Develop (#55)

feat: optimize dashboard/search UX and simplify extension architecture

Redesign Dashboard with compact tool grid and recently used tools
Improve TopBar search UX with Cmd/Ctrl+K shortcut and better history navigation
Reorganize project structure into src/
Migrate i18n from react-i18next to chrome.i18n
Remove runtime language switch and settings page
Remove HTML/Markdown conversion tools
Clean up unused code, dead animations, redundant comments, and imports
Improve component consistency with shadcn/ui patterns
Replace hardcoded strings/colors with i18n tokens and theme tokens
Add comprehensive project documentation and coding standards
Fix CI artifact upload workflow and multiple TypeScript/test issues

Includes various refactors, UI polish, i18n cleanup, CI improvements,
and maintenance updates across the codebase.

src/utils/qrCodeParser.ts

@@ -0,0 +1,33 @@
+import QrScanner from 'qr-scanner';
+
+export interface QrCodeParseResult {
+  success: boolean;
+  data?: string;
+  error?: string;
+}
+
+/**
+ * 从文件中解析二维码
+ * 使用 qr-scanner 替代 jsqr 以减小体积并提高性能
+ */
+export async function parseQrCodeFromFile(file: File): Promise<QrCodeParseResult> {
+  try {
+    const result = await QrScanner.scanImage(file, {
+      returnDetailedScanResult: true,
+    });
+
+    if (result && result.data) {
+      return { success: true, data: result.data };
+    } else {
+      return { success: false, error: '未检测到二维码' };
+    }
+  } catch (err) {
+    const errorMsg =
+      err === 'No QR code found'
+        ? '未检测到二维码'
+        : err instanceof Error
+          ? err.message
+          : String(err);
+    return { success: false, error: errorMsg };
+  }
+}