Implement complete frontend with admin panel and theme system

- Add admin authentication and dashboard
- Create event management pages (list, create, edit, archive)
- Implement gallery enhancements (search, sorting, bulk download)
- Add email configuration and archive management pages
- Integrate Umami analytics with tracking throughout the app
- Add comprehensive error boundaries and loading states
- Implement accessibility features (WCAG 2.1 AA compliance)
- Create theme system with preset themes and customization
- Add branding settings and company information management
- Fix backend database initialization and health check
- Configure proper API URLs and environment variables

🤖 Generated with [Claude Code](https://claude.ai/code)

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

frontend/src/contexts/AdminAuthContext.tsx

@@ -7,7 +7,7 @@ import type { AdminUser } from '../types';
 interface AdminAuthContextType {
   isAuthenticated: boolean;
   user: AdminUser | null;
-  login: (username: string, password: string) => Promise<void>;
+  login: (token: string, user: AdminUser) => void;
   logout: () => void;
   isLoading: boolean;
   error: string | null;
@@ -43,19 +43,10 @@ export const AdminAuthProvider: React.FC<AdminAuthProviderProps> = ({ children }
     setIsLoading(false);
   }, []);
 
-  const login = async (username: string, password: string) => {
-    try {
-      setError(null);
-      setIsLoading(true);
-      const response = await authService.adminLogin(username, password);
-      setUser(response.user);
-      setIsAuthenticated(true);
-    } catch (err: any) {
-      setError(err.response?.data?.error || 'Invalid credentials');
-      throw err;
-    } finally {
-      setIsLoading(false);
-    }
+  const login = (_token: string, user: AdminUser) => {
+    setUser(user);
+    setIsAuthenticated(true);
+    setError(null);
   };
 
   const logout = () => {