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/home/menu_controller.dart

@@ -0,0 +1,14 @@
+import 'package:get/get.dart';
+
+class MyMenuController extends GetxController {
+  bool isDrawerOpen = true;
+
+  void getDrawerMenu() {
+    if (isDrawerOpen == true) {
+      isDrawerOpen = false;
+    } else {
+      isDrawerOpen = true;
+    }
+    update();
+  }
+}