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>

package.json

@@ -7,6 +7,8 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
+    "format": "cargo fmt",
     "preview": "vite preview",
     "test": "vitest run",
     "test:watch": "vitest",