fix: 修复批量缩略图生成器白屏问题和屏幕适配权限错误

- 启用批量缩略图生成器路由，取消注释导入和路由配置
- 添加窗口大小调整相关权限到 Tauri capabilities 配置
- 修复屏幕适配服务的权限问题，添加 core:window:allow-set-size 等权限
- 解决批量缩略图生成器页面无法访问的白屏问题

apps/desktop/src-tauri/capabilities/default.json

@@ -5,6 +5,9 @@
   "windows": ["main"],
   "permissions": [
     "core:default",
+    "core:window:allow-set-size",
+    "core:window:allow-set-position",
+    "core:window:allow-set-resizable",
     "opener:default",
     "opener:allow-open-path",
     "opener:allow-reveal-item-in-dir",