feat(admin, admin-ui): 实现RuoYi风格后台菜单管理，优化媒体资源处理

新增服务端菜单校验与归一化逻辑，完善菜单相关Schema；前端实现条件渲染的菜单编辑器，支持搜索式图标选择器与父级树过滤。新增媒体URL统一处理工具修复管理端本地静态资源路径映射问题，更新全部相关文档、技术决策记录与测试用例。本次变更不影响WonderQ-MiniAPP端。

WonderQ-Admin/tests/test_system.py

@@ -1,8 +1,12 @@
 import json
 from datetime import datetime
 
+import pytest
+from pydantic import ValidationError
+
 from app.models import AdminDepartment, AdminMenu, AdminRole
 from app.routers.system import _dept_dict, _menu_dict, _role_dict
+from app.schemas import AdminMenuCreate
 
 
 def test_role_audit_snapshot_serializes_datetime_fields():
@@ -42,3 +46,21 @@ def test_menu_and_department_audit_snapshots_serialize_datetime_fields():
 
     json.dumps(_menu_dict(menu))
     json.dumps(_dept_dict(dept))
+
+
+def test_menu_create_validates_fields_by_menu_type():
+    with pytest.raises(ValidationError):
+        AdminMenuCreate(name="   ", type="page", path="/users", componentKey="SystemUsers")
+
+    with pytest.raises(ValidationError):
+        AdminMenuCreate(name="按钮", type="button")
+
+    with pytest.raises(ValidationError):
+        AdminMenuCreate(name="页面", type="page", path="/users")
+
+    button = AdminMenuCreate(name="编辑用户", type="button", permissionCode="system:user:update")
+    assert button.path is None
+    assert button.componentKey is None
+
+    page = AdminMenuCreate(name="用户管理", type="page", path="/users", componentKey="SystemUsers")
+    assert page.path == "/users"