).toBe(
+      "登录后查看和发表评论。",
+    );
+  });
+
+  it("updates review identity when switching a merged app origin", async () => {
+    render(AppDetailPage, {
+      props: {
+        app: mergedApp,
+        screenshots: [],
+        sparkInstalled: false,
+        apmInstalled: false,
+        loggedIn: true,
+        reviewAppKey: "spark:amd64-store:office:wps",
+        reviewTags: sparkTags,
+      },
+    });
+
+    expect(screen.getByTestId("reviews-panel")).toHaveAttribute(
+      "data-app-key",
+      "spark:amd64-store:office:wps",
+    );
+    expect(screen.getByTestId("reviews-panel")).toHaveAttribute(
+      "data-origin",
+      "spark",
+    );
+
+    await fireEvent.click(screen.getByRole("button", { name: "APM" }));
+
+    expect(screen.getByTestId("reviews-panel")).toHaveAttribute(
+      "data-app-key",
+      "apm:amd64-apm:office:wps",
+    );
+    expect(screen.getByTestId("reviews-panel")).toHaveAttribute(
+      "data-origin",
+      "apm",
+    );
+    expect(screen.getByTestId("reviews-panel")).toHaveAttribute(
+      "data-version",
+      "1.0.0",
+    );
+  });
+});
diff --git a/src/__tests__/unit/AppListRestoreModal.test.ts b/src/__tests__/unit/AppListRestoreModal.test.ts
new file mode 100644
index 00000000..b65098b2
--- /dev/null
+++ b/src/__tests__/unit/AppListRestoreModal.test.ts
@@ -0,0 +1,75 @@
+import { fireEvent, render, screen } from "@testing-library/vue";
+import { describe, expect, it } from "vitest";
+
+import AppListRestoreModal from "@/components/AppListRestoreModal.vue";
+import type { SyncedAppListItem } from "@/global/typedefinition";
+
+const createItem = (
+  overrides: Partial<SyncedAppListItem> = {},
+): SyncedAppListItem => ({
+  pkgname: "spark-notes",
+  origin: "spark",
+  category: "office",
+  version: "1.0.0",
+  packageArch: "amd64",
+  appName: "Spark Notes",
+  iconUrl: "",
+  ...overrides,
+});
+
+describe("AppListRestoreModal", () => {
+  it("emits selected installable cloud items", async () => {
+    const rendered = render(AppListRestoreModal, {
+      props: {
+        show: true,
+        loading: false,
+        error: "",
+        items: [
+          createItem(),
+          createItem({ pkgname: "amber-ce", appName: "Amber CE" }),
+        ],
+        installedKeys: new Set<string>(),
+      },
+    });
+
+    await fireEvent.click(screen.getByLabelText("Spark Notes"));
+    await fireEvent.click(screen.getByRole("button", { name: "加入安装队列" }));
+
+    expect(rendered.emitted("install-selected")?.[0]?.[0]).toEqual([
+      expect.objectContaining({ pkgname: "spark-notes" }),
+    ]);
+  });
+
+  it("disables already installed cloud items", () => {
+    render(AppListRestoreModal, {
+      props: {
+        show: true,
+        loading: false,
+        error: "",
+        items: [createItem()],
+        installedKeys: new Set(["spark:spark-notes"]),
+      },
+    });
+
+    expect(screen.getByLabelText("Spark Notes")).toBeDisabled();
+    expect(screen.getByText("已安装")).toBeTruthy();
+  });
+
+  it("removes selected items when they become installed", async () => {
+    const rendered = render(AppListRestoreModal, {
+      props: {
+        show: true,
+        loading: false,
+        error: "",
+        items: [createItem()],
+        installedKeys: new Set<string>(),
+      },
+    });
+
+    await fireEvent.click(screen.getByLabelText("Spark Notes"));
+    await rendered.rerender({ installedKeys: new Set(["spark:spark-notes"]) });
+
+    expect(screen.getByLabelText("Spark Notes")).toBeDisabled();
+    expect(screen.getByRole("button", { name: "加入安装队列" })).toBeDisabled();
+  });
+});
diff --git a/src/__tests__/unit/AppSidebar.account.test.ts b/src/__tests__/unit/AppSidebar.account.test.ts
new file mode 100644
index 00000000..a1d79f34
--- /dev/null
+++ b/src/__tests__/unit/AppSidebar.account.test.ts
@@ -0,0 +1,48 @@
+import { fireEvent, render, screen } from "@testing-library/vue";
+import { describe, expect, it } from "vitest";
+
+import AppSidebar from "@/components/AppSidebar.vue";
+import type { SparkUser } from "@/global/typedefinition";
+
+const baseProps = {
+  activeTab: "all",
+  categoryCounts: { all: 0 },
+  themeMode: "auto" as const,
+  storeFilter: "both" as const,
+  sparkAvailable: true,
+  apmAvailable: true,
+  sidebarEntries: [],
+  entryCounts: {},
+};
+
+const user: SparkUser = {
+  id: 1,
+  flarumUserId: "123",
+  username: "momen",
+  displayName: "Momen",
+  avatarUrl: "https://bbs.spark-app.store/avatar.png",
+  forumLevel: "管理员",
+  forumGroups: ["管理员"],
+};
+
+describe("AppSidebar account entry", () => {
+  it("prompts login when anonymous", async () => {
+    const rendered = render(AppSidebar, {
+      props: { ...baseProps, currentUser: null },
+    });
+
+    await fireEvent.click(screen.getByRole("button", { name: /登录 \/ 注册/ }));
+
+    expect(rendered.emitted("request-login")).toHaveLength(1);
+  });
+
+  it("opens quick menu for logged-in users", async () => {
+    render(AppSidebar, { props: { ...baseProps, currentUser: user } });
+
+    await fireEvent.click(screen.getByRole("button", { name: /Momen/ }));
+
+    expect(screen.getByText("用户管理")).toBeTruthy();
+    expect(screen.getByText("我的收藏")).toBeTruthy();
+    expect(screen.getByText("退出登录")).toBeTruthy();
+  });
+});
diff --git a/src/__tests__/unit/AppSidebar.test.ts b/src/__tests__/unit/AppSidebar.test.ts
index f861add1..1a25e3bc 100644
--- a/src/__tests__/unit/AppSidebar.test.ts
+++ b/src/__tests__/unit/AppSidebar.test.ts
@@ -16,6 +16,7 @@ const renderSidebar = (
       apmAvailable: true,
       sidebarEntries: [],
       entryCounts: {},
+      currentUser: null,
       ...overrides,
     },
   });
diff --git a/src/__tests__/unit/FavoriteFolderManager.test.ts b/src/__tests__/unit/FavoriteFolderManager.test.ts
new file mode 100644
index 00000000..2e588ece
--- /dev/null
+++ b/src/__tests__/unit/FavoriteFolderManager.test.ts
@@ -0,0 +1,51 @@
+import { fireEvent, render, screen } from "@testing-library/vue";
+import { describe, expect, it } from "vitest";
+
+import FavoriteFolderManager from "@/components/FavoriteFolderManager.vue";
+import type {
+  FavoriteFolder,
+  ResolvedFavoriteItem,
+} from "@/global/typedefinition";
+
+const folder: FavoriteFolder = {
+  id: 1,
+  name: "默认收藏夹",
+  itemCount: 1,
+  createdAt: "2026-05-18T00:00:00Z",
+  updatedAt: "2026-05-18T00:00:00Z",
+};
+
+const item: ResolvedFavoriteItem = {
+  item: {
+    id: 2,
+    appKey: "app:office:wps",
+    pkgname: "wps",
+    name: "WPS",
+    category: "office",
+    iconUrl: "",
+    createdAt: "2026-05-18T00:00:00Z",
+  },
+  status: "downlisted",
+  reason: "已下架",
+  selectedApp: null,
+};
+
+describe("FavoriteFolderManager", () => {
+  it("shows downlisted favorites and emits bulk delete", async () => {
+    const rendered = render(FavoriteFolderManager, {
+      props: {
+        folders: [folder],
+        activeFolderId: 1,
+        items: [item],
+        loading: false,
+        error: "",
+      },
+    });
+
+    expect(screen.getByText("已下架")).toBeTruthy();
+    await fireEvent.click(screen.getByLabelText("选择 WPS"));
+    await fireEvent.click(screen.getByRole("button", { name: "移除选中" }));
+
+    expect(rendered.emitted("remove-selected")?.[0]?.[0]).toEqual([2]);
+  });
+});
diff --git a/src/__tests__/unit/InstalledAppsModal.test.ts b/src/__tests__/unit/InstalledAppsModal.test.ts
index 5236fd44..bbd5f136 100644
--- a/src/__tests__/unit/InstalledAppsModal.test.ts
+++ b/src/__tests__/unit/InstalledAppsModal.test.ts
@@ -37,6 +37,8 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
@@ -57,6 +59,8 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
@@ -75,6 +79,8 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
@@ -97,6 +103,8 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
@@ -119,6 +127,8 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
@@ -136,9 +146,75 @@ describe("InstalledAppsModal", () => {
         storeFilter: "both",
         sparkAvailable: true,
         apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
       },
     });
 
     expect(screen.queryByRole("button", { name: "查看详情" })).toBeNull();
   });
+
+  it("requests login for cloud actions when logged out", async () => {
+    const rendered = render(InstalledAppsModal, {
+      props: {
+        show: true,
+        apps: [],
+        loading: false,
+        error: "",
+        activeOrigin: "spark",
+        storeFilter: "both",
+        sparkAvailable: true,
+        apmAvailable: true,
+        loggedIn: false,
+        syncing: false,
+      },
+    });
+
+    await fireEvent.click(screen.getByRole("button", { name: "同步到账号" }));
+    await fireEvent.click(screen.getByRole("button", { name: "从账号恢复" }));
+
+    expect(rendered.emitted("request-login")).toHaveLength(2);
+  });
+
+  it("emits cloud sync and restore events when logged in", async () => {
+    const rendered = render(InstalledAppsModal, {
+      props: {
+        show: true,
+        apps: [],
+        loading: false,
+        error: "",
+        activeOrigin: "spark",
+        storeFilter: "both",
+        sparkAvailable: true,
+        apmAvailable: true,
+        loggedIn: true,
+        syncing: false,
+      },
+    });
+
+    await fireEvent.click(screen.getByRole("button", { name: "同步到账号" }));
+    await fireEvent.click(screen.getByRole("button", { name: "从账号恢复" }));
+
+    expect(rendered.emitted("sync-to-account")).toHaveLength(1);
+    expect(rendered.emitted("restore-from-account")).toHaveLength(1);
+  });
+
+  it("disables sync button while syncing", () => {
+    render(InstalledAppsModal, {
+      props: {
+        show: true,
+        apps: [],
+        loading: false,
+        error: "",
+        activeOrigin: "spark",
+        storeFilter: "both",
+        sparkAvailable: true,
+        apmAvailable: true,
+        loggedIn: true,
+        syncing: true,
+      },
+    });
+
+    expect(screen.getByRole("button", { name: "同步中" })).toBeDisabled();
+  });
 });
diff --git a/src/__tests__/unit/LoginModal.test.ts b/src/__tests__/unit/LoginModal.test.ts
new file mode 100644
index 00000000..aa4cb985
--- /dev/null
+++ b/src/__tests__/unit/LoginModal.test.ts
@@ -0,0 +1,23 @@
+import { fireEvent, render, screen } from "@testing-library/vue";
+import { describe, expect, it } from "vitest";
+
+import LoginModal from "@/components/LoginModal.vue";
+
+describe("LoginModal", () => {
+  it("emits login credentials and register request", async () => {
+    const rendered = render(LoginModal, {
+      props: { show: true, loading: false, error: "" },
+    });
+
+    await fireEvent.update(screen.getByLabelText("论坛账号"), "  momen  ");
+    await fireEvent.update(screen.getByLabelText("论坛密码"), "  secret  ");
+    await fireEvent.click(screen.getByRole("button", { name: "登录" }));
+    await fireEvent.click(screen.getByRole("button", { name: "注册账号" }));
+
+    expect(rendered.emitted("login")?.[0]?.[0]).toEqual({
+      identification: "momen",
+      password: "secret",
+    });
+    expect(rendered.emitted("register")).toHaveLength(1);
+  });
+});
diff --git a/src/__tests__/unit/ReviewsPanel.test.ts b/src/__tests__/unit/ReviewsPanel.test.ts
new file mode 100644
index 00000000..ca7a7bf3
--- /dev/null
+++ b/src/__tests__/unit/ReviewsPanel.test.ts
@@ -0,0 +1,142 @@
+import { render, screen } from "@testing-library/vue";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import ReviewsPanel from "@/components/ReviewsPanel.vue";
+import {
+  fetchRatingSummary,
+  fetchReviews,
+  submitReview,
+} from "@/modules/backendApi";
+import type {
+  AppReview,
+  RatingSummary,
+  ReviewTags,
+} from "@/global/typedefinition";
+
+const emptySummary: RatingSummary = {
+  averageRating: 0,
+  reviewCount: 0,
+  starCounts: {},
+};
+
+vi.mock("@/modules/backendApi", () => ({
+  fetchRatingSummary: vi.fn(async () => emptySummary),
+  fetchReviews: vi.fn(async () => []),
+  submitReview: vi.fn(),
+}));
+
+const tags: ReviewTags = {
+  origin: "apm",
+  category: "office",
+  pkgname: "wps",
+  version: "1.0.0",
+  packageArch: "amd64",
+  clientArch: "amd64",
+  distro: "deepin 25",
+};
+
+describe("ReviewsPanel", () => {
+  beforeEach(() => {
+    vi.mocked(fetchRatingSummary).mockReset();
+    vi.mocked(fetchReviews).mockReset();
+    vi.mocked(submitReview).mockReset();
+    vi.mocked(fetchRatingSummary).mockResolvedValue(emptySummary);
+    vi.mocked(fetchReviews).mockResolvedValue([]);
+  });
+
+  it("shows anonymous login prompt and read-only review tags", () => {
+    render(ReviewsPanel, {
+      props: { appKey: "apm:amd64-apm:office:wps", tags, loggedIn: false },
+    });
+
+    expect(screen.getByText("登录后发表评论")).toBeTruthy();
+    expect(screen.getByText("1.0.0")).toBeTruthy();
+    expect(screen.getByText("deepin 25")).toBeTruthy();
+    expect(fetchRatingSummary).not.toHaveBeenCalled();
+    expect(fetchReviews).not.toHaveBeenCalled();
+  });
+
+  it("ignores stale review responses after app key changes", async () => {
+    let resolveFirstSummary!: (summary: RatingSummary) => void;
+    let resolveFirstReviews!: (reviews: AppReview[]) => void;
+    let resolveSecondSummary!: (summary: RatingSummary) => void;
+    let resolveSecondReviews!: (reviews: AppReview[]) => void;
+
+    vi.mocked(fetchRatingSummary)
+      .mockReturnValueOnce(
+        new Promise((resolve) => {
+          resolveFirstSummary = resolve;
+        }),
+      )
+      .mockReturnValueOnce(
+        new Promise((resolve) => {
+          resolveSecondSummary = resolve;
+        }),
+      );
+    vi.mocked(fetchReviews)
+      .mockReturnValueOnce(
+        new Promise((resolve) => {
+          resolveFirstReviews = resolve;
+        }),
+      )
+      .mockReturnValueOnce(
+        new Promise((resolve) => {
+          resolveSecondReviews = resolve;
+        }),
+      );
+
+    const rendered = render(ReviewsPanel, {
+      props: { appKey: "first", tags, loggedIn: true },
+    });
+
+    await rendered.rerender({ appKey: "second", tags, loggedIn: true });
+
+    resolveSecondSummary({ averageRating: 5, reviewCount: 1, starCounts: {} });
+    resolveSecondReviews([
+      {
+        id: 2,
+        rating: 5,
+        content: "second review",
+        version: tags.version,
+        packageArch: tags.packageArch,
+        clientArch: tags.clientArch,
+        distro: tags.distro,
+        origin: tags.origin,
+        category: tags.category,
+        createdAt: "2026-05-18T00:00:00Z",
+        updatedAt: "2026-05-18T00:00:00Z",
+        userDisplayName: "Second User",
+        userAvatarUrl: "",
+      },
+    ]);
+
+    expect(await screen.findByText("second review")).toBeTruthy();
+    expect(screen.getByText("5.0 / 5 (1)")).toBeTruthy();
+
+    resolveFirstSummary({ averageRating: 1, reviewCount: 1, starCounts: {} });
+    resolveFirstReviews([
+      {
+        id: 1,
+        rating: 1,
+        content: "first review",
+        version: tags.version,
+        packageArch: tags.packageArch,
+        clientArch: tags.clientArch,
+        distro: tags.distro,
+        origin: tags.origin,
+        category: tags.category,
+        createdAt: "2026-05-18T00:00:00Z",
+        updatedAt: "2026-05-18T00:00:00Z",
+        userDisplayName: "First User",
+        userAvatarUrl: "",
+      },
+    ]);
+
+    await new Promise((resolve) => setTimeout(resolve, 0));
+
+    expect(screen.getByText("second review")).toBeTruthy();
+    expect(screen.getByText("5.0 / 5 (1)")).toBeTruthy();
+    expect(screen.queryByText("first review")).toBeNull();
+    expect(screen.queryByText("1.0 / 5 (1)")).toBeNull();
+  });
+});
diff --git a/src/__tests__/unit/UserManagementView.test.ts b/src/__tests__/unit/UserManagementView.test.ts
new file mode 100644
index 00000000..d9811cb9
--- /dev/null
+++ b/src/__tests__/unit/UserManagementView.test.ts
@@ -0,0 +1,48 @@
+import { render, screen } from "@testing-library/vue";
+import { describe, expect, it } from "vitest";
+
+import UserManagementView from "@/components/UserManagementView.vue";
+import type { DownloadedAppRecord, SparkUser } from "@/global/typedefinition";
+
+const user: SparkUser = {
+  id: 1,
+  flarumUserId: "123",
+  username: "momen",
+  displayName: "Momen",
+  avatarUrl: "https://bbs.spark-app.store/avatar.png",
+  forumLevel: "管理员",
+  forumGroups: ["管理员"],
+};
+
+const download: DownloadedAppRecord = {
+  id: 1,
+  appKey: "app:office:wps",
+  pkgname: "wps",
+  name: "WPS",
+  category: "office",
+  selectedOrigin: "apm",
+  version: "1.0.0",
+  packageArch: "amd64",
+  downloadedAt: "2026-05-18T00:00:00Z",
+};
+
+describe("UserManagementView", () => {
+  it("renders profile, forum level, links, downloads, and sync preference", () => {
+    render(UserManagementView, {
+      props: {
+        user,
+        downloadedApps: [download],
+        syncEnabled: true,
+        loading: false,
+        error: "",
+      },
+    });
+
+    expect(screen.getByText("Momen")).toBeTruthy();
+    expect(screen.getByText("管理员")).toBeTruthy();
+    expect(screen.getByText("论坛首页")).toBeTruthy();
+    expect(screen.getByText("修改论坛资料")).toBeTruthy();
+    expect(screen.getByText("WPS")).toBeTruthy();
+    expect(screen.getByLabelText("自动同步已安装应用")).toBeChecked();
+  });
+});
diff --git a/src/__tests__/unit/accountSyncState.test.ts b/src/__tests__/unit/accountSyncState.test.ts
new file mode 100644
index 00000000..8d7b2fd8
--- /dev/null
+++ b/src/__tests__/unit/accountSyncState.test.ts
@@ -0,0 +1,28 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+describe("accountSyncState", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    localStorage.clear();
+  });
+
+  it("scopes installed sync preference to the current user", async () => {
+    const {
+      installedSyncEnabled,
+      loadInstalledSyncPreference,
+      setInstalledSyncEnabled,
+    } = await import("@/global/accountSyncState");
+
+    loadInstalledSyncPreference(1);
+    setInstalledSyncEnabled(true);
+
+    loadInstalledSyncPreference(2);
+
+    expect(installedSyncEnabled.value).toBeNull();
+
+    setInstalledSyncEnabled(false);
+    loadInstalledSyncPreference(1);
+
+    expect(installedSyncEnabled.value).toBe(true);
+  });
+});
diff --git a/src/__tests__/unit/accountTypes.test.ts b/src/__tests__/unit/accountTypes.test.ts
new file mode 100644
index 00000000..09ba85f0
--- /dev/null
+++ b/src/__tests__/unit/accountTypes.test.ts
@@ -0,0 +1,85 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  FLARUM_BASE_URL,
+  FLARUM_REGISTER_URL,
+  SPARK_BACKEND_BASE_URL,
+} from "@/global/storeConfig";
+import type {
+  DownloadedAppRecord,
+  FavoriteFolder,
+  FavoriteItem,
+  ReviewTags,
+  SparkUser,
+  SyncedAppListItem,
+} from "@/global/typedefinition";
+
+describe("account shared types", () => {
+  it("exports backend/forum config and account shapes", () => {
+    const user: SparkUser = {
+      id: 1,
+      flarumUserId: "123",
+      username: "momen",
+      displayName: "Momen",
+      avatarUrl: "https://bbs.spark-app.store/avatar.png",
+      forumLevel: "管理员",
+      forumGroups: ["管理员"],
+    };
+    const folder: FavoriteFolder = {
+      id: 1,
+      name: "默认收藏夹",
+      itemCount: 1,
+      createdAt: "2026-05-18T00:00:00Z",
+      updatedAt: "2026-05-18T00:00:00Z",
+    };
+    const favorite: FavoriteItem = {
+      id: 2,
+      appKey: "app:office:wps",
+      pkgname: "wps",
+      name: "WPS",
+      category: "office",
+      iconUrl: "https://example.invalid/wps.png",
+      createdAt: "2026-05-18T00:00:00Z",
+    };
+    const download: DownloadedAppRecord = {
+      id: 3,
+      appKey: "app:office:wps",
+      pkgname: "wps",
+      name: "WPS",
+      category: "office",
+      selectedOrigin: "apm",
+      version: "1.0.0",
+      packageArch: "amd64",
+      downloadedAt: "2026-05-18T00:00:00Z",
+    };
+    const syncItem: SyncedAppListItem = {
+      pkgname: "wps",
+      origin: "apm",
+      category: "office",
+      version: "1.0.0",
+      packageArch: "amd64",
+      appName: "WPS",
+      iconUrl: "https://example.invalid/wps.png",
+    };
+    const tags: ReviewTags = {
+      origin: "apm",
+      category: "office",
+      pkgname: "wps",
+      version: "1.0.0",
+      packageArch: "amd64",
+      clientArch: "amd64",
+      distro: "deepin 25",
+    };
+
+    expect(typeof SPARK_BACKEND_BASE_URL).toBe("string");
+    expect(SPARK_BACKEND_BASE_URL).toMatch(/^https?:\/\//);
+    expect(FLARUM_BASE_URL).toContain("bbs.spark-app.store");
+    expect(FLARUM_REGISTER_URL).toContain("register");
+    expect(user.forumGroups).toEqual(["管理员"]);
+    expect(folder.itemCount).toBe(1);
+    expect(favorite.appKey).toBe("app:office:wps");
+    expect(download.selectedOrigin).toBe("apm");
+    expect(syncItem.origin).toBe("apm");
+    expect(tags.packageArch).toBe("amd64");
+  });
+});
diff --git a/src/__tests__/unit/appIdentity.test.ts b/src/__tests__/unit/appIdentity.test.ts
new file mode 100644
index 00000000..fcc5bea0
--- /dev/null
+++ b/src/__tests__/unit/appIdentity.test.ts
@@ -0,0 +1,69 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  buildFavoriteAppKey,
+  buildReviewAppKey,
+  buildReviewTags,
+  getDisplayApp,
+  parsePackageArch,
+} from "@/modules/appIdentity";
+import type { App } from "@/global/typedefinition";
+
+const app: App = {
+  name: "WPS",
+  pkgname: "wps",
+  version: "1.0.0",
+  filename: "wps_1.0.0_amd64.deb",
+  torrent_address: "",
+  author: "",
+  contributor: "",
+  website: "",
+  update: "",
+  size: "",
+  more: "",
+  tags: "",
+  img_urls: [],
+  icons: "",
+  category: "office",
+  origin: "apm",
+  currentStatus: "not-installed",
+};
+
+describe("appIdentity", () => {
+  it("builds favorite and review keys", () => {
+    expect(buildFavoriteAppKey(app)).toBe("app:office:wps");
+    expect(buildReviewAppKey(app, "amd64")).toBe("apm:amd64-apm:office:wps");
+  });
+
+  it("builds review keys from already-qualified client arch values", () => {
+    expect(buildReviewAppKey({ ...app, origin: "spark" }, "amd64-store")).toBe(
+      "spark:amd64-store:office:wps",
+    );
+    expect(buildReviewAppKey(app, "amd64-apm")).toBe(
+      "apm:amd64-apm:office:wps",
+    );
+  });
+
+  it("parses package arch and review tags", () => {
+    expect(parsePackageArch(app.filename)).toBe("amd64");
+    expect(
+      buildReviewTags(app, { clientArch: "amd64", distro: "deepin 25" }),
+    ).toMatchObject({
+      origin: "apm",
+      category: "office",
+      pkgname: "wps",
+      packageArch: "amd64",
+    });
+  });
+
+  it("returns selected display app from merged apps", () => {
+    const merged: App = {
+      ...app,
+      isMerged: true,
+      viewingOrigin: "spark",
+      sparkApp: { ...app, origin: "spark" },
+      apmApp: app,
+    };
+    expect(getDisplayApp(merged)?.origin).toBe("spark");
+  });
+});
diff --git a/src/__tests__/unit/appListSync.test.ts b/src/__tests__/unit/appListSync.test.ts
new file mode 100644
index 00000000..c567339d
--- /dev/null
+++ b/src/__tests__/unit/appListSync.test.ts
@@ -0,0 +1,93 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  buildSyncItems,
+  cloudItemKey,
+  mergeInstalledApps,
+} from "@/modules/appListSync";
+import type { App } from "@/global/typedefinition";
+
+const createApp = (overrides: Partial<App> = {}): App => ({
+  name: "Spark Notes",
+  pkgname: "spark-notes",
+  version: "1.0.0",
+  filename: "spark-notes_1.0.0_amd64.deb",
+  torrent_address: "",
+  author: "",
+  contributor: "",
+  website: "",
+  update: "",
+  size: "1 MB",
+  more: "",
+  tags: "",
+  img_urls: [],
+  icons: "https://example.test/icon.png",
+  category: "office",
+  origin: "spark",
+  currentStatus: "installed",
+  ...overrides,
+});
+
+describe("appListSync", () => {
+  it("builds cloud sync items for installed store-recognized user apps", () => {
+    expect(buildSyncItems([createApp()])).toEqual([
+      {
+        pkgname: "spark-notes",
+        origin: "spark",
+        category: "office",
+        version: "1.0.0",
+        packageArch: "amd64",
+        appName: "Spark Notes",
+        iconUrl: "https://example.test/icon.png",
+      },
+    ]);
+  });
+
+  it("filters out non-installed unknown dependency and unusable package entries", () => {
+    const items = buildSyncItems([
+      createApp({ pkgname: "not-installed", currentStatus: "not-installed" }),
+      createApp({ pkgname: "unknown-app", category: "unknown" }),
+      createApp({ pkgname: "dependency", isDependency: true }),
+      createApp({ pkgname: "" }),
+      createApp({ pkgname: "blank-origin", origin: "spark" }),
+      createApp({ pkgname: "kept", origin: "apm", arch: "arm64" }),
+    ]);
+
+    expect(items).toEqual([
+      expect.objectContaining({ pkgname: "blank-origin" }),
+      expect.objectContaining({ pkgname: "kept", packageArch: "arm64" }),
+    ]);
+  });
+
+  it("uses pkgname as appName and blank icon when optional display fields are missing", () => {
+    const app = createApp({ icons: "", pkgname: "fallback-name" });
+    app.name = "";
+    const [syncItem] = buildSyncItems([app]);
+
+    expect(syncItem).toMatchObject({
+      appName: "fallback-name",
+      iconUrl: "",
+    });
+  });
+
+  it("builds stable installed keys from origin and package", () => {
+    expect(cloudItemKey({ origin: "apm", pkgname: "amber-ce" })).toBe(
+      "apm:amber-ce",
+    );
+  });
+
+  it("merges refreshed apps without mutating active modal origin lists", () => {
+    const current = [createApp({ origin: "apm", pkgname: "apm-installed" })];
+    const refreshed = [
+      createApp({ origin: "spark", pkgname: "spark-installed" }),
+    ];
+
+    expect(mergeInstalledApps(current, refreshed, ["spark"])).toEqual([
+      expect.objectContaining({ origin: "apm", pkgname: "apm-installed" }),
+      expect.objectContaining({ origin: "spark", pkgname: "spark-installed" }),
+    ]);
+    expect(current).toEqual([
+      expect.objectContaining({ origin: "apm", pkgname: "apm-installed" }),
+    ]);
+  });
+});
diff --git a/src/__tests__/unit/authState.test.ts b/src/__tests__/unit/authState.test.ts
new file mode 100644
index 00000000..e1cc3315
--- /dev/null
+++ b/src/__tests__/unit/authState.test.ts
@@ -0,0 +1,40 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+describe("authState", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    localStorage.clear();
+  });
+
+  it("persists and clears a backend session", async () => {
+    const { authSession, currentUser, isLoggedIn, setAuthSession, logout } =
+      await import("@/global/authState");
+
+    setAuthSession({
+      accessToken: "jwt",
+      tokenType: "bearer",
+      user: {
+        id: 1,
+        flarumUserId: "123",
+        username: "momen",
+        displayName: "Momen",
+        avatarUrl: "https://bbs.spark-app.store/avatar.png",
+        forumLevel: "管理员",
+        forumGroups: ["管理员"],
+      },
+    });
+
+    expect(authSession.value?.accessToken).toBe("jwt");
+    expect(currentUser.value?.displayName).toBe("Momen");
+    expect(isLoggedIn.value).toBe(true);
+    expect(
+      JSON.parse(localStorage.getItem("spark-store-auth") || "{}").accessToken,
+    ).toBe("jwt");
+
+    logout();
+
+    expect(authSession.value).toBeNull();
+    expect(isLoggedIn.value).toBe(false);
+    expect(localStorage.getItem("spark-store-auth")).toBeNull();
+  });
+});
diff --git a/src/__tests__/unit/backendApi.test.ts b/src/__tests__/unit/backendApi.test.ts
new file mode 100644
index 00000000..33f05106
--- /dev/null
+++ b/src/__tests__/unit/backendApi.test.ts
@@ -0,0 +1,74 @@
+import axios from "axios";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import { exchangeFlarumToken } from "@/modules/backendApi";
+
+const axiosMocks = vi.hoisted(() => {
+  const post = vi.fn();
+  return {
+    instance: {
+      defaults: { headers: { common: {} as Record<string, unknown> } },
+      get: vi.fn(),
+      post,
+    },
+    post,
+  };
+});
+
+const loggerMocks = vi.hoisted(() => ({
+  error: vi.fn(),
+}));
+
+vi.mock("axios", () => ({
+  default: {
+    create: vi.fn(() => axiosMocks.instance),
+    isAxiosError: (error: unknown) =>
+      Boolean((error as { isAxiosError?: boolean }).isAxiosError),
+  },
+}));
+
+vi.mock("pino", () => ({
+  default: () => loggerMocks,
+}));
+
+describe("backend API auth exchange", () => {
+  beforeEach(() => {
+    vi.mocked(axios.create).mockClear();
+    axiosMocks.post.mockReset();
+    loggerMocks.error.mockReset();
+  });
+
+  it("maps backend connection failures to a user-actionable login error", async () => {
+    const error = Object.assign(new Error("Network Error"), {
+      code: "ERR_NETWORK",
+      isAxiosError: true,
+      request: {},
+    });
+    axiosMocks.post.mockRejectedValue(error);
+
+    await expect(
+      exchangeFlarumToken({ flarumUserId: "42", flarumToken: "forum-token" }),
+    ).rejects.toThrow("无法连接星火账号服务，请确认后端服务已启动或稍后重试。");
+    expect(loggerMocks.error).toHaveBeenCalledWith(
+      {
+        code: "ERR_NETWORK",
+        message: "Network Error",
+        status: undefined,
+      },
+      "Spark backend auth exchange failed",
+    );
+    expect(JSON.stringify(loggerMocks.error.mock.calls)).not.toContain("forum-token");
+  });
+
+  it("maps backend server failures to an update-required login error", async () => {
+    const error = Object.assign(new Error("Request failed with status code 500"), {
+      isAxiosError: true,
+      response: { status: 500 },
+    });
+    axiosMocks.post.mockRejectedValue(error);
+
+    await expect(
+      exchangeFlarumToken({ flarumUserId: "42", flarumToken: "forum-token" }),
+    ).rejects.toThrow("星火账号服务异常，请确认后端数据库迁移已执行后重试。");
+  });
+});
diff --git a/src/__tests__/unit/favoriteAvailability.test.ts b/src/__tests__/unit/favoriteAvailability.test.ts
new file mode 100644
index 00000000..f5158d14
--- /dev/null
+++ b/src/__tests__/unit/favoriteAvailability.test.ts
@@ -0,0 +1,126 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+import { resolveFavoriteItems } from "@/modules/favoriteAvailability";
+import { loadPriorityConfig } from "@/global/storeConfig";
+import type { App, FavoriteItem } from "@/global/typedefinition";
+
+const originalFetch = globalThis.fetch;
+
+const app = (origin: "spark" | "apm", overrides: Partial<App> = {}): App => ({
+  name: "WPS",
+  pkgname: "wps",
+  version: "1.0.0",
+  filename: "wps_1.0.0_amd64.deb",
+  torrent_address: "",
+  author: "",
+  contributor: "",
+  website: "",
+  update: "",
+  size: "",
+  more: "",
+  tags: "",
+  img_urls: [],
+  icons: "",
+  category: "office",
+  origin,
+  currentStatus: "not-installed",
+  arch: "amd64",
+  ...overrides,
+});
+
+const favorite: FavoriteItem = {
+  id: 1,
+  appKey: "app:office:wps",
+  pkgname: "wps",
+  name: "WPS",
+  category: "office",
+  iconUrl: "",
+  createdAt: "2026-05-18T00:00:00Z",
+};
+
+describe("favoriteAvailability", () => {
+  afterEach(async () => {
+    vi.restoreAllMocks();
+    globalThis.fetch = originalFetch;
+    vi.spyOn(globalThis, "fetch").mockResolvedValue({ ok: false } as Response);
+    await loadPriorityConfig("amd64");
+    vi.restoreAllMocks();
+  });
+
+  it("marks downlisted favorites", () => {
+    expect(
+      resolveFavoriteItems(
+        [favorite],
+        [],
+        [],
+        { spark: true, apm: true },
+        "both",
+      )[0].status,
+    ).toBe("downlisted");
+  });
+
+  it("selects preferred installable variant", async () => {
+    vi.spyOn(globalThis, "fetch").mockResolvedValue({
+      ok: true,
+      json: async () => ({
+        sparkPriority: { pkgnames: [], categories: [], tags: [] },
+        apmPriority: { pkgnames: [], categories: [], tags: [] },
+      }),
+    } as Response);
+    await loadPriorityConfig("amd64");
+
+    const resolved = resolveFavoriteItems(
+      [favorite],
+      [app("spark"), app("apm")],
+      [],
+      { spark: true, apm: true },
+      "both",
+    )[0];
+    expect(resolved.status).toBe("installable");
+    expect(resolved.selectedApp?.origin).toBe("apm");
+  });
+
+  it("selects Spark when hybrid priority config prefers Spark", async () => {
+    vi.spyOn(globalThis, "fetch").mockResolvedValue({
+      ok: true,
+      json: async () => ({
+        sparkPriority: { pkgnames: ["wps"], categories: [], tags: [] },
+        apmPriority: { pkgnames: [], categories: [], tags: [] },
+      }),
+    } as Response);
+    await loadPriorityConfig("amd64");
+
+    const resolved = resolveFavoriteItems(
+      [favorite],
+      [app("spark"), app("apm")],
+      [],
+      { spark: true, apm: true },
+      "both",
+    )[0];
+
+    expect(resolved.status).toBe("installable");
+    expect(resolved.selectedApp?.origin).toBe("spark");
+  });
+
+  it("marks installed favorites", () => {
+    const resolved = resolveFavoriteItems(
+      [favorite],
+      [app("apm")],
+      [app("apm", { currentStatus: "installed" })],
+      { spark: true, apm: true },
+      "both",
+    )[0];
+    expect(resolved.status).toBe("installed");
+  });
+
+  it("marks installed favorites from all-category catalog matches", () => {
+    const resolved = resolveFavoriteItems(
+      [favorite],
+      [app("spark")],
+      [app("spark", { category: "all", currentStatus: "installed" })],
+      { spark: true, apm: true },
+      "both",
+    )[0];
+    expect(resolved.status).toBe("installed");
+  });
+});
diff --git a/src/__tests__/unit/flarumAuth.test.ts b/src/__tests__/unit/flarumAuth.test.ts
new file mode 100644
index 00000000..db8bca7b
--- /dev/null
+++ b/src/__tests__/unit/flarumAuth.test.ts
@@ -0,0 +1,60 @@
+import axios from "axios";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import { requestFlarumToken } from "@/modules/flarumAuth";
+
+vi.mock("axios", () => ({
+  default: {
+    post: vi.fn(),
+  },
+}));
+
+describe("requestFlarumToken", () => {
+  beforeEach(() => {
+    vi.mocked(window.ipcRenderer.invoke).mockReset();
+    vi.mocked(axios.post).mockReset();
+  });
+
+  it("requests the Flarum token through main-process IPC", async () => {
+    vi.mocked(window.ipcRenderer.invoke).mockResolvedValue({
+      token: "forum-token",
+      user_id: 42,
+    });
+
+    const payload = { identification: "user@example.com", password: "secret" };
+
+    const token = await requestFlarumToken(payload);
+
+    expect(window.ipcRenderer.invoke).toHaveBeenCalledWith(
+      "request-flarum-token",
+      payload,
+    );
+    expect(axios.post).not.toHaveBeenCalled();
+    expect(token).toEqual({ token: "forum-token", userId: "42" });
+  });
+
+  it("rejects malformed token responses from main-process IPC", async () => {
+    vi.mocked(window.ipcRenderer.invoke).mockResolvedValue({
+      token: "",
+      user_id: 42,
+    });
+
+    await expect(
+      requestFlarumToken({ identification: "momen", password: "secret" }),
+    ).rejects.toThrow("论坛登录响应异常，请稍后重试。");
+  });
+
+  it("strips Electron IPC wrapper text from known login errors", async () => {
+    vi.mocked(window.ipcRenderer.invoke).mockRejectedValue(
+      new Error(
+        "Error invoking remote method 'request-flarum-token': Error: 无法连接星火论坛，请检查网络后重试。",
+      ),
+    );
+
+    await expect(
+      requestFlarumToken({ identification: "momen", password: "secret" }),
+    ).rejects.toMatchObject({
+      message: "无法连接星火论坛，请检查网络后重试。",
+    });
+  });
+});
diff --git a/src/__tests__/unit/processInstall.test.ts b/src/__tests__/unit/processInstall.test.ts
index de2b85c2..aca2a9ee 100644
--- a/src/__tests__/unit/processInstall.test.ts
+++ b/src/__tests__/unit/processInstall.test.ts
@@ -107,4 +107,44 @@ describe("processInstall queue forwarding", () => {
       expect.stringContaining('"id":5'),
     );
   });
+
+  it("returns queued download metadata for account records", async () => {
+    vi.doMock("axios", () => ({
+      default: {
+        create: vi.fn(() => ({
+          post: vi.fn(() => Promise.resolve({ data: { ok: true } })),
+        })),
+      },
+    }));
+    Object.assign(window.ipcRenderer, {
+      on: vi.fn(),
+      send: vi.fn(),
+      invoke: vi.fn(() => Promise.resolve(true)),
+    });
+    window.apm_store.arch = "amd64";
+    const { handleInstall } = await import("@/modules/processInstall");
+
+    const result = await handleInstall({
+      name: "WPS",
+      pkgname: "wps",
+      version: "1.0.0",
+      filename: "wps_1.0.0_amd64.deb",
+      torrent_address: "",
+      author: "",
+      contributor: "",
+      website: "",
+      update: "",
+      size: "",
+      more: "",
+      tags: "",
+      img_urls: [],
+      icons: "",
+      category: "office",
+      origin: "apm",
+      currentStatus: "not-installed",
+    });
+
+    expect(result?.pkgname).toBe("wps");
+    expect(result?.origin).toBe("apm");
+  });
 });
diff --git a/src/components/AccountQuickMenu.vue b/src/components/AccountQuickMenu.vue
new file mode 100644
index 00000000..b7dc12e2
--- /dev/null
+++ b/src/components/AccountQuickMenu.vue
@@ -0,0 +1,78 @@
+<template>
+  <div
+    class="absolute left-0 right-0 top-full z-20 mt-2 rounded-2xl border border-slate-200 bg-white p-2 shadow-xl dark:border-slate-700 dark:bg-slate-900"
+  >
+    <button
+      type="button"
+      class="quick-menu-item"
+      @click="emit('open-user-management')"
+    >
+      <i class="fas fa-user-cog"></i>
+      <span>用户管理</span>
+    </button>
+    <button
+      type="button"
+      class="quick-menu-item"
+      @click="emit('open-favorites')"
+    >
+      <i class="fas fa-heart"></i>
+      <span>我的收藏</span>
+    </button>
+    <button type="button" class="quick-menu-item" @click="emit('open-forum')">
+      <i class="fas fa-comments"></i>
+      <span>论坛首页</span>
+    </button>
+    <button type="button" class="quick-menu-item" @click="emit('edit-profile')">
+      <i class="fas fa-id-card"></i>
+      <span>修改论坛资料</span>
+    </button>
+    <button
+      type="button"
+      class="quick-menu-item text-red-600 hover:text-red-700 dark:text-red-400 dark:hover:text-red-300"
+      @click="emit('logout')"
+    >
+      <i class="fas fa-sign-out-alt"></i>
+      <span>退出登录</span>
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+const emit = defineEmits<{
+  "open-user-management": [];
+  "open-favorites": [];
+  "open-forum": [];
+  "edit-profile": [];
+  logout: [];
+}>();
+</script>
+
+<style scoped>
+.quick-menu-item {
+  display: flex;
+  width: 100%;
+  align-items: center;
+  gap: 0.75rem;
+  border-radius: 0.75rem;
+  padding: 0.625rem 0.75rem;
+  text-align: left;
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: #475569;
+  transition: all 0.15s ease;
+}
+
+.quick-menu-item:hover {
+  background: rgba(0, 113, 227, 0.06);
+  color: #0071e3;
+}
+
+.dark .quick-menu-item {
+  color: #cbd5e1;
+}
+
+.dark .quick-menu-item:hover {
+  background: rgba(64, 156, 255, 0.1);
+  color: #409cff;
+}
+</style>
diff --git a/src/components/AppDetailPage.vue b/src/components/AppDetailPage.vue
new file mode 100644
index 00000000..7b1c4bd8
--- /dev/null
+++ b/src/components/AppDetailPage.vue
@@ -0,0 +1,358 @@
+<template>
+  <section
+    v-if="displayApp"
+    class="mx-auto max-w-6xl rounded-3xl border border-slate-200 bg-white p-5 shadow-sm dark:border-slate-800 dark:bg-slate-900 lg:p-6"
+  >
+    <button
+      type="button"
+      class="mb-5 inline-flex items-center gap-2 rounded-full border border-slate-200 bg-white px-4 py-2 text-sm font-medium text-slate-600 shadow-sm transition hover:bg-slate-50 hover:text-slate-900 dark:border-slate-700 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700"
+      aria-label="返回"
+      @click="emit('back')"
+    >
+      <i class="fas fa-arrow-left"></i>
+      <span>返回</span>
+    </button>
+
+    <div class="grid gap-6 lg:grid-cols-[18rem_minmax(0,1fr)]">
+      <aside class="space-y-5">
+        <div class="text-center">
+          <div
+            class="mx-auto flex h-28 w-28 items-center justify-center overflow-hidden rounded-3xl bg-gradient-to-b from-slate-100 to-slate-200 shadow-lg dark:from-slate-800 dark:to-slate-700"
+          >
+            <img
+              :src="iconPath"
+              alt="icon"
+              class="h-full w-full object-cover"
+              loading="lazy"
+            />
+          </div>
+          <h1 class="mt-4 text-2xl font-bold text-slate-900 dark:text-white">
+            {{ displayApp.name }}
+          </h1>
+          <p class="mt-1 text-sm text-slate-500 dark:text-slate-400">
+            {{ displayApp.pkgname }}
+          </p>
+          <p
+            v-if="displayApp.version"
+            class="mt-1 text-sm text-slate-500 dark:text-slate-400"
+          >
+            {{ displayApp.version }}
+          </p>
+        </div>
+
+        <div
+          class="flex items-center justify-between rounded-2xl border border-slate-200/60 bg-slate-50/70 px-4 py-3 dark:border-slate-800/60 dark:bg-slate-800/50"
+        >
+          <span class="text-sm text-slate-500 dark:text-slate-400">来源</span>
+          <div
+            v-if="app.isMerged"
+            class="flex overflow-hidden rounded-lg border border-slate-200 shadow-sm dark:border-slate-700"
+          >
+            <button
+              v-if="app.sparkApp"
+              type="button"
+              class="px-3 py-1 text-xs font-medium uppercase tracking-wider transition-colors"
+              :class="
+                viewingOrigin === 'spark'
+                  ? 'bg-orange-500 text-white'
+                  : 'bg-slate-100 text-slate-500 hover:bg-slate-200 dark:bg-slate-700 dark:text-slate-400 dark:hover:bg-slate-600'
+              "
+              @click="selectOrigin('spark')"
+            >
+              Spark
+            </button>
+            <button
+              v-if="app.apmApp"
+              type="button"
+              class="px-3 py-1 text-xs font-medium uppercase tracking-wider transition-colors"
+              :class="
+                viewingOrigin === 'apm'
+                  ? 'bg-blue-500 text-white'
+                  : 'bg-slate-100 text-slate-500 hover:bg-slate-200 dark:bg-slate-700 dark:text-slate-400 dark:hover:bg-slate-600'
+              "
+              @click="selectOrigin('apm')"
+            >
+              APM
+            </button>
+          </div>
+          <span
+            v-else
+            class="rounded-md px-2 py-1 text-xs font-bold uppercase tracking-wider"
+            :class="
+              displayApp.origin === 'spark'
+                ? 'bg-orange-100 text-orange-600 dark:bg-orange-900/30 dark:text-orange-400'
+                : 'bg-blue-100 text-blue-600 dark:bg-blue-900/30 dark:text-blue-400'
+            "
+          >
+            {{ displayApp.origin === "spark" ? "Spark" : "APM" }}
+          </span>
+        </div>
+
+        <div class="space-y-2">
+          <button
+            v-if="!isInstalled"
+            type="button"
+            class="inline-flex w-full items-center justify-center gap-2 rounded-xl bg-slate-800 px-4 py-2.5 text-sm font-medium text-white shadow-sm transition hover:bg-slate-700 disabled:opacity-40 dark:bg-slate-700 dark:hover:bg-slate-600"
+            :disabled="isOtherVersionInstalled"
+            @click="emit('install', displayApp)"
+          >
+            <i class="fas fa-download text-xs"></i>
+            <span>{{ installButtonText }}</span>
+          </button>
+          <div v-else class="flex gap-2">
+            <button
+              type="button"
+              class="inline-flex flex-1 items-center justify-center gap-2 rounded-xl bg-slate-800 px-4 py-2.5 text-sm font-medium text-white shadow-sm transition hover:bg-slate-700 dark:bg-slate-700 dark:hover:bg-slate-600"
+              @click="emit('open-app', displayApp.pkgname, displayApp.origin)"
+            >
+              <i class="fas fa-external-link-alt text-xs"></i>
+              <span>打开</span>
+            </button>
+            <button
+              type="button"
+              class="inline-flex flex-1 items-center justify-center gap-2 rounded-xl border border-slate-300 bg-white px-4 py-2.5 text-sm font-medium text-slate-600 transition hover:border-rose-400 hover:bg-rose-50 hover:text-rose-500 dark:border-slate-600 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700 dark:hover:text-rose-400"
+              @click="emit('remove', displayApp)"
+            >
+              <i class="fas fa-trash text-xs"></i>
+              <span>卸载</span>
+            </button>
+          </div>
+          <button
+            type="button"
+            class="inline-flex w-full items-center justify-center gap-2 rounded-xl border border-slate-300 bg-white px-4 py-2.5 text-sm font-medium text-slate-600 transition hover:bg-slate-50 hover:text-slate-900 dark:border-slate-600 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700"
+            @click="handleFavorite"
+          >
+            <i class="fas fa-star text-xs"></i>
+            <span>收藏</span>
+          </button>
+        </div>
+
+        <dl
+          class="space-y-2 border-t border-slate-200/60 pt-3 text-xs dark:border-slate-800/60"
+        >
+          <div v-if="displayApp.category" class="flex justify-between gap-3">
+            <dt class="text-slate-400">分类</dt>
+            <dd class="truncate text-slate-700 dark:text-slate-300">
+              {{ displayApp.category }}
+            </dd>
+          </div>
+          <div v-if="displayApp.author" class="flex justify-between gap-3">
+            <dt class="text-slate-400">作者</dt>
+            <dd class="truncate text-slate-700 dark:text-slate-300">
+              {{ displayApp.author }}
+            </dd>
+          </div>
+          <div v-if="displayApp.size" class="flex justify-between gap-3">
+            <dt class="text-slate-400">大小</dt>
+            <dd class="text-slate-700 dark:text-slate-300">
+              {{ displayApp.size }}
+            </dd>
+          </div>
+          <div v-if="displayApp.update" class="flex justify-between gap-3">
+            <dt class="text-slate-400">更新</dt>
+            <dd class="text-slate-700 dark:text-slate-300">
+              {{ displayApp.update }}
+            </dd>
+          </div>
+        </dl>
+      </aside>
+
+      <div class="min-w-0 space-y-5">
+        <div
+          class="rounded-2xl border border-slate-200/60 bg-slate-50/50 p-5 dark:border-slate-800/60 dark:bg-slate-800/30"
+        >
+          <h2 class="mb-3 flex items-center gap-2 text-base font-semibold">
+            <i class="fas fa-info-circle text-slate-400"></i>
+            应用详情
+          </h2>
+          <div
+            v-if="displayApp.more.trim() !== ''"
+            class="space-y-2 text-sm leading-relaxed text-slate-600 dark:text-slate-300"
+            v-html="detailHtml"
+          ></div>
+          <p v-else class="text-sm text-slate-400">暂无应用详情</p>
+        </div>
+
+        <div
+          class="rounded-2xl border border-slate-200/60 bg-slate-50/50 p-5 dark:border-slate-800/60 dark:bg-slate-800/30"
+        >
+          <h2 class="mb-3 flex items-center gap-2 text-base font-semibold">
+            <i class="fas fa-images text-slate-400"></i>
+            应用截图
+          </h2>
+          <div v-if="screenshots.length" class="grid gap-3 sm:grid-cols-2">
+            <img
+              v-for="(screen, index) in screenshots"
+              :key="screen"
+              :src="screen"
+              alt="screenshot"
+              class="h-44 w-full cursor-pointer rounded-2xl border border-slate-200/60 object-cover shadow-sm transition hover:-translate-y-1 hover:shadow-lg dark:border-slate-800/60"
+              loading="lazy"
+              @click="emit('open-preview', index)"
+              @error="hideImage"
+            />
+          </div>
+          <p v-else class="text-sm text-slate-400">暂无应用截图</p>
+        </div>
+
+        <ReviewsPanel
+          v-if="loggedIn && reviewAppKey && reviewTags"
+          :app-key="reviewAppKey"
+          :tags="reviewTags"
+          :logged-in="loggedIn"
+          @request-login="$emit('request-login', $event)"
+        />
+        <section
+          v-else-if="reviewAppKey && reviewTags"
+          class="rounded-2xl border border-slate-200/60 bg-slate-50/50 p-5 dark:border-slate-800/60 dark:bg-slate-800/30"
+        >
+          <h2 class="mb-2 flex items-center gap-2 text-base font-semibold">
+            <i class="fas fa-comments text-slate-400"></i>
+            应用评价
+          </h2>
+          <p class="text-sm text-slate-500 dark:text-slate-400">
+            登录星火账号后可查看评价并发表评论。
+          </p>
+          <button
+            type="button"
+            class="mt-4 inline-flex items-center rounded-xl bg-slate-800 px-4 py-2 text-sm font-medium text-white transition hover:bg-slate-700 dark:bg-slate-700 dark:hover:bg-slate-600"
+            @click="emit('request-login', '登录后查看和发表评论。')"
+          >
+            登录后查看评价
+          </button>
+        </section>
+      </div>
+    </div>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, watch } from "vue";
+import ReviewsPanel from "@/components/ReviewsPanel.vue";
+import {
+  APM_STORE_BASE_URL,
+  getHybridDefaultOrigin,
+} from "@/global/storeConfig";
+import {
+  buildReviewAppKey,
+  buildReviewTags,
+  getDisplayApp,
+} from "@/modules/appIdentity";
+import type { App, ReviewTags } from "@/global/typedefinition";
+
+const props = defineProps<{
+  app: App;
+  screenshots: string[];
+  sparkInstalled: boolean;
+  apmInstalled: boolean;
+  loggedIn: boolean;
+  reviewAppKey: string;
+  reviewTags: ReviewTags | null;
+}>();
+
+const emit = defineEmits<{
+  back: [];
+  install: [app: App];
+  remove: [app: App];
+  favorite: [app: App];
+  "request-login": [message: string];
+  "open-preview": [index: number];
+  "open-app": [pkgname: string, origin?: "spark" | "apm"];
+  "check-install": [app: App];
+}>();
+
+const viewingOrigin = ref<"spark" | "apm">(
+  props.app.viewingOrigin ?? props.app.origin,
+);
+
+watch(
+  () => props.app,
+  (app) => {
+    if (app.isMerged) {
+      viewingOrigin.value =
+        app.viewingOrigin ??
+        (app.sparkApp ? getHybridDefaultOrigin(app.sparkApp) : "apm");
+    } else {
+      viewingOrigin.value = app.origin;
+    }
+  },
+  { immediate: true },
+);
+
+const appWithSelectedOrigin = computed<App>(() => ({
+  ...props.app,
+  viewingOrigin: viewingOrigin.value,
+}));
+
+const displayApp = computed(() => getDisplayApp(appWithSelectedOrigin.value));
+
+watch(
+  () => displayApp.value,
+  (app) => {
+    if (app) emit("check-install", app);
+  },
+);
+
+const isInstalled = computed(() =>
+  viewingOrigin.value === "spark" ? props.sparkInstalled : props.apmInstalled,
+);
+
+const isOtherVersionInstalled = computed(() =>
+  viewingOrigin.value === "spark" ? props.apmInstalled : props.sparkInstalled,
+);
+
+const installButtonText = computed(() => {
+  if (isOtherVersionInstalled.value) {
+    return viewingOrigin.value === "spark"
+      ? "已安装 APM 版"
+      : "已安装 Spark 版";
+  }
+  return "安装";
+});
+
+const iconPath = computed(() => {
+  if (!displayApp.value) return "";
+  const arch = window.apm_store.arch || "amd64";
+  const finalArch =
+    displayApp.value.origin === "spark" ? `${arch}-store` : `${arch}-apm`;
+  return `${APM_STORE_BASE_URL}/${finalArch}/${displayApp.value.category}/${displayApp.value.pkgname}/icon.png`;
+});
+
+const detailHtml = computed(
+  () => displayApp.value?.more.replace(/\n/g, "<br>") ?? "",
+);
+
+const reviewAppKey = computed(() => {
+  if (!displayApp.value) return "";
+  return buildReviewAppKey(
+    displayApp.value,
+    props.reviewTags?.clientArch ?? "amd64",
+  );
+});
+
+const reviewTags = computed<ReviewTags | null>(() => {
+  if (!displayApp.value || !props.reviewTags) return null;
+  return buildReviewTags(displayApp.value, {
+    clientArch: props.reviewTags.clientArch,
+    distro: props.reviewTags.distro,
+  });
+});
+
+const selectOrigin = (origin: "spark" | "apm") => {
+  viewingOrigin.value = origin;
+  if (displayApp.value) emit("check-install", displayApp.value);
+};
+
+const handleFavorite = () => {
+  if (!displayApp.value) return;
+  if (!props.loggedIn) {
+    emit("request-login", "收藏应用需要登录星火账号。");
+    return;
+  }
+  emit("favorite", displayApp.value);
+};
+
+const hideImage = (event: Event) => {
+  (event.target as HTMLElement).style.display = "none";
+};
+</script>
diff --git a/src/components/AppListRestoreModal.vue b/src/components/AppListRestoreModal.vue
new file mode 100644
index 00000000..06feaab8
--- /dev/null
+++ b/src/components/AppListRestoreModal.vue
@@ -0,0 +1,188 @@
+<template>
+  <Transition
+    enter-active-class="duration-200 ease-out"
+    enter-from-class="opacity-0 scale-95"
+    enter-to-class="opacity-100 scale-100"
+    leave-active-class="duration-150 ease-in"
+    leave-from-class="opacity-100 scale-100"
+    leave-to-class="opacity-0 scale-95"
+  >
+    <div
+      v-if="show"
+      class="fixed inset-0 z-50 flex items-start justify-center bg-slate-900/70 px-4 py-10"
+      @click.self="emit('close')"
+    >
+      <div
+        class="flex w-full max-w-3xl max-h-[85vh] flex-col rounded-3xl border border-white/10 bg-white/95 shadow-2xl dark:border-slate-800 dark:bg-slate-900"
+      >
+        <div
+          class="flex items-start justify-between border-b border-slate-200/70 p-6 dark:border-slate-800/70"
+        >
+          <div>
+            <p class="text-2xl font-semibold text-slate-900 dark:text-white">
+              从账号恢复
+            </p>
+            <p class="text-sm text-slate-500 dark:text-slate-400">
+              选择云端已同步的应用加入安装队列
+            </p>
+          </div>
+          <button
+            type="button"
+            class="inline-flex h-10 w-10 items-center justify-center rounded-full border border-slate-200/70 text-slate-500 transition hover:text-slate-900 dark:border-slate-700 dark:hover:bg-slate-800 dark:hover:text-white"
+            aria-label="关闭"
+            @click="emit('close')"
+          >
+            <i class="fas fa-xmark"></i>
+          </button>
+        </div>
+
+        <div class="flex-1 overflow-y-auto p-6">
+          <div
+            v-if="loading"
+            class="rounded-2xl border border-dashed border-slate-200/80 px-4 py-10 text-center text-slate-500 dark:border-slate-800/80 dark:text-slate-400"
+          >
+            正在读取云端应用列表…
+          </div>
+          <div
+            v-else-if="error"
+            class="rounded-2xl border border-rose-200/70 bg-rose-50/60 px-4 py-6 text-center text-sm text-rose-600 dark:border-rose-500/40 dark:bg-rose-500/10"
+          >
+            {{ error }}
+          </div>
+          <div
+            v-else-if="items.length === 0"
+            class="rounded-2xl border border-slate-200/70 px-4 py-10 text-center text-slate-500 dark:border-slate-800/70 dark:text-slate-400"
+          >
+            云端暂无已同步应用
+          </div>
+          <div v-else class="space-y-3">
+            <label
+              v-for="item in items"
+              :key="cloudItemKey(item)"
+              class="flex items-center gap-3 rounded-2xl border border-slate-200/70 bg-white/90 p-4 shadow-sm dark:border-slate-800/70 dark:bg-slate-900/70"
+              :class="isInstalled(item) ? 'opacity-60' : 'cursor-pointer'"
+            >
+              <input
+                type="checkbox"
+                class="h-4 w-4 rounded border-slate-300 text-brand focus:ring-brand"
+                :aria-label="item.appName || item.pkgname"
+                :checked="selectedKeys.has(cloudItemKey(item))"
+                :disabled="isInstalled(item)"
+                @change="toggleSelection(item)"
+              />
+              <img
+                v-if="item.iconUrl"
+                :src="item.iconUrl"
+                class="h-10 w-10 rounded-xl object-contain"
+                alt=""
+              />
+              <div
+                v-else
+                class="flex h-10 w-10 items-center justify-center rounded-xl bg-slate-100 text-slate-400 dark:bg-slate-800"
+              >
+                <i class="fas fa-cube"></i>
+              </div>
+              <div class="min-w-0 flex-1">
+                <p class="font-semibold text-slate-900 dark:text-white">
+                  {{ item.appName || item.pkgname }}
+                </p>
+                <p class="truncate text-xs text-slate-500 dark:text-slate-400">
+                  {{ item.origin }} · {{ item.category }} · {{ item.pkgname }} ·
+                  {{ item.version }} · {{ item.packageArch }}
+                </p>
+              </div>
+              <span
+                v-if="isInstalled(item)"
+                class="rounded-full bg-emerald-100 px-3 py-1 text-xs font-semibold text-emerald-700 dark:bg-emerald-500/20 dark:text-emerald-300"
+              >
+                已安装
+              </span>
+            </label>
+          </div>
+        </div>
+
+        <div
+          class="flex items-center justify-end gap-3 border-t border-slate-200/70 p-6 dark:border-slate-800/70"
+        >
+          <button
+            type="button"
+            class="rounded-2xl border border-slate-200/70 px-4 py-2 text-sm font-semibold text-slate-600 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800"
+            @click="emit('close')"
+          >
+            取消
+          </button>
+          <button
+            type="button"
+            class="rounded-2xl bg-brand px-5 py-2 text-sm font-semibold text-white transition hover:bg-brand/90 disabled:opacity-40"
+            :disabled="selectedItems.length === 0"
+            @click="emit('install-selected', selectedItems)"
+          >
+            加入安装队列
+          </button>
+        </div>
+      </div>
+    </div>
+  </Transition>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, watch } from "vue";
+
+import type { SyncedAppListItem } from "@/global/typedefinition";
+import { cloudItemKey } from "@/modules/appListSync";
+
+const props = defineProps<{
+  show: boolean;
+  loading: boolean;
+  error: string;
+  items: SyncedAppListItem[];
+  installedKeys: Set<string>;
+}>();
+
+const emit = defineEmits<{
+  (e: "close"): void;
+  (e: "install-selected", items: SyncedAppListItem[]): void;
+}>();
+
+const selectedKeys = ref<Set<string>>(new Set());
+
+const isInstalled = (item: SyncedAppListItem): boolean =>
+  props.installedKeys.has(cloudItemKey(item));
+
+const selectedItems = computed(() =>
+  props.items.filter(
+    (item) => selectedKeys.value.has(cloudItemKey(item)) && !isInstalled(item),
+  ),
+);
+
+const pruneSelectedKeys = (): void => {
+  selectedKeys.value = new Set(
+    [...selectedKeys.value].filter((key) => !props.installedKeys.has(key)),
+  );
+};
+
+const toggleSelection = (item: SyncedAppListItem): void => {
+  if (isInstalled(item)) return;
+  const key = cloudItemKey(item);
+  const next = new Set(selectedKeys.value);
+  if (next.has(key)) next.delete(key);
+  else next.add(key);
+  selectedKeys.value = next;
+};
+
+watch(
+  () => [props.show, props.items] as const,
+  () => {
+    selectedKeys.value = new Set();
+  },
+  { deep: true },
+);
+
+watch(
+  () => props.installedKeys,
+  () => {
+    pruneSelectedKeys();
+  },
+  { deep: true },
+);
+</script>
diff --git a/src/components/AppSidebar.vue b/src/components/AppSidebar.vue
index 2ec3369d..d04e6ed1 100644
--- a/src/components/AppSidebar.vue
+++ b/src/components/AppSidebar.vue
@@ -1,21 +1,44 @@
 <template>
   <div class="flex h-full flex-col gap-6">
-    <div class="flex items-center justify-between gap-3">
-      <div class="flex items-center gap-3">
-        <img
-          :src="amberLogo"
-          alt="Amber PM"
-          class="h-11 w-11 rounded-2xl bg-white/70 p-2 shadow-sm ring-1 ring-slate-900/5 dark:bg-slate-800"
+    <div class="flex items-start justify-between gap-3">
+      <div class="relative min-w-0 flex-1">
+        <button
+          type="button"
+          class="flex w-full min-w-0 items-center gap-3 rounded-2xl p-1 text-left transition hover:bg-slate-100 dark:hover:bg-slate-800"
+          :aria-label="accountLabel"
+          @click="handleAccountClick"
+        >
+          <img
+            v-if="!currentUser || !currentUser.avatarUrl"
+            :src="amberLogo"
+            alt="Amber PM"
+            class="h-11 w-11 rounded-2xl bg-white/70 p-2 shadow-sm ring-1 ring-slate-900/5 dark:bg-slate-800"
+          />
+          <img
+            v-else
+            :src="currentUser.avatarUrl"
+            :alt="accountLabel"
+            class="h-11 w-11 rounded-2xl object-cover shadow-sm ring-1 ring-slate-900/5"
+          />
+          <div class="flex flex-col">
+            <span
+              class="text-xs uppercase tracking-[0.3em] text-slate-500 dark:text-slate-400"
+              >{{ currentUser ? currentUser.forumLevel : "Spark Store" }}</span
+            >
+            <span
+              class="text-lg font-semibold text-slate-900 dark:text-white"
+              >{{ accountLabel }}</span
+            >
+          </div>
+        </button>
+        <AccountQuickMenu
+          v-if="currentUser && showAccountMenu"
+          @open-user-management="emit('open-user-management')"
+          @open-favorites="emit('open-favorites')"
+          @open-forum="emit('open-forum')"
+          @edit-profile="emit('edit-profile')"
+          @logout="emit('logout')"
         />
-        <div class="flex flex-col">
-          <span
-            class="text-xs uppercase tracking-[0.3em] text-slate-500 dark:text-slate-400"
-            >Spark Store</span
-          >
-          <span class="text-lg font-semibold text-slate-900 dark:text-white"
-            >星火应用商店</span
-          >
-        </div>
       </div>
       <div class="flex items-center gap-1">
         <ThemeToggle :theme-mode="themeMode" @toggle="toggleTheme" />
@@ -105,10 +128,11 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from "vue";
+import { computed, ref } from "vue";
+import AccountQuickMenu from "./AccountQuickMenu.vue";
 import ThemeToggle from "./ThemeToggle.vue";
 import amberLogo from "../assets/imgs/spark-store.svg";
-import type { SidebarEntry } from "../global/typedefinition";
+import type { SidebarEntry, SparkUser } from "../global/typedefinition";
 
 const props = defineProps<{
   activeTab: string;
@@ -119,6 +143,7 @@ const props = defineProps<{
   storeFilter: "spark" | "apm" | "both";
   sidebarEntries: SidebarEntry[];
   entryCounts: Record<string, number>;
+  currentUser: SparkUser | null;
 }>();
 
 const emit = defineEmits<{
@@ -127,8 +152,31 @@ const emit = defineEmits<{
   (e: "close"): void;
   (e: "list"): void;
   (e: "update"): void;
+  (e: "request-login"): void;
+  (e: "open-user-management"): void;
+  (e: "open-favorites"): void;
+  (e: "open-forum"): void;
+  (e: "edit-profile"): void;
+  (e: "logout"): void;
 }>();
 
+const showAccountMenu = ref(false);
+
+const accountLabel = computed(() => {
+  return props.currentUser
+    ? props.currentUser.displayName || props.currentUser.username
+    : "登录 / 注册";
+});
+
+const handleAccountClick = () => {
+  if (!props.currentUser) {
+    emit("request-login");
+    return;
+  }
+
+  showAccountMenu.value = !showAccountMenu.value;
+};
+
 const toggleTheme = () => {
   emit("toggle-theme");
 };
diff --git a/src/components/FavoriteFolderManager.vue b/src/components/FavoriteFolderManager.vue
new file mode 100644
index 00000000..c39b6fc1
--- /dev/null
+++ b/src/components/FavoriteFolderManager.vue
@@ -0,0 +1,175 @@
+<template>
+  <section
+    class="rounded-3xl border border-slate-200 bg-white p-6 shadow-sm dark:border-slate-800 dark:bg-slate-900"
+  >
+    <div
+      class="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between"
+    >
+      <div>
+        <h1 class="text-2xl font-semibold text-slate-900 dark:text-white">
+          我的收藏
+        </h1>
+        <p class="mt-1 text-sm text-slate-500 dark:text-slate-400">
+          管理收藏夹中的应用，已下架或不可用项目会保留显示。
+        </p>
+      </div>
+      <button
+        type="button"
+        class="rounded-xl border border-slate-300 px-4 py-2 text-sm font-medium text-slate-600 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-300 dark:hover:bg-slate-800"
+        @click="emit('create-folder')"
+      >
+        新建收藏夹
+      </button>
+    </div>
+
+    <div class="mt-5 flex flex-wrap gap-2">
+      <button
+        v-for="folder in folders"
+        :key="folder.id"
+        type="button"
+        class="rounded-full px-4 py-2 text-sm font-medium transition"
+        :class="
+          folder.id === activeFolderId
+            ? 'bg-slate-900 text-white dark:bg-slate-100 dark:text-slate-900'
+            : 'bg-slate-100 text-slate-600 hover:bg-slate-200 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700'
+        "
+        @click="emit('select-folder', folder.id)"
+      >
+        {{ folder.name }} ({{ folder.itemCount }})
+      </button>
+    </div>
+
+    <div v-if="loading" class="mt-6 text-sm text-slate-500">加载中...</div>
+    <div v-else-if="error" class="mt-6 text-sm text-rose-500">{{ error }}</div>
+    <div v-else class="mt-6 space-y-3">
+      <div
+        v-if="items.length === 0"
+        class="rounded-2xl border border-dashed border-slate-300 p-8 text-center text-sm text-slate-500 dark:border-slate-700 dark:text-slate-400"
+      >
+        当前收藏夹暂无应用。
+      </div>
+      <label
+        v-for="resolved in items"
+        :key="resolved.item.id"
+        class="flex items-center gap-3 rounded-2xl border border-slate-200 p-4 transition hover:bg-slate-50 dark:border-slate-800 dark:hover:bg-slate-800/60"
+      >
+        <input
+          v-model="selectedIds"
+          type="checkbox"
+          class="h-4 w-4 rounded border-slate-300"
+          :value="resolved.item.id"
+          :aria-label="`选择 ${resolved.item.name || resolved.item.pkgname}`"
+        />
+        <img
+          v-if="resolved.item.iconUrl"
+          :src="resolved.item.iconUrl"
+          alt=""
+          class="h-10 w-10 rounded-xl object-cover"
+        />
+        <div
+          v-else
+          class="flex h-10 w-10 items-center justify-center rounded-xl bg-slate-100 text-sm font-semibold text-slate-500 dark:bg-slate-800"
+        >
+          {{ (resolved.item.name || resolved.item.pkgname).slice(0, 1) }}
+        </div>
+        <div class="min-w-0 flex-1">
+          <p class="truncate font-medium text-slate-900 dark:text-white">
+            {{ resolved.item.name || resolved.item.pkgname }}
+          </p>
+          <p class="truncate text-xs text-slate-500 dark:text-slate-400">
+            {{ resolved.item.pkgname }} · {{ resolved.item.category }}
+          </p>
+        </div>
+        <span
+          class="rounded-full px-3 py-1 text-xs font-medium"
+          :class="statusClass(resolved.status)"
+        >
+          {{ resolved.reason }}
+        </span>
+      </label>
+    </div>
+
+    <div class="mt-6 flex flex-wrap gap-3">
+      <button
+        type="button"
+        class="rounded-xl border border-slate-300 px-4 py-2 text-sm font-medium text-slate-600 transition hover:bg-slate-50 disabled:opacity-40 dark:border-slate-700 dark:text-slate-300 dark:hover:bg-slate-800"
+        @click="selectInstallable"
+      >
+        选择可安装
+      </button>
+      <button
+        type="button"
+        class="rounded-xl bg-slate-900 px-4 py-2 text-sm font-medium text-white transition hover:bg-slate-700 disabled:opacity-40 dark:bg-slate-100 dark:text-slate-900"
+        :disabled="selectedInstallableItems.length === 0"
+        @click="emit('install-selected', selectedInstallableItems)"
+      >
+        加入安装队列
+      </button>
+      <button
+        type="button"
+        class="rounded-xl border border-rose-300 px-4 py-2 text-sm font-medium text-rose-600 transition hover:bg-rose-50 disabled:opacity-40 dark:border-rose-900/70 dark:hover:bg-rose-950/30"
+        :disabled="selectedIds.length === 0"
+        @click="emit('remove-selected', [...selectedIds])"
+      >
+        移除选中
+      </button>
+    </div>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, watch } from "vue";
+import type {
+  FavoriteAvailabilityStatus,
+  FavoriteFolder,
+  ResolvedFavoriteItem,
+} from "@/global/typedefinition";
+
+const props = defineProps<{
+  folders: FavoriteFolder[];
+  activeFolderId: number | null;
+  items: ResolvedFavoriteItem[];
+  loading: boolean;
+  error: string;
+}>();
+
+const emit = defineEmits<{
+  "select-folder": [folderId: number];
+  "create-folder": [];
+  "remove-selected": [itemIds: number[]];
+  "install-selected": [items: ResolvedFavoriteItem[]];
+}>();
+
+const selectedIds = ref<number[]>([]);
+
+const selectedInstallableItems = computed(() =>
+  props.items.filter(
+    (item) =>
+      selectedIds.value.includes(item.item.id) && item.status === "installable",
+  ),
+);
+
+watch(
+  () => props.items,
+  () => {
+    const visibleIds = new Set(props.items.map((item) => item.item.id));
+    selectedIds.value = selectedIds.value.filter((id) => visibleIds.has(id));
+  },
+);
+
+const selectInstallable = () => {
+  selectedIds.value = props.items
+    .filter((item) => item.status === "installable")
+    .map((item) => item.item.id);
+};
+
+const statusClass = (status: FavoriteAvailabilityStatus): string => {
+  if (status === "installable") {
+    return "bg-emerald-100 text-emerald-700 dark:bg-emerald-900/30 dark:text-emerald-300";
+  }
+  if (status === "installed") {
+    return "bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-300";
+  }
+  return "bg-amber-100 text-amber-700 dark:bg-amber-900/30 dark:text-amber-300";
+};
+</script>
diff --git a/src/components/FavoriteFolderSelector.vue b/src/components/FavoriteFolderSelector.vue
new file mode 100644
index 00000000..7660b866
--- /dev/null
+++ b/src/components/FavoriteFolderSelector.vue
@@ -0,0 +1,60 @@
+<template>
+  <div
+    v-if="show"
+    class="fixed inset-0 z-50 flex items-center justify-center p-4"
+  >
+    <div class="absolute inset-0 bg-black/40" @click="emit('close')"></div>
+    <section
+      class="relative z-10 w-full max-w-sm rounded-3xl border border-slate-200 bg-white p-6 shadow-xl dark:border-slate-800 dark:bg-slate-900"
+      role="dialog"
+      aria-modal="true"
+      aria-label="选择收藏夹"
+    >
+      <h2 class="text-lg font-semibold text-slate-900 dark:text-white">
+        添加到收藏夹
+      </h2>
+      <p class="mt-1 text-sm text-slate-500 dark:text-slate-400">
+        选择要保存当前应用的收藏夹。
+      </p>
+      <div class="mt-5 space-y-2">
+        <button
+          type="button"
+          class="w-full rounded-xl border border-slate-200 px-4 py-3 text-left text-sm font-medium text-slate-700 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800"
+          @click="emit('select-folder', 'default')"
+        >
+          默认收藏夹
+        </button>
+        <button
+          v-for="folder in folders"
+          :key="folder.id"
+          type="button"
+          class="w-full rounded-xl border border-slate-200 px-4 py-3 text-left text-sm font-medium text-slate-700 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800"
+          @click="emit('select-folder', folder.id)"
+        >
+          {{ folder.name }}
+        </button>
+      </div>
+      <button
+        type="button"
+        class="mt-5 w-full rounded-xl bg-slate-900 px-4 py-2 text-sm font-medium text-white transition hover:bg-slate-700 dark:bg-slate-100 dark:text-slate-900"
+        @click="emit('close')"
+      >
+        取消
+      </button>
+    </section>
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { FavoriteFolder } from "@/global/typedefinition";
+
+defineProps<{
+  show: boolean;
+  folders: FavoriteFolder[];
+}>();
+
+const emit = defineEmits<{
+  close: [];
+  "select-folder": [folderId: number | "default"];
+}>();
+</script>
diff --git a/src/components/InstalledAppsModal.vue b/src/components/InstalledAppsModal.vue
index f4b8f763..b2717d0d 100644
--- a/src/components/InstalledAppsModal.vue
+++ b/src/components/InstalledAppsModal.vue
@@ -28,6 +28,23 @@
             </p>
           </div>
           <div class="flex items-center gap-3">
+            <button
+              type="button"
+              class="inline-flex items-center gap-2 rounded-2xl border border-brand/30 px-4 py-2 text-sm font-semibold text-brand transition hover:bg-brand/10 disabled:opacity-40"
+              :disabled="syncing"
+              @click="handleSyncClick"
+            >
+              <i class="fas fa-cloud-arrow-up"></i>
+              {{ syncing ? "同步中" : "同步到账号" }}
+            </button>
+            <button
+              type="button"
+              class="inline-flex items-center gap-2 rounded-2xl border border-slate-200/70 px-4 py-2 text-sm font-semibold text-slate-600 transition hover:bg-slate-50 dark:border-slate-700 dark:text-slate-200 dark:hover:bg-slate-800"
+              @click="handleRestoreClick"
+            >
+              <i class="fas fa-cloud-arrow-down"></i>
+              从账号恢复
+            </button>
             <div
               v-if="showOriginSwitcher"
               class="flex items-center rounded-2xl border border-slate-200/70 p-1 dark:border-slate-800/70"
@@ -220,17 +237,40 @@ const props = defineProps<{
   storeFilter: "spark" | "apm" | "both";
   sparkAvailable: boolean;
   apmAvailable: boolean;
+  loggedIn: boolean;
+  syncing: boolean;
 }>();
 
-defineEmits<{
+const emit = defineEmits<{
   (e: "close"): void;
   (e: "refresh"): void;
   (e: "uninstall", app: App): void;
   (e: "switch-origin", origin: "apm" | "spark"): void;
   (e: "open-app", app: App): void;
   (e: "open-detail", app: App): void;
+  (e: "sync-to-account"): void;
+  (e: "restore-from-account"): void;
+  (e: "request-login"): void;
 }>();
 
+const handleSyncClick = () => {
+  if (props.loggedIn) {
+    emit("sync-to-account");
+    return;
+  }
+
+  emit("request-login");
+};
+
+const handleRestoreClick = () => {
+  if (props.loggedIn) {
+    emit("restore-from-account");
+    return;
+  }
+
+  emit("request-login");
+};
+
 const onOverlayWheel = (e: WheelEvent) => {
   const target = e.target as HTMLElement;
   if (target.closest(".overflow-y-auto, .overflow-auto")) return;
diff --git a/src/components/LoginModal.vue b/src/components/LoginModal.vue
new file mode 100644
index 00000000..c3e2b760
--- /dev/null
+++ b/src/components/LoginModal.vue
@@ -0,0 +1,120 @@
+<template>
+  <Teleport to="body">
+    <Transition
+      enter-active-class="transition duration-200 ease-out"
+      enter-from-class="opacity-0"
+      enter-to-class="opacity-100"
+      leave-active-class="transition duration-150 ease-in"
+      leave-from-class="opacity-100"
+      leave-to-class="opacity-0"
+    >
+      <div
+        v-if="show"
+        class="fixed inset-0 z-[90] flex items-center justify-center bg-black/50 p-4 backdrop-blur-sm"
+        @click.self="emit('close')"
+      >
+        <form
+          class="w-full max-w-md rounded-3xl border border-slate-200 bg-white p-6 shadow-2xl dark:border-slate-700 dark:bg-slate-900"
+          @submit.prevent="submitLogin"
+        >
+          <div class="mb-6">
+            <h2 class="text-2xl font-bold text-slate-900 dark:text-white">
+              登录星火账号
+            </h2>
+            <p
+              class="mt-2 text-sm leading-6 text-slate-500 dark:text-slate-400"
+            >
+              使用论坛账号登录。密码仅直接提交到星火论坛用于换取论坛令牌，不会发送给商店后端。
+            </p>
+          </div>
+
+          <label class="mb-4 block">
+            <span
+              class="mb-2 block text-sm font-medium text-slate-700 dark:text-slate-200"
+            >
+              论坛账号
+            </span>
+            <input
+              v-model="identification"
+              type="text"
+              autocomplete="username"
+              class="w-full rounded-2xl border border-slate-200 bg-white px-4 py-3 text-slate-900 outline-none transition focus:border-brand focus:ring-2 focus:ring-brand/20 dark:border-slate-700 dark:bg-slate-800 dark:text-white"
+            />
+          </label>
+
+          <label class="mb-4 block">
+            <span
+              class="mb-2 block text-sm font-medium text-slate-700 dark:text-slate-200"
+            >
+              论坛密码
+            </span>
+            <input
+              v-model="password"
+              type="password"
+              autocomplete="current-password"
+              class="w-full rounded-2xl border border-slate-200 bg-white px-4 py-3 text-slate-900 outline-none transition focus:border-brand focus:ring-2 focus:ring-brand/20 dark:border-slate-700 dark:bg-slate-800 dark:text-white"
+            />
+          </label>
+
+          <p v-if="error" class="mb-4 text-sm text-red-600 dark:text-red-400">
+            {{ error }}
+          </p>
+
+          <div class="flex items-center justify-between gap-3">
+            <button
+              type="button"
+              class="rounded-xl px-4 py-2 text-sm font-medium text-slate-500 transition hover:bg-slate-100 dark:text-slate-300 dark:hover:bg-slate-800"
+              @click="emit('register')"
+            >
+              注册账号
+            </button>
+            <div class="flex items-center gap-3">
+              <button
+                type="button"
+                class="rounded-xl border border-slate-200 bg-white px-4 py-2 text-sm font-medium text-slate-600 transition hover:bg-slate-50 dark:border-slate-700 dark:bg-slate-800 dark:text-slate-300 dark:hover:bg-slate-700"
+                @click="emit('close')"
+              >
+                取消
+              </button>
+              <button
+                type="submit"
+                class="rounded-xl bg-brand px-5 py-2 text-sm font-semibold text-white transition hover:bg-brand/90 disabled:cursor-not-allowed disabled:opacity-60"
+                :disabled="loading"
+              >
+                {{ loading ? "登录中..." : "登录" }}
+              </button>
+            </div>
+          </div>
+        </form>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+import { ref } from "vue";
+
+import type { FlarumLoginPayload } from "@/global/typedefinition";
+
+defineProps<{
+  show: boolean;
+  loading: boolean;
+  error: string;
+}>();
+
+const emit = defineEmits<{
+  close: [];
+  login: [payload: FlarumLoginPayload];
+  register: [];
+}>();
+
+const identification = ref("");
+const password = ref("");
+
+const submitLogin = () => {
+  emit("login", {
+    identification: identification.value.trim(),
+    password: password.value.trim(),
+  });
+};
+</script>
diff --git a/src/components/LoginPromptModal.vue b/src/components/LoginPromptModal.vue
new file mode 100644
index 00000000..bc656ac2
--- /dev/null
+++ b/src/components/LoginPromptModal.vue
@@ -0,0 +1,58 @@
+<template>
+  <Teleport to="body">
+    <Transition
+      enter-active-class="transition duration-200 ease-out"
+      enter-from-class="opacity-0"
+      enter-to-class="opacity-100"
+      leave-active-class="transition duration-150 ease-in"
+      leave-from-class="opacity-100"
+      leave-to-class="opacity-0"
+    >
+      <div
+        v-if="show"
+        class="fixed inset-0 z-[85] flex items-center justify-center bg-black/50 p-4 backdrop-blur-sm"
+        @click.self="emit('close')"
+      >
+        <div
+          class="w-full max-w-sm rounded-3xl border border-slate-200 bg-white p-6 shadow-2xl dark:border-slate-700 dark:bg-slate-900"
+        >
+          <h2 class="text-xl font-bold text-slate-900 dark:text-white">
+            需要登录
+          </h2>
+          <p class="mt-3 text-sm leading-6 text-slate-500 dark:text-slate-400">
+            {{ message }}
+          </p>
+          <div class="mt-6 flex items-center justify-end gap-3">
+            <button
+              type="button"
+              class="rounded-xl px-4 py-2 text-sm font-medium text-slate-500 transition hover:bg-slate-100 dark:text-slate-300 dark:hover:bg-slate-800"
+              @click="emit('register')"
+            >
+              注册账号
+            </button>
+            <button
+              type="button"
+              class="rounded-xl bg-brand px-5 py-2 text-sm font-semibold text-white transition hover:bg-brand/90"
+              @click="emit('login')"
+            >
+              登录
+            </button>
+          </div>
+        </div>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script setup lang="ts">
+defineProps<{
+  show: boolean;
+  message: string;
+}>();
+
+const emit = defineEmits<{
+  close: [];
+  login: [];
+  register: [];
+}>();
+</script>
diff --git a/src/components/ReviewsPanel.vue b/src/components/ReviewsPanel.vue
new file mode 100644
index 00000000..b6ae6049
--- /dev/null
+++ b/src/components/ReviewsPanel.vue
@@ -0,0 +1,217 @@
+<template>
+  <section
+    class="rounded-2xl border border-slate-200/60 bg-slate-50/50 p-5 dark:border-slate-800/60 dark:bg-slate-800/30"
+  >
+    <div class="mb-4 flex items-center justify-between gap-3">
+      <h2 class="flex items-center gap-2 text-base font-semibold">
+        <i class="fas fa-comments text-slate-400"></i>
+        应用评价
+      </h2>
+      <p class="text-sm text-slate-500 dark:text-slate-400">
+        {{ ratingText }}
+      </p>
+    </div>
+
+    <dl class="mb-4 grid gap-2 text-xs text-slate-500 sm:grid-cols-2">
+      <div
+        class="flex justify-between gap-3 rounded-xl bg-white px-3 py-2 dark:bg-slate-900/60"
+      >
+        <dt>版本</dt>
+        <dd class="font-medium text-slate-700 dark:text-slate-300">
+          {{ tags.version }}
+        </dd>
+      </div>
+      <div
+        class="flex justify-between gap-3 rounded-xl bg-white px-3 py-2 dark:bg-slate-900/60"
+      >
+        <dt>发行版</dt>
+        <dd class="font-medium text-slate-700 dark:text-slate-300">
+          {{ tags.distro }}
+        </dd>
+      </div>
+      <div
+        class="flex justify-between gap-3 rounded-xl bg-white px-3 py-2 dark:bg-slate-900/60"
+      >
+        <dt>架构</dt>
+        <dd class="font-medium text-slate-700 dark:text-slate-300">
+          {{ tags.packageArch }}
+        </dd>
+      </div>
+      <div
+        class="flex justify-between gap-3 rounded-xl bg-white px-3 py-2 dark:bg-slate-900/60"
+      >
+        <dt>来源</dt>
+        <dd class="font-medium uppercase text-slate-700 dark:text-slate-300">
+          {{ tags.origin }}
+        </dd>
+      </div>
+    </dl>
+
+    <button
+      v-if="!loggedIn"
+      type="button"
+      class="mb-4 inline-flex items-center rounded-xl bg-slate-800 px-4 py-2 text-sm font-medium text-white transition hover:bg-slate-700 dark:bg-slate-700 dark:hover:bg-slate-600"
+      @click="emit('request-login', '登录后发表评论')"
+    >
+      登录后发表评论
+    </button>
+
+    <form v-else class="mb-4 space-y-3" @submit.prevent="submit">
+      <label
+        class="block text-sm font-medium text-slate-600 dark:text-slate-300"
+      >
+        评分
+        <select
+          v-model.number="rating"
+          class="mt-1 block w-full rounded-xl border border-slate-200 bg-white px-3 py-2 text-sm dark:border-slate-700 dark:bg-slate-900"
+        >
+          <option v-for="value in ratingOptions" :key="value" :value="value">
+            {{ value }} 星
+          </option>
+        </select>
+      </label>
+      <label
+        class="block text-sm font-medium text-slate-600 dark:text-slate-300"
+      >
+        评论
+        <textarea
+          v-model="content"
+          rows="3"
+          class="mt-1 block w-full rounded-xl border border-slate-200 bg-white px-3 py-2 text-sm dark:border-slate-700 dark:bg-slate-900"
+          placeholder="分享你的使用体验"
+        ></textarea>
+      </label>
+      <button
+        type="submit"
+        class="inline-flex items-center rounded-xl bg-blue-600 px-4 py-2 text-sm font-medium text-white transition hover:bg-blue-500 disabled:opacity-50"
+        :disabled="submitting"
+      >
+        发表评论
+      </button>
+    </form>
+
+    <p v-if="loading" class="text-sm text-slate-400">正在加载评价...</p>
+    <p v-else-if="error" class="text-sm text-rose-500">{{ error }}</p>
+    <div v-else-if="reviews.length" class="space-y-3">
+      <article
+        v-for="review in reviews"
+        :key="review.id"
+        class="rounded-xl bg-white p-3 text-sm dark:bg-slate-900/60"
+      >
+        <div class="flex items-center justify-between gap-3">
+          <strong class="text-slate-700 dark:text-slate-200">
+            {{ review.userDisplayName || "星火用户" }}
+          </strong>
+          <span class="text-xs text-slate-400">{{ review.rating }} 星</span>
+        </div>
+        <p class="mt-2 whitespace-pre-wrap text-slate-600 dark:text-slate-300">
+          {{ review.content || "暂无评论内容" }}
+        </p>
+      </article>
+    </div>
+    <p v-else class="text-sm text-slate-400">暂无评价</p>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from "vue";
+
+import {
+  fetchRatingSummary,
+  fetchReviews,
+  submitReview,
+} from "@/modules/backendApi";
+import type {
+  AppReview,
+  RatingSummary,
+  ReviewTags,
+} from "@/global/typedefinition";
+
+const props = defineProps<{
+  appKey: string;
+  tags: ReviewTags;
+  loggedIn: boolean;
+}>();
+
+const emit = defineEmits<{
+  "request-login": [message: string];
+}>();
+
+const ratingOptions = [5, 4, 3, 2, 1];
+const rating = ref(5);
+const content = ref("");
+const reviews = ref<AppReview[]>([]);
+const summary = ref<RatingSummary | null>(null);
+const loading = ref(false);
+const submitting = ref(false);
+const error = ref("");
+const loadGeneration = ref(0);
+
+const ratingText = computed(() => {
+  if (!summary.value || summary.value.reviewCount === 0) return "暂无评分";
+  return `${summary.value.averageRating.toFixed(1)} / 5 (${summary.value.reviewCount})`;
+});
+
+const clearReviewState = () => {
+  loadGeneration.value += 1;
+  reviews.value = [];
+  summary.value = null;
+  loading.value = false;
+  error.value = "";
+};
+
+const loadReviews = async () => {
+  if (!props.loggedIn || !props.appKey) {
+    clearReviewState();
+    return;
+  }
+  const generation = loadGeneration.value + 1;
+  loadGeneration.value = generation;
+  const appKey = props.appKey;
+  loading.value = true;
+  error.value = "";
+  try {
+    const [nextSummary, nextReviews] = await Promise.all([
+      fetchRatingSummary(appKey),
+      fetchReviews(appKey),
+    ]);
+    if (generation !== loadGeneration.value || appKey !== props.appKey) return;
+    summary.value = nextSummary;
+    reviews.value = nextReviews;
+  } catch (caught: unknown) {
+    if (generation !== loadGeneration.value || appKey !== props.appKey) return;
+    error.value = (caught as Error)?.message || "加载评价失败";
+  } finally {
+    if (generation === loadGeneration.value && appKey === props.appKey) {
+      loading.value = false;
+    }
+  }
+};
+
+const submit = async () => {
+  const appKey = props.appKey;
+  const tags = props.tags;
+  submitting.value = true;
+  error.value = "";
+  try {
+    await submitReview(appKey, {
+      rating: rating.value,
+      content: content.value.trim(),
+      tags,
+    });
+    if (appKey !== props.appKey) return;
+    content.value = "";
+    await loadReviews();
+  } catch (caught: unknown) {
+    if (appKey !== props.appKey) return;
+    error.value = (caught as Error)?.message || "发表评论失败";
+  } finally {
+    if (appKey === props.appKey) {
+      submitting.value = false;
+    }
+  }
+};
+
+onMounted(loadReviews);
+watch(() => [props.appKey, props.loggedIn], loadReviews);
+</script>
diff --git a/src/components/UserManagementView.vue b/src/components/UserManagementView.vue
new file mode 100644
index 00000000..0f7711c8
--- /dev/null
+++ b/src/components/UserManagementView.vue
@@ -0,0 +1,184 @@
+<template>
+  <section
+    class="space-y-6 rounded-3xl border border-slate-200 bg-white p-6 shadow-sm dark:border-slate-800 dark:bg-slate-900"
+  >
+    <div
+      class="flex flex-col gap-5 sm:flex-row sm:items-center sm:justify-between"
+    >
+      <div class="flex items-center gap-4">
+        <img
+          v-if="user.avatarUrl"
+          :src="user.avatarUrl"
+          :alt="user.displayName"
+          class="h-16 w-16 rounded-2xl border border-slate-200 object-cover dark:border-slate-700"
+        />
+        <div
+          v-else
+          class="flex h-16 w-16 items-center justify-center rounded-2xl bg-slate-100 text-2xl font-semibold text-slate-500 dark:bg-slate-800 dark:text-slate-300"
+        >
+          {{ userInitial }}
+        </div>
+        <div>
+          <h1 class="text-2xl font-semibold text-slate-900 dark:text-white">
+            用户管理
+          </h1>
+          <p
+            class="mt-1 text-lg font-medium text-slate-800 dark:text-slate-100"
+          >
+            {{ user.displayName }}
+          </p>
+          <p class="text-sm text-slate-500 dark:text-slate-400">
+            @{{ user.username }}
+          </p>
+          <p class="text-sm text-slate-500 dark:text-slate-400">
+            {{ user.forumLevel }}
+          </p>
+        </div>
+      </div>
+
+      <div class="flex flex-wrap gap-2">
+        <button
+          type="button"
+          class="rounded-full border border-slate-200 px-4 py-2 text-sm font-medium text-slate-700 transition hover:border-sky-300 hover:text-sky-600 dark:border-slate-700 dark:text-slate-200 dark:hover:border-sky-500 dark:hover:text-sky-300"
+          @click="emit('open-forum')"
+        >
+          论坛首页
+        </button>
+        <button
+          type="button"
+          class="rounded-full bg-sky-600 px-4 py-2 text-sm font-medium text-white transition hover:bg-sky-500"
+          @click="emit('edit-profile')"
+        >
+          修改论坛资料
+        </button>
+      </div>
+    </div>
+
+    <div
+      v-if="visibleForumGroups.length > 0"
+      class="flex flex-wrap gap-2 text-sm text-slate-600 dark:text-slate-300"
+    >
+      <span
+        v-for="group in visibleForumGroups"
+        :key="group"
+        class="rounded-full bg-slate-100 px-3 py-1 dark:bg-slate-800"
+      >
+        {{ group }}
+      </span>
+    </div>
+
+    <div
+      class="flex flex-col gap-4 rounded-2xl border border-slate-200 bg-slate-50 p-4 dark:border-slate-800 dark:bg-slate-950/40 sm:flex-row sm:items-center sm:justify-between"
+    >
+      <label
+        class="flex items-center gap-3 text-sm font-medium text-slate-700 dark:text-slate-200"
+      >
+        <input
+          type="checkbox"
+          class="h-4 w-4 rounded border-slate-300 text-sky-600 focus:ring-sky-500"
+          aria-label="自动同步已安装应用"
+          :checked="syncEnabled"
+          @change="handleSyncToggle"
+        />
+        自动同步已安装应用
+      </label>
+      <button
+        type="button"
+        class="rounded-full border border-slate-200 px-4 py-2 text-sm font-medium text-slate-700 transition hover:border-sky-300 hover:text-sky-600 dark:border-slate-700 dark:text-slate-200 dark:hover:border-sky-500 dark:hover:text-sky-300"
+        @click="emit('sync-now')"
+      >
+        立即同步
+      </button>
+    </div>
+
+    <section class="space-y-4">
+      <div class="flex items-center justify-between gap-4">
+        <div>
+          <h2 class="text-lg font-semibold text-slate-900 dark:text-white">
+            下载历史
+          </h2>
+          <p class="text-sm text-slate-500 dark:text-slate-400">
+            最近通过当前账号记录的应用安装历史。
+          </p>
+        </div>
+        <button
+          type="button"
+          class="rounded-full border border-slate-200 px-4 py-2 text-sm font-medium text-slate-700 transition hover:border-sky-300 hover:text-sky-600 disabled:cursor-not-allowed disabled:opacity-50 dark:border-slate-700 dark:text-slate-200 dark:hover:border-sky-500 dark:hover:text-sky-300"
+          :disabled="loading"
+          @click="emit('refresh-downloads')"
+        >
+          刷新
+        </button>
+      </div>
+
+      <p v-if="loading" class="text-sm text-slate-500 dark:text-slate-400">
+        正在加载下载历史...
+      </p>
+      <p v-else-if="error" class="text-sm text-red-600 dark:text-red-400">
+        {{ error }}
+      </p>
+      <p
+        v-else-if="downloadedApps.length === 0"
+        class="text-sm text-slate-500 dark:text-slate-400"
+      >
+        暂无下载记录。
+      </p>
+      <ul v-else class="divide-y divide-slate-200 dark:divide-slate-800">
+        <li
+          v-for="app in downloadedApps"
+          :key="app.id"
+          class="flex flex-col gap-1 py-4 sm:flex-row sm:items-center sm:justify-between"
+        >
+          <div>
+            <p class="font-medium text-slate-900 dark:text-white">
+              {{ app.name }}
+            </p>
+            <p class="text-sm text-slate-500 dark:text-slate-400">
+              {{ app.pkgname }} · {{ app.category }}
+            </p>
+          </div>
+          <p class="text-sm text-slate-500 dark:text-slate-400">
+            {{ app.selectedOrigin.toUpperCase() }} · {{ app.version }} ·
+            {{ app.packageArch }}
+          </p>
+        </li>
+      </ul>
+    </section>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { computed } from "vue";
+
+import type { DownloadedAppRecord, SparkUser } from "@/global/typedefinition";
+
+const props = defineProps<{
+  user: SparkUser;
+  downloadedApps: DownloadedAppRecord[];
+  syncEnabled: boolean;
+  loading: boolean;
+  error: string;
+}>();
+
+const emit = defineEmits<{
+  "open-forum": [];
+  "edit-profile": [];
+  "toggle-sync": [enabled: boolean];
+  "sync-now": [];
+  "refresh-downloads": [];
+}>();
+
+const userInitial = computed(() =>
+  (props.user.displayName || props.user.username || "?").slice(0, 1),
+);
+
+const visibleForumGroups = computed(() =>
+  props.user.forumGroups.filter((group) => group !== props.user.forumLevel),
+);
+
+const handleSyncToggle = (event: Event): void => {
+  const target = event.target;
+  if (!(target instanceof HTMLInputElement)) return;
+  emit("toggle-sync", target.checked);
+};
+</script>
diff --git a/src/global/accountSyncState.ts b/src/global/accountSyncState.ts
new file mode 100644
index 00000000..7b7d2958
--- /dev/null
+++ b/src/global/accountSyncState.ts
@@ -0,0 +1,39 @@
+import { ref, watch } from "vue";
+
+const INSTALLED_SYNC_STORAGE_KEY = "spark-store-installed-sync-enabled";
+let activeSyncUserId: number | null = null;
+
+const syncStorageKey = (userId: number | null): string =>
+  userId === null
+    ? INSTALLED_SYNC_STORAGE_KEY
+    : `${INSTALLED_SYNC_STORAGE_KEY}:${userId}`;
+
+const readSyncEnabled = (userId: number | null): boolean | null => {
+  const savedValue = localStorage.getItem(syncStorageKey(userId));
+  if (savedValue === "true") return true;
+  if (savedValue === "false") return false;
+  return null;
+};
+
+export const installedSyncEnabled = ref<boolean | null>(
+  readSyncEnabled(activeSyncUserId),
+);
+
+export const loadInstalledSyncPreference = (userId: number | null): void => {
+  activeSyncUserId = userId;
+  installedSyncEnabled.value = readSyncEnabled(userId);
+};
+
+export const setInstalledSyncEnabled = (enabled: boolean): void => {
+  installedSyncEnabled.value = enabled;
+  localStorage.setItem(syncStorageKey(activeSyncUserId), String(enabled));
+};
+
+watch(installedSyncEnabled, (enabled) => {
+  if (enabled === null) {
+    localStorage.removeItem(syncStorageKey(activeSyncUserId));
+    return;
+  }
+
+  localStorage.setItem(syncStorageKey(activeSyncUserId), String(enabled));
+});
diff --git a/src/global/authState.ts b/src/global/authState.ts
new file mode 100644
index 00000000..1751002d
--- /dev/null
+++ b/src/global/authState.ts
@@ -0,0 +1,62 @@
+import { computed, ref } from "vue";
+
+import { setBackendToken } from "@/modules/backendApi";
+import type { AuthSession, SparkUser } from "./typedefinition";
+
+const AUTH_STORAGE_KEY = "spark-store-auth";
+
+const isSparkUser = (value: unknown): value is SparkUser => {
+  if (!value || typeof value !== "object" || Array.isArray(value)) return false;
+  const user = value as Record<string, unknown>;
+  return (
+    typeof user.id === "number" &&
+    typeof user.flarumUserId === "string" &&
+    typeof user.username === "string" &&
+    typeof user.displayName === "string" &&
+    typeof user.avatarUrl === "string" &&
+    typeof user.forumLevel === "string" &&
+    Array.isArray(user.forumGroups) &&
+    user.forumGroups.every((group) => typeof group === "string")
+  );
+};
+
+const isAuthSession = (value: unknown): value is AuthSession => {
+  if (!value || typeof value !== "object" || Array.isArray(value)) return false;
+  const session = value as Record<string, unknown>;
+  return (
+    typeof session.accessToken === "string" &&
+    session.accessToken.length > 0 &&
+    session.tokenType === "bearer" &&
+    isSparkUser(session.user)
+  );
+};
+
+const loadStoredSession = (): AuthSession | null => {
+  const raw = localStorage.getItem(AUTH_STORAGE_KEY);
+  if (!raw) return null;
+
+  try {
+    const parsed: unknown = JSON.parse(raw);
+    return isAuthSession(parsed) ? parsed : null;
+  } catch {
+    return null;
+  }
+};
+
+export const authSession = ref<AuthSession | null>(loadStoredSession());
+export const currentUser = computed(() => authSession.value?.user ?? null);
+export const isLoggedIn = computed(() => authSession.value !== null);
+
+setBackendToken(authSession.value?.accessToken ?? null);
+
+export const setAuthSession = (session: AuthSession): void => {
+  authSession.value = session;
+  localStorage.setItem(AUTH_STORAGE_KEY, JSON.stringify(session));
+  setBackendToken(session.accessToken);
+};
+
+export const logout = (): void => {
+  authSession.value = null;
+  localStorage.removeItem(AUTH_STORAGE_KEY);
+  setBackendToken(null);
+};
diff --git a/src/global/storeConfig.ts b/src/global/storeConfig.ts
index 8113a59f..d5de8b4b 100644
--- a/src/global/storeConfig.ts
+++ b/src/global/storeConfig.ts
@@ -7,6 +7,17 @@ export const APM_STORE_BASE_URL: string =
 export const APM_STORE_STATS_BASE_URL: string =
   import.meta.env.VITE_APM_STORE_STATS_BASE_URL || "";
 
+export const DEFAULT_SPARK_BACKEND_BASE_URL = "http://127.0.0.1:8000";
+
+export const SPARK_BACKEND_BASE_URL: string =
+  import.meta.env.VITE_SPARK_BACKEND_BASE_URL ||
+  DEFAULT_SPARK_BACKEND_BASE_URL;
+
+export const FLARUM_BASE_URL = "https://bbs.spark-app.store";
+export const FLARUM_REGISTER_URL = `${FLARUM_BASE_URL}/register`;
+export const FLARUM_PROFILE_URL = `${FLARUM_BASE_URL}/u`;
+export const FLARUM_SETTINGS_URL = `${FLARUM_BASE_URL}/settings`;
+
 // 下面的变量用于存储当前应用的信息，其实用在多个组件中
 export const currentApp = ref<App | null>(null);
 export const currentAppSparkInstalled = ref(false);
diff --git a/src/global/typedefinition.ts b/src/global/typedefinition.ts
index f2f7ccd6..135848c7 100644
--- a/src/global/typedefinition.ts
+++ b/src/global/typedefinition.ts
@@ -249,3 +249,130 @@ export interface SidebarEntry {
   type?: "category" | "search" | "link";
   value?: string;
 }
+
+export interface SparkUser {
+  id: number;
+  flarumUserId: string;
+  username: string;
+  displayName: string;
+  avatarUrl: string;
+  forumLevel: string;
+  forumGroups: string[];
+}
+
+export interface AuthSession {
+  accessToken: string;
+  tokenType: "bearer";
+  user: SparkUser;
+}
+
+export interface FlarumLoginPayload {
+  identification: string;
+  password: string;
+}
+
+export interface ReviewTags {
+  origin: "spark" | "apm";
+  category: string;
+  pkgname: string;
+  version: string;
+  packageArch: string;
+  clientArch: string;
+  distro: string;
+}
+
+export interface RatingSummary {
+  averageRating: number;
+  reviewCount: number;
+  starCounts: Record<number, number>;
+}
+
+export interface AppReview {
+  id: number;
+  rating: number;
+  content: string;
+  version: string;
+  packageArch: string;
+  clientArch: string;
+  distro: string;
+  origin: "spark" | "apm";
+  category: string;
+  createdAt: string;
+  updatedAt: string;
+  userDisplayName: string;
+  userAvatarUrl: string;
+}
+
+export interface FavoriteFolder {
+  id: number;
+  name: string;
+  itemCount: number;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface FavoriteItem {
+  id: number;
+  appKey: string;
+  pkgname: string;
+  name: string;
+  category: string;
+  iconUrl: string;
+  createdAt: string;
+}
+
+export type FavoriteAvailabilityStatus =
+  | "installable"
+  | "installed"
+  | "platform-unavailable"
+  | "arch-unavailable"
+  | "downlisted";
+
+export interface ResolvedFavoriteItem {
+  item: FavoriteItem;
+  status: FavoriteAvailabilityStatus;
+  reason: string;
+  selectedApp: App | null;
+}
+
+export interface DownloadedAppRecord {
+  id: number;
+  appKey: string;
+  pkgname: string;
+  name: string;
+  category: string;
+  selectedOrigin: "spark" | "apm";
+  version: string;
+  packageArch: string;
+  downloadedAt: string;
+}
+
+export interface DownloadedAppList {
+  items: DownloadedAppRecord[];
+  total: number;
+  page: number;
+  pageSize: number;
+}
+
+export interface SyncedAppListItem {
+  id?: number;
+  pkgname: string;
+  origin: "spark" | "apm";
+  category: string;
+  version: string;
+  packageArch: string;
+  appName: string;
+  iconUrl: string;
+}
+
+export interface SyncedAppList {
+  snapshotName: string;
+  clientArch: string;
+  distro: string;
+  updatedAt: string;
+  items: SyncedAppListItem[];
+}
+
+export interface SystemInfo {
+  distro: string;
+}
diff --git a/src/modules/appIdentity.ts b/src/modules/appIdentity.ts
new file mode 100644
index 00000000..7cf59e43
--- /dev/null
+++ b/src/modules/appIdentity.ts
@@ -0,0 +1,45 @@
+import type { App, ReviewTags } from "@/global/typedefinition";
+
+export const parsePackageArch = (filename: string): string => {
+  const match = filename.match(/_([^_]+)\.deb$/);
+  return match?.[1] || "unknown";
+};
+
+export const buildStoreArch = (
+  origin: "spark" | "apm",
+  clientArch: string,
+): string => {
+  const rawArch = clientArch.replace(/-(store|apm)$/, "");
+  return `${rawArch}-${origin === "spark" ? "store" : "apm"}`;
+};
+
+export const buildFavoriteAppKey = (app: App): string => {
+  return `app:${app.category || "unknown"}:${app.pkgname}`;
+};
+
+export const buildReviewAppKey = (app: App, clientArch: string): string => {
+  return `${app.origin}:${buildStoreArch(app.origin, clientArch)}:${app.category || "unknown"}:${app.pkgname}`;
+};
+
+export const getDisplayApp = (app: App | null): App | null => {
+  if (!app) return null;
+  if (!app.isMerged) return app;
+  if (app.viewingOrigin === "spark") return app.sparkApp ?? app.apmApp ?? app;
+  if (app.viewingOrigin === "apm") return app.apmApp ?? app.sparkApp ?? app;
+  return app.sparkApp ?? app.apmApp ?? app;
+};
+
+export const buildReviewTags = (
+  app: App,
+  options: { clientArch: string; distro: string },
+): ReviewTags => {
+  return {
+    origin: app.origin,
+    category: app.category || "unknown",
+    pkgname: app.pkgname,
+    version: app.version,
+    packageArch: parsePackageArch(app.filename),
+    clientArch: options.clientArch,
+    distro: options.distro,
+  };
+};
diff --git a/src/modules/appListSync.ts b/src/modules/appListSync.ts
new file mode 100644
index 00000000..86d144de
--- /dev/null
+++ b/src/modules/appListSync.ts
@@ -0,0 +1,49 @@
+import type { App, SyncedAppListItem } from "@/global/typedefinition";
+import { parsePackageArch } from "@/modules/appIdentity";
+
+const hasUsablePackageIdentity = (app: App): boolean => {
+  return app.pkgname.trim().length > 0 && Boolean(app.origin);
+};
+
+export const buildSyncItems = (apps: App[]): SyncedAppListItem[] => {
+  return apps
+    .filter(
+      (app) =>
+        app.currentStatus === "installed" &&
+        app.category !== "unknown" &&
+        !app.isDependency &&
+        hasUsablePackageIdentity(app),
+    )
+    .map((app) => ({
+      pkgname: app.pkgname,
+      origin: app.origin,
+      category: app.category,
+      version: app.version,
+      packageArch: app.arch || parsePackageArch(app.filename),
+      appName: app.name || app.pkgname,
+      iconUrl: app.icons || "",
+    }));
+};
+
+export const cloudItemKey = (
+  item: Pick<SyncedAppListItem, "origin" | "pkgname">,
+): string => `${item.origin}:${item.pkgname}`;
+
+export const mergeInstalledApps = (
+  currentApps: App[],
+  refreshedApps: App[],
+  refreshedOrigins: Array<"spark" | "apm">,
+): App[] => {
+  const refreshedKeys = new Set(
+    refreshedApps.map((app) => `${app.origin}:${app.pkgname}`),
+  );
+
+  return [
+    ...currentApps.filter(
+      (app) =>
+        !refreshedOrigins.includes(app.origin) &&
+        !refreshedKeys.has(`${app.origin}:${app.pkgname}`),
+    ),
+    ...refreshedApps,
+  ];
+};
diff --git a/src/modules/backendApi.ts b/src/modules/backendApi.ts
new file mode 100644
index 00000000..fbd61d40
--- /dev/null
+++ b/src/modules/backendApi.ts
@@ -0,0 +1,381 @@
+import axios, { type AxiosResponse } from "axios";
+import pino from "pino";
+
+import { SPARK_BACKEND_BASE_URL } from "@/global/storeConfig";
+import type {
+  AppReview,
+  AuthSession,
+  DownloadedAppList,
+  DownloadedAppRecord,
+  FavoriteFolder,
+  FavoriteItem,
+  RatingSummary,
+  ReviewTags,
+  SparkUser,
+  SyncedAppList,
+  SyncedAppListItem,
+} from "@/global/typedefinition";
+
+const backend = axios.create({
+  baseURL: SPARK_BACKEND_BASE_URL,
+  timeout: 10000,
+});
+const logger = pino({ name: "backendApi" });
+
+type ApiRecord = Record<string, unknown>;
+
+const normalizeBackendAuthError = (error: unknown): Error => {
+  if (!axios.isAxiosError(error)) {
+    return error instanceof Error ? error : new Error("登录失败，请稍后重试。");
+  }
+
+  logger.error(
+    {
+      code: error.code,
+      message: error.message,
+      status: error.response?.status,
+    },
+    "Spark backend auth exchange failed",
+  );
+
+  if (!error.response) {
+    return new Error("无法连接星火账号服务，请确认后端服务已启动或稍后重试。");
+  }
+
+  const status = error.response.status;
+  if (status === 401) {
+    return new Error("论坛登录失败，请检查账号和密码。");
+  }
+  if (status === 503) {
+    return new Error("星火账号服务暂时无法连接论坛，请稍后重试。");
+  }
+  if (status === 500) {
+    return new Error("星火账号服务异常，请确认后端数据库迁移已执行后重试。");
+  }
+
+  return new Error(`星火账号服务返回异常 (${status})，请稍后重试。`);
+};
+
+const asApiRecord = (value: unknown): ApiRecord => {
+  if (value && typeof value === "object" && !Array.isArray(value)) {
+    return value as ApiRecord;
+  }
+  return {};
+};
+
+const asApiRecordArray = (value: unknown): ApiRecord[] => {
+  if (!Array.isArray(value)) return [];
+  return value.map(asApiRecord);
+};
+
+export const parseForumGroups = (raw: unknown): string[] => {
+  if (Array.isArray(raw)) {
+    return raw.filter((item): item is string => typeof item === "string");
+  }
+  if (typeof raw !== "string" || raw.length === 0) return [];
+
+  try {
+    const parsed: unknown = JSON.parse(raw);
+    return Array.isArray(parsed)
+      ? parsed.filter((item): item is string => typeof item === "string")
+      : [];
+  } catch {
+    return [];
+  }
+};
+
+const toUser = (raw: ApiRecord): SparkUser => ({
+  id: Number(raw.id),
+  flarumUserId: String(raw.flarum_user_id || ""),
+  username: String(raw.username || ""),
+  displayName: String(raw.display_name || raw.username || ""),
+  avatarUrl: String(raw.avatar_url || ""),
+  forumLevel: String(raw.forum_level || "论坛用户"),
+  forumGroups: parseForumGroups(raw.forum_groups),
+});
+
+const toReview = (raw: ApiRecord): AppReview => ({
+  id: Number(raw.id),
+  rating: Number(raw.rating),
+  content: String(raw.content || ""),
+  version: String(raw.version || "unknown"),
+  packageArch: String(raw.package_arch || "unknown"),
+  clientArch: String(raw.client_arch || "unknown"),
+  distro: String(raw.distro || "unknown"),
+  origin: raw.origin === "spark" ? "spark" : "apm",
+  category: String(raw.category || ""),
+  createdAt: String(raw.created_at || ""),
+  updatedAt: String(raw.updated_at || ""),
+  userDisplayName: String(raw.user_display_name || ""),
+  userAvatarUrl: String(raw.user_avatar_url || ""),
+});
+
+const toFavoriteFolder = (raw: ApiRecord): FavoriteFolder => ({
+  id: Number(raw.id),
+  name: String(raw.name || ""),
+  itemCount: Number(raw.item_count || 0),
+  createdAt: String(raw.created_at || ""),
+  updatedAt: String(raw.updated_at || ""),
+});
+
+const toFavoriteItem = (raw: ApiRecord): FavoriteItem => ({
+  id: Number(raw.id),
+  appKey: String(raw.app_key || ""),
+  pkgname: String(raw.pkgname || ""),
+  name: String(raw.name || ""),
+  category: String(raw.category || ""),
+  iconUrl: String(raw.icon_url || ""),
+  createdAt: String(raw.created_at || ""),
+});
+
+const toDownloadedApp = (raw: ApiRecord): DownloadedAppRecord => ({
+  id: Number(raw.id),
+  appKey: String(raw.app_key || ""),
+  pkgname: String(raw.pkgname || ""),
+  name: String(raw.name || ""),
+  category: String(raw.category || ""),
+  selectedOrigin: raw.selected_origin === "spark" ? "spark" : "apm",
+  version: String(raw.version || ""),
+  packageArch: String(raw.package_arch || "unknown"),
+  downloadedAt: String(raw.downloaded_at || ""),
+});
+
+const toSyncedAppListItem = (raw: ApiRecord): SyncedAppListItem => ({
+  id: raw.id === undefined ? undefined : Number(raw.id),
+  pkgname: String(raw.pkgname || ""),
+  origin: raw.origin === "spark" ? "spark" : "apm",
+  category: String(raw.category || ""),
+  version: String(raw.version || ""),
+  packageArch: String(raw.package_arch || "unknown"),
+  appName: String(raw.app_name || ""),
+  iconUrl: String(raw.icon_url || ""),
+});
+
+const toSyncedAppList = (
+  raw: ApiRecord,
+  fallback?: { clientArch: string; distro: string; items: SyncedAppListItem[] },
+): SyncedAppList => ({
+  snapshotName: String(raw.snapshot_name || "默认列表"),
+  clientArch: String(raw.client_arch || fallback?.clientArch || "unknown"),
+  distro: String(raw.distro || fallback?.distro || "unknown"),
+  updatedAt: String(raw.updated_at || ""),
+  items: raw.items
+    ? asApiRecordArray(raw.items).map(toSyncedAppListItem)
+    : fallback?.items || [],
+});
+
+export const setBackendToken = (token: string | null): void => {
+  const backendWithOptionalDefaults = backend as typeof backend & {
+    defaults?: { headers?: { common?: Record<string, unknown> } };
+  };
+  const commonHeaders = backendWithOptionalDefaults.defaults?.headers?.common;
+  if (!commonHeaders) return;
+
+  if (token) commonHeaders.Authorization = `Bearer ${token}`;
+  else delete commonHeaders.Authorization;
+};
+
+export const exchangeFlarumToken = async (payload: {
+  flarumUserId: string;
+  flarumToken: string;
+}): Promise<AuthSession> => {
+  let response: AxiosResponse;
+  try {
+    response = await backend.post("/auth/flarum", {
+      flarum_user_id: payload.flarumUserId,
+      flarum_token: payload.flarumToken,
+    });
+  } catch (error) {
+    throw normalizeBackendAuthError(error);
+  }
+  const data = asApiRecord(response.data);
+
+  return {
+    accessToken: String(data.access_token || ""),
+    tokenType: "bearer",
+    user: toUser(asApiRecord(data.user)),
+  };
+};
+
+export const fetchMe = async (): Promise<SparkUser> => {
+  const response = await backend.get("/me");
+  return toUser(asApiRecord(response.data));
+};
+
+export const fetchRatingSummary = async (
+  appKey: string,
+): Promise<RatingSummary> => {
+  const response = await backend.get(
+    `/apps/${encodeURIComponent(appKey)}/rating-summary`,
+  );
+  const data = asApiRecord(response.data);
+
+  return {
+    averageRating: Number(data.average_rating || 0),
+    reviewCount: Number(data.review_count || 0),
+    starCounts: Object.fromEntries(
+      Object.entries(asApiRecord(data.star_counts)).map(([key, value]) => [
+        Number(key),
+        Number(value),
+      ]),
+    ),
+  };
+};
+
+export const fetchReviews = async (appKey: string): Promise<AppReview[]> => {
+  const response = await backend.get(
+    `/apps/${encodeURIComponent(appKey)}/reviews`,
+  );
+  return asApiRecordArray(response.data).map(toReview);
+};
+
+export const submitReview = async (
+  appKey: string,
+  payload: { rating: number; content: string; tags: ReviewTags },
+): Promise<AppReview> => {
+  const response = await backend.post(
+    `/apps/${encodeURIComponent(appKey)}/reviews`,
+    {
+      rating: payload.rating,
+      content: payload.content,
+      tags: {
+        origin: payload.tags.origin,
+        category: payload.tags.category,
+        pkgname: payload.tags.pkgname,
+        version: payload.tags.version,
+        package_arch: payload.tags.packageArch,
+        client_arch: payload.tags.clientArch,
+        distro: payload.tags.distro,
+      },
+    },
+  );
+  return toReview(asApiRecord(response.data));
+};
+
+export const listFavoriteFolders = async (): Promise<FavoriteFolder[]> => {
+  const response = await backend.get("/me/favorite-folders");
+  return asApiRecordArray(response.data).map(toFavoriteFolder);
+};
+
+export const createFavoriteFolder = async (
+  name: string,
+): Promise<FavoriteFolder> => {
+  const response = await backend.post("/me/favorite-folders", { name });
+  return toFavoriteFolder(asApiRecord(response.data));
+};
+
+export const renameFavoriteFolder = async (
+  folderId: number,
+  name: string,
+): Promise<FavoriteFolder> => {
+  const response = await backend.patch(`/me/favorite-folders/${folderId}`, {
+    name,
+  });
+  return toFavoriteFolder(asApiRecord(response.data));
+};
+
+export const deleteFavoriteFolder = async (folderId: number): Promise<void> => {
+  await backend.delete(`/me/favorite-folders/${folderId}`);
+};
+
+export const listFavoriteItems = async (
+  folderId: number,
+): Promise<FavoriteItem[]> => {
+  const response = await backend.get(`/me/favorite-folders/${folderId}/items`);
+  return asApiRecordArray(response.data).map(toFavoriteItem);
+};
+
+export const addFavoriteItem = async (
+  folderId: number | "default",
+  item: Omit<FavoriteItem, "id" | "createdAt">,
+): Promise<FavoriteItem> => {
+  const response = await backend.post(
+    `/me/favorite-folders/${folderId}/items`,
+    {
+      app_key: item.appKey,
+      pkgname: item.pkgname,
+      name: item.name,
+      category: item.category,
+      icon_url: item.iconUrl,
+    },
+  );
+  return toFavoriteItem(asApiRecord(response.data));
+};
+
+export const deleteFavoriteItem = async (
+  folderId: number,
+  itemId: number,
+): Promise<void> => {
+  await backend.delete(`/me/favorite-folders/${folderId}/items/${itemId}`);
+};
+
+export const bulkDeleteFavoriteItems = async (
+  folderId: number,
+  itemIds: number[],
+): Promise<number> => {
+  const response = await backend.post(
+    `/me/favorite-folders/${folderId}/items/bulk-delete`,
+    { item_ids: itemIds },
+  );
+  return Number(asApiRecord(response.data).deleted_count || 0);
+};
+
+export const listDownloadedApps = async (
+  page = 1,
+  pageSize = 20,
+): Promise<DownloadedAppList> => {
+  const response = await backend.get("/me/downloaded-apps", {
+    params: { page, page_size: pageSize },
+  });
+  const data = asApiRecord(response.data);
+
+  return {
+    items: asApiRecordArray(data.items).map(toDownloadedApp),
+    total: Number(data.total || 0),
+    page: Number(data.page || page),
+    pageSize: Number(data.page_size || pageSize),
+  };
+};
+
+export const recordDownloadedApp = async (
+  item: Omit<DownloadedAppRecord, "id" | "downloadedAt">,
+): Promise<DownloadedAppRecord> => {
+  const response = await backend.post("/me/downloaded-apps", {
+    app_key: item.appKey,
+    pkgname: item.pkgname,
+    name: item.name,
+    category: item.category,
+    selected_origin: item.selectedOrigin,
+    version: item.version,
+    package_arch: item.packageArch,
+  });
+  return toDownloadedApp(asApiRecord(response.data));
+};
+
+export const fetchSyncedAppList = async (): Promise<SyncedAppList | null> => {
+  const response = await backend.get("/me/app-list");
+  if (!response.data) return null;
+  return toSyncedAppList(asApiRecord(response.data));
+};
+
+export const uploadSyncedAppList = async (payload: {
+  clientArch: string;
+  distro: string;
+  items: SyncedAppListItem[];
+}): Promise<SyncedAppList> => {
+  const response = await backend.put("/me/app-list", {
+    client_arch: payload.clientArch,
+    distro: payload.distro,
+    items: payload.items.map((item) => ({
+      pkgname: item.pkgname,
+      origin: item.origin,
+      category: item.category,
+      version: item.version,
+      package_arch: item.packageArch,
+      app_name: item.appName,
+      icon_url: item.iconUrl,
+    })),
+  });
+
+  return toSyncedAppList(asApiRecord(response.data), payload);
+};
diff --git a/src/modules/favoriteAvailability.ts b/src/modules/favoriteAvailability.ts
new file mode 100644
index 00000000..0c0ba399
--- /dev/null
+++ b/src/modules/favoriteAvailability.ts
@@ -0,0 +1,114 @@
+import { getHybridDefaultOrigin } from "@/global/storeConfig";
+import type {
+  App,
+  FavoriteItem,
+  ResolvedFavoriteItem,
+  StoreFilter,
+} from "@/global/typedefinition";
+
+type SourceAvailability = {
+  spark: boolean;
+  apm: boolean;
+};
+
+const normalizeArch = (arch: string): string =>
+  arch.replace(/-(store|apm)$/, "");
+
+const appMatchesFavorite = (app: App, item: FavoriteItem): boolean =>
+  app.pkgname === item.pkgname && app.category === item.category;
+
+const installedAppMatchesFavorite = (app: App, item: FavoriteItem): boolean =>
+  app.pkgname === item.pkgname &&
+  (app.category === item.category ||
+    app.category === "all" ||
+    app.category === "unknown");
+
+const appMatchesClientArch = (app: App, clientArch: string): boolean => {
+  if (!app.arch) return true;
+  return normalizeArch(app.arch) === normalizeArch(clientArch);
+};
+
+const sourceAllowed = (
+  origin: "spark" | "apm",
+  available: SourceAvailability,
+  storeFilter: StoreFilter,
+): boolean => {
+  if (!available[origin]) return false;
+  if (storeFilter === "both") return true;
+  return storeFilter === origin;
+};
+
+const choosePreferredApp = (apps: App[]): App => {
+  if (apps.length === 1) return apps[0];
+
+  const referenceApp = apps.find((app) => app.origin === "spark") ?? apps[0];
+  const preferredOrigin = getHybridDefaultOrigin(referenceApp);
+  return apps.find((app) => app.origin === preferredOrigin) ?? apps[0];
+};
+
+export const resolveFavoriteItems = (
+  items: FavoriteItem[],
+  catalogApps: App[],
+  installedApps: App[],
+  available: SourceAvailability,
+  storeFilter: StoreFilter,
+  clientArch = window.apm_store.arch || "amd64",
+): ResolvedFavoriteItem[] => {
+  return items.map((item) => {
+    const catalogMatches = catalogApps.filter((app) =>
+      appMatchesFavorite(app, item),
+    );
+
+    if (catalogMatches.length === 0) {
+      return {
+        item,
+        status: "downlisted",
+        reason: "已下架",
+        selectedApp: null,
+      };
+    }
+
+    const installedMatch = installedApps.find((app) =>
+      installedAppMatchesFavorite(app, item),
+    );
+    if (installedMatch) {
+      return {
+        item,
+        status: "installed",
+        reason: "已安装",
+        selectedApp: installedMatch,
+      };
+    }
+
+    const archMatches = catalogMatches.filter((app) =>
+      appMatchesClientArch(app, clientArch),
+    );
+    if (archMatches.length === 0) {
+      return {
+        item,
+        status: "arch-unavailable",
+        reason: "当前架构不可用",
+        selectedApp: null,
+      };
+    }
+
+    const sourceMatches = archMatches.filter((app) =>
+      sourceAllowed(app.origin, available, storeFilter),
+    );
+    if (sourceMatches.length === 0) {
+      return {
+        item,
+        status: "platform-unavailable",
+        reason: "当前来源不可用",
+        selectedApp: null,
+      };
+    }
+
+    return {
+      item,
+      status: "installable",
+      reason: "可安装",
+      selectedApp: choosePreferredApp(sourceMatches),
+    };
+  });
+};
diff --git a/src/modules/flarumAuth.ts b/src/modules/flarumAuth.ts
new file mode 100644
index 00000000..b136c24b
--- /dev/null
+++ b/src/modules/flarumAuth.ts
@@ -0,0 +1,60 @@
+import type { FlarumLoginPayload } from "@/global/typedefinition";
+
+type FlarumTokenResponse = {
+  token: string;
+  userId: string;
+};
+
+const asRecord = (value: unknown): Record<string, unknown> => {
+  if (value && typeof value === "object" && !Array.isArray(value)) {
+    return value as Record<string, unknown>;
+  }
+  return {};
+};
+
+const knownLoginErrorMessages = [
+  "无法连接星火论坛，请检查网络后重试。",
+  "论坛登录失败，请检查账号和密码。",
+  "论坛登录响应异常，请稍后重试。",
+  "登录信息格式不正确，请重新输入。",
+];
+
+const normalizeIpcError = (error: unknown): Error => {
+  if (!(error instanceof Error)) {
+    return new Error("登录失败，请稍后重试");
+  }
+
+  const knownMessage = knownLoginErrorMessages.find((message) =>
+    error.message.includes(message),
+  );
+  return knownMessage ? new Error(knownMessage) : error;
+};
+
+export const requestFlarumToken = async (
+  payload: FlarumLoginPayload,
+): Promise<FlarumTokenResponse> => {
+  let data: Record<string, unknown>;
+  try {
+    data = asRecord(
+      await window.ipcRenderer.invoke("request-flarum-token", payload),
+    );
+  } catch (error) {
+    throw normalizeIpcError(error);
+  }
+
+  const token = data.token;
+  const userId = data.userId ?? data.user_id;
+  if (
+    typeof token !== "string" ||
+    !token ||
+    userId === undefined ||
+    userId === null
+  ) {
+    throw new Error("论坛登录响应异常，请稍后重试。");
+  }
+
+  return {
+    token,
+    userId: String(userId),
+  };
+};
diff --git a/src/modules/processInstall.ts b/src/modules/processInstall.ts
index 67c77c61..397003a0 100644
--- a/src/modules/processInstall.ts
+++ b/src/modules/processInstall.ts
@@ -21,16 +21,18 @@ import axios from "axios";
 
 const logger = pino({ name: "processInstall.ts" });
 
-export const handleInstall = async (appObj?: App) => {
+export const handleInstall = async (
+  appObj?: App,
+): Promise<DownloadItem | null> => {
   const targetApp = appObj || currentApp.value;
-  if (!targetApp?.pkgname) return;
+  if (!targetApp?.pkgname) return null;
 
   // APM 应用：在创建下载任务前检查 APM 是否可用
   if (targetApp.origin === "apm") {
     const hasApm = await window.ipcRenderer.invoke("check-apm-available");
     if (!hasApm) {
       showApmInstallDialog.value = true;
-      return;
+      return null;
     }
   }
 
@@ -42,7 +44,7 @@ export const handleInstall = async (appObj?: App) => {
     logger.info(
       `任务已存在，忽略重复添加: ${targetApp.pkgname} (${targetApp.origin})`,
     );
-    return;
+    return null;
   }
 
   // 创建下载任务
@@ -98,6 +100,7 @@ export const handleInstall = async (appObj?: App) => {
     .then((response) => {
       logger.info("下载次数统计已发送，状态:", response.data);
     });
+  return download;
 };
 
 export const handleRetry = (download_: DownloadItem) => {
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index 3de6f018..1eca2b6e 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,7 +1,7 @@
 /* eslint-disable */
 /// <reference types="vite/client" />
 
-import type { UpdateCenterBridge } from "@/global/typedefinition";
+import type { SystemInfo, UpdateCenterBridge } from "@/global/typedefinition";
 
 declare module "*.vue" {
   import type { DefineComponent } from "vue";
@@ -10,6 +10,10 @@ declare module "*.vue" {
 }
 
 declare global {
+  interface ImportMetaEnv {
+    readonly VITE_SPARK_BACKEND_BASE_URL?: string;
+  }
+
   interface Window {
     // expose in the `electron/preload/index.ts`
     ipcRenderer: IpcRendererFacade;
@@ -30,6 +34,11 @@ interface IpcRendererFacade {
 // IPC channel type definitions
 declare interface IpcChannels {
   "get-app-version": () => string;
+  "get-system-info": () => Promise<SystemInfo>;
+  "request-flarum-token": (payload: {
+    identification: string;
+    password: string;
+  }) => Promise<{ token: string; userId: string }>;
 }
 
 declare const __APP_VERSION__: string;