fix: 标签策略启动初始化加固 + 已安装应用过滤/统计性能优化

- 标签优先显示策略 initTagPriorityStrategy 提到 App.vue onMounted 统一调用，
  消除组件挂载顺序导致先读内存默认 auto 的竞态窗口（AppDetailModal 移除重复调用）
- InstalledAppsModal 过滤逻辑合并为单次遍历（保留 hasOrigin 双来源语义）
- 统计 apm/spark/total 改为基于 searchFilteredApps 单次遍历
- canOpenDetail 补充业务含义注释与可读性变量
- 将 App.vue 重构的 9 个 composable 纳入版本管理
- 验证：vue-tsc 0 / eslint 0 / dpkg-buildpackage 打包 spark-store_5.2.1.24-test 成功

src/composables/useDownloads.ts

@@ -0,0 +1,233 @@
+/**
+ * useDownloads —— 下载队列控制与安装触发。
+ *
+ * 从原 App.vue 原样搬移（pendingDownloadRecords / onDetailInstall /
+ * handleInstallCompleteForDownloadRecord / onDetailRemove / onDetailFavorite /
+ * pauseDownload / resumeDownload / cancelDownload / retryDownload /
+ * clearCompletedDownloads / showDownloadDetailModalFunc / closeDownloadDetail /
+ * openDownloadedApp / installCompleteCallback / watchDownloadsChange 注册），逻辑零改动。
+ *
+ * 共享状态来自 useAppState；handleInstall / handleRetry 来自 modules/processInstall；
+ * openFavoriteSelector 来自 useFavorites。
+ */
+import type {
+  App,
+  DownloadItem,
+  DownloadResult,
+  DownloadedAppRecord,
+} from "../global/typedefinition";
+import type { IpcRendererEvent } from "electron";
+import {
+  downloads,
+  currentDownload,
+  showDownloadDetailModal,
+  currentApp,
+} from "./useAppState";
+import { handleInstall, handleRetry } from "../modules/processInstall";
+import { watchDownloadsChange } from "../global/downloadStatus";
+import { buildFavoriteAppKey, parsePackageArch } from "../modules/appIdentity";
+import { openFavoriteSelector } from "./useFavorites";
+import { recordDownloadedApp } from "../modules/backendApi";
+import { isLoggedIn, currentUser } from "../global/authState";
+
+interface PendingDownloadRecord {
+  userId: number;
+  appKey: string;
+  pkgname: string;
+  name: string;
+  category: string;
+  selectedOrigin: "spark" | "apm";
+  version: string;
+  packageArch: string;
+}
+
+const pendingDownloadRecords = new Map<number, PendingDownloadRecord>();
+
+const onDetailInstall = async (app: 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) {
+    console.warn({ err: error }, "记录下载应用失败");
+  }
+};
+
+const onDetailRemove = (app: App) => {
+  requestUninstallRef(app);
+};
+
+const onDetailFavorite = async (app: App) => {
+  await openFavoriteSelector(app);
+};
+
+// 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);
+  if (download && download.status === "installing") {
+    // 'installing' matches type definition, previously 'downloading'
+    download.status = "paused";
+    download.logs.push({
+      time: Date.now(),
+      message: "下载已暂停",
+    });
+  }
+};
+
+// TODO: 同理，暂未实现
+const resumeDownload = (id: DownloadItem) => {
+  const download = downloads.value.find((d) => d.id === id.id);
+  if (download && download.status === "paused") {
+    download.status = "installing"; // previously 'downloading'
+    download.logs.push({
+      time: Date.now(),
+      message: "继续下载...",
+    });
+    // simulateDownload(download); // removed or undefined?
+  }
+};
+
+const cancelDownload = (id: DownloadItem) => {
+  const index = downloads.value.findIndex((d) => d.id === id.id);
+  if (index !== -1) {
+    const download = downloads.value[index];
+    // 发送到主进程取消
+    window.ipcRenderer.send("cancel-install", download.id);
+
+    download.status = "failed";
+    download.logs.push({
+      time: Date.now(),
+      message: "下载已取消",
+    });
+    // 保留在队列中以便用户可以重试或查看日志
+  }
+};
+
+const retryDownload = (id: DownloadItem) => {
+  const download = downloads.value.find((d) => d.id === id.id);
+  if (download && download.status === "failed") {
+    download.status = "queued";
+    download.progress = 0;
+    download.downloadedSize = 0;
+    download.logs.push({
+      time: Date.now(),
+      message: "重新开始下载...",
+    });
+    handleRetry(download);
+  }
+};
+
+const clearCompletedDownloads = () => {
+  downloads.value = downloads.value.filter((d) => d.status !== "completed");
+};
+
+const showDownloadDetailModalFunc = (download: DownloadItem) => {
+  currentDownload.value = download;
+  showDownloadDetailModal.value = true;
+};
+
+const closeDownloadDetail = () => {
+  showDownloadDetailModal.value = false;
+  currentDownload.value = null;
+};
+
+const openDownloadedApp = (pkgname: string, origin?: "spark" | "apm") => {
+  // const encodedPkg = encodeURIComponent(download.pkgname);
+  // openApmStoreUrl(`apmstore://launch?pkg=${encodedPkg}`, {
+  //   fallbackText: `打开应用: ${download.pkgname}`
+  // });
+  window.ipcRenderer
+    .invoke("launch-app", { pkgname, origin })
+    .catch((err) => console.error("启动应用失败 (launch-app):", err));
+};
+
+const installCompleteCallback = (pkgname?: string) => {
+  if (currentApp.value && (!pkgname || currentApp.value.pkgname === pkgname)) {
+    checkAppInstalledRef(currentApp.value);
+  }
+};
+
+watchDownloadsChange(installCompleteCallback);
+
+// checkAppInstalled 由 useAppDetail 持有，通过注入引用获取，避免循环依赖
+let checkAppInstalledRef: (app: App) => void = () => undefined;
+export const registerCheckAppInstalled = (fn: (app: App) => void) => {
+  checkAppInstalledRef = fn;
+};
+// requestUninstall 由 useInstalledApps 持有，通过注入引用获取，避免循环依赖
+let requestUninstallRef: (app: App) => void = () => undefined;
+export const registerRequestUninstall = (fn: (app: App) => void) => {
+  requestUninstallRef = fn;
+};
+// 登出时清空待下载记录（原 App.vue logout 中的 pendingDownloadRecords.clear()）
+export const clearPendingDownloadRecords = (): void => {
+  pendingDownloadRecords.clear();
+};
+
+// onDetailInstall 需要被 useFavorites / useAccountSync 调用，此处导出
+export {
+  pendingDownloadRecords,
+  onDetailInstall,
+  handleInstallCompleteForDownloadRecord,
+  onDetailRemove,
+  onDetailFavorite,
+  pauseDownload,
+  resumeDownload,
+  cancelDownload,
+  retryDownload,
+  clearCompletedDownloads,
+  showDownloadDetailModalFunc,
+  closeDownloadDetail,
+  openDownloadedApp,
+  installCompleteCallback,
+};