feat: enhance admin UI with responsive styles and new components

- Updated styles in src/styles.css for better responsiveness and layout adjustments.
- Added new CSS classes for edit drawer and item rail components.
- Introduced animations for drawer transitions.
- Created new types in src/types/admin.ts for better type safety in admin features.
- Modified vite.config.ts to change server port and enable strict port settings for development.

AGENTS.md

@@ -66,7 +66,7 @@ yarn dev
 默认访问地址：
 
 ```text
-http://localhost:5601
+http://localhost:5602
 ```
 
 本地联调要求：
@@ -88,7 +88,7 @@ yarn build
 yarn preview
 ```
 
-默认预览端口为 `5602`。
+默认预览端口为 `5603`。
 
 ## 测试流程