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/views/home/Captin/passportimage.dart

@@ -0,0 +1,46 @@
+// import 'dart:io';
+//
+// import 'package:flutter/material.dart';
+// import 'package:get/get.dart';
+// import '../../../controller/functions/ocr_controller.dart';
+//
+// class PassportDataExtractorWidget extends StatelessWidget {
+//   final PassportDataExtractor passportDataExtractor =
+//       Get.put(PassportDataExtractor());
+//   final PassportDataController controller = Get.put(PassportDataController());
+//
+//   @override
+//   Widget build(BuildContext context) {
+//     return Scaffold(
+//       appBar: AppBar(
+//         title: const Text('Passport Data Extractor'),
+//       ),
+//       body: Column(
+//         children: [
+//           ElevatedButton(
+//             onPressed: controller.extractDataAndDrawBoundingBoxes,
+//             child: const Text('Extract Data'),
+//           ),
+//           Expanded(
+//             child: Center(
+//               child: Stack(
+//                 children: [
+//                   GetBuilder<PassportDataController>(
+//                     builder: (controller) => CustomPaint(
+//                       painter: BoundingBoxPainter(
+//                           controller.extractedTextWithCoordinates),
+//                       child: GetBuilder<PassportDataExtractor>(
+//                         builder: (controller) =>
+//                             Image.file(File(passportDataExtractor.image!.path)),
+//                       ),
+//                     ),
+//                   ),
+//                 ],
+//               ),
+//             ),
+//           ),
+//         ],
+//       ),
+//     );
+//   }
+// }