feat: Gemini AI (doc OCR + face match) + role-assignment endpoints

- GeminiService (integrations/gemini, @Global): extractDocument (OCR fields) + faceMatch; graceful if no GEMINI_API_KEY
- documents: face-match now real via Gemini; POST /admin/documents/:id/ocr extracts fields for CS auto-fill
- roles: PATCH /admin/users/:id/role (admin) + POST /platform/users/role (bootstrap via x-platform-secret)
- config: gemini + platform.secret; .env.example entries

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/driver/lib/controller/functions/twilio_service.dart

@@ -0,0 +1,22 @@
+// import 'package:ride/constant/credential.dart';
+// import 'package:twilio_flutter/twilio_flutter.dart';
+//
+// class TwilioSMS {
+//   TwilioFlutter twilioFlutter = TwilioFlutter(
+//       accountSid: AppCredintials.accountSIDTwillo,
+//       authToken: AppCredintials.authTokenTwillo,
+//       twilioNumber: '+962 7 9858 3052');
+//
+//   Future<void> sendSMS({
+//     required String recipientPhoneNumber,
+//     required String message,
+//   }) async {
+//     try {
+//       await twilioFlutter.sendSMS(
+//         toNumber: recipientPhoneNumber,
+//         messageBody: message,
+//       );
+//     } catch (e) {
+//     }
+//   }
+// }