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/rider/lib/models/model/onboarding_model.dart

@@ -0,0 +1,30 @@
+import 'package:get/get.dart';
+
+List<OnBoardingModel> onBoardingList = [
+  OnBoardingModel(
+    title: 'Welcome to Intaleq!'.tr,
+    image: 'assets/images/on1.png',
+    body:
+        'Intaleq is the ride-hailing app that is safe, reliable, and accessible.'
+            .tr,
+  ),
+  OnBoardingModel(
+    title: 'Get to your destination quickly and easily.'.tr,
+    image: 'assets/images/on2.png',
+    body: 'With Intaleq, you can get a ride to your destination in minutes.'.tr,
+  ),
+  OnBoardingModel(
+    title: 'Enjoy a safe and comfortable ride.'.tr,
+    image: 'assets/images/on3.png',
+    body:
+        'Intaleq is committed to safety, and all of our captains are carefully screened and background checked.'
+            .tr,
+  ),
+];
+
+class OnBoardingModel {
+  final String? title;
+  final String? image;
+  final String? body;
+  OnBoardingModel({this.body, this.title, this.image});
+}