fix(frontend): Fix client API calls and improve profile UI

- Fixed proxy configuration in vite.config.js (servicemanager-backend -> backend)
- Added X-Tenant-ID header to client-profile API calls
- Improved error handling with proper authentication checks
- Updated profile page UI to white theme (removed icons and colors)
- Changed all btn-primary buttons to white theme styling
- Enhanced API call error handling in tickets store

frontend-client/vite.config.js

@@ -8,7 +8,7 @@ export default defineConfig({
 		host: '0.0.0.0',
 		proxy: {
 			'/api': {
-				target: 'http://servicemanager-backend:8000',
+				target: 'http://backend:8000',
 				changeOrigin: true,
 				rewrite: (path) => path.replace(/^\/api/, '')
 			}