P1 complete: real انطلق maps + Nabeh WhatsApp OTP + chat + ratings + cancel(both) + fraud detection

- maps: real map-saas route/geocode/reverse/places (x-api-key per country) + straight-line fallback
- auth: Redis-backed OTP + Nabeh WhatsApp send (dev mode keeps fixed 1234 bypass)
- chat: per-trip messages (participant-guarded) + socket broadcast
- ratings: post-trip rating + driver avg recompute + no double-rate
- cancel: from rider or driver + stage-based cancel fee + notify both
- fraud: cancel-abuse (soft/hard block via Redis), arrived-far-from-pickup, completed-too-fast → fraud_flags
- migration InitP1b (chat_messages, ratings, fraud_flags, trips.cancelled_by/cancel_fee)

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

backend/src/app.module.ts

@@ -16,6 +16,10 @@ import { TariffModule } from './modules/tariff/tariff.module';
 import { MapsModule } from './modules/maps/maps.module';
 import { TripsModule } from './modules/trips/trips.module';
 import { RealtimeModule } from './realtime/realtime.module';
+import { FraudModule } from './modules/fraud/fraud.module';
+import { ChatModule } from './modules/chat/chat.module';
+import { RatingsModule } from './modules/ratings/ratings.module';
+import { NabehModule } from './integrations/nabeh/nabeh.module';
 
 @Module({
   imports: [
@@ -39,7 +43,8 @@ import { RealtimeModule } from './realtime/realtime.module';
 
     ThrottlerModule.forRoot([{ ttl: 60000, limit: 120 }]),
 
-    RedisModule, // عالمي — يوفّر عميل Redis للمطابقة و OTP لاحقاً
+    RedisModule, // عالمي — عميل Redis للمطابقة و OTP
+    NabehModule, // عالمي — إرسال OTP واتساب
 
     HealthModule,
     TenantsModule,
@@ -50,7 +55,10 @@ import { RealtimeModule } from './realtime/realtime.module';
     TariffModule,
     DriversModule,
     RealtimeModule,
+    FraudModule,
     TripsModule,
+    ChatModule,
+    RatingsModule,
     SeedModule,
   ],
 })