Fix double /api/ prefix in API endpoint calls

When VITE_API_URL=/api, axios baseURL is already set to /api. However, all endpoint calls included the /api/ prefix, creating double paths like /api/api/auth/login/.

Removed /api/ prefix from 81 API endpoint calls across 22 files:
- src/api/auth.ts - Fixed login, logout, me, refresh, hijack endpoints
- src/api/client.ts - Fixed token refresh endpoint
- src/api/profile.ts - Fixed all profile, email, password, MFA, sessions endpoints
- src/hooks/*.ts - Fixed all remaining API calls (users, appointments, resources, etc)
- src/pages/*.tsx - Fixed signup and email verification endpoints

This ensures API requests use the correct path: /api/auth/login/ instead of /api/api/auth/login/

🤖 Generated with Claude Code

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

frontend/src/components/DevQuickLogin.tsx

@@ -88,7 +88,7 @@ export function DevQuickLogin({ embedded = false }: DevQuickLoginProps) {
     setLoading(user.username);
     try {
       // Call token auth API
-      const response = await apiClient.post('/api/auth-token/', {
+      const response = await apiClient.post('/auth-token/', {
         username: user.username,
         password: user.password,
       });
@@ -97,7 +97,7 @@ export function DevQuickLogin({ embedded = false }: DevQuickLoginProps) {
       setCookie('access_token', response.data.token, 7);
 
       // Fetch user data to determine redirect
-      const userResponse = await apiClient.get('/api/auth/me/');
+      const userResponse = await apiClient.get('/auth/me/');
       const userData = userResponse.data;
 
       // Determine the correct subdomain based on user role