feat: add GPS tracking with Traccar integration

- Add GPS module with Traccar client service for device management
- Add driver enrollment flow with QR code generation
- Add real-time location tracking on driver profiles
- Add GPS settings configuration in admin tools
- Add Auth0 OpenID Connect setup script for Traccar
- Add deployment configs for production server
- Update nginx configs for SSL on GPS port 5055
- Add timezone setting support
- Various UI improvements and bug fixes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/nginx.conf

@@ -29,8 +29,9 @@ server {
     add_header Referrer-Policy "no-referrer-when-downgrade" always;
 
     # API proxy - forward all /api requests to backend service
-    location /api {
-        proxy_pass http://backend:3000;
+    # Strip /api prefix so /api/v1/health becomes /v1/health
+    location /api/ {
+        proxy_pass http://backend:3000/;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';