fix: e2e 类型声明 + ESLint 覆盖 e2e + backup 路径校验 + DX 脚本

- e2e/global.d.ts: Window.__TAURI_INTERNALS__ 类型声明
- e2e search-clean: 未使用参数 _args 前缀
- tsconfig.test.json: include e2e/
- CI: ESLint 扫描范围扩展到 e2e/
- backup_registry: 拒绝写入系统目录 (C:\Windows\, C:\Program Files\)
- package.json: 新增 lint:fix / format 脚本

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
         run: npx tsc -b --noEmit
 
       - name: ESLint
-        run: npx eslint src/ tests/
+        run: npx eslint src/ tests/ e2e/
 
       - name: Vitest 测试
         run: npm test