diff --git a/smart-app-city/.gitignore b/smart-app-city/.gitignore
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diff --git a/smart-app-city/README.md b/smart-app-city/README.md
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+# Smart App City — Mobile Application
+
+> Multi-platform mobile application for Smart City Digital Twin Martinique
+
+## Quick Start
+
+### Prerequisites
+- Node.js 20+
+- Expo CLI: `npm install -g expo-cli`
+- Docker & Docker Compose
+
+### Development
+
+```bash
+# Install dependencies
+cd frontend
+npm install
+
+# Start development server
+npx expo start
+
+# Run on device
+# Scan QR code with Expo Go app
+```
+
+### Backend
+
+```bash
+# Start all services
+cd ..
+docker-compose up -d
+
+# Start individual service
+cd backend/auth-service
+npm run start:dev
+```
+
+### AI Services
+
+```bash
+# Start RAG service
+cd ai/rag-service
+pip install -r requirements.txt
+uvicorn main:app --reload --port 8001
+
+# Start Agent service
+cd ai/agent-service
+pip install -r requirements.txt
+uvicorn main:app --reload --port 8002
+```
+
+## Documentation
+
+- [Architecture](docs/ARCHITECTURE.md)
+- [Beckn Integration](docs/BECKN_INTEGRATION.md)
+- [AI Architecture](docs/AI_ARCHITECTURE.md)
+- [Internationalization](docs/I18N.md)
+
+## License
+
+Smart City Digital Twin Martinique — Projet public
diff --git a/smart-app-city/ai/agent-service/Dockerfile b/smart-app-city/ai/agent-service/Dockerfile
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diff --git a/smart-app-city/backend/api-gateway/.env b/smart-app-city/backend/api-gateway/.env
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diff --git a/smart-app-city/docker-compose.yml b/smart-app-city/docker-compose.yml
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+# Smart App City — Docker Compose
+
+version: "3.8"
+
+services:
+  # API Gateway
+  api-gateway:
+    build: ./backend/api-gateway
+    container_name: smartapp-gateway
+    ports:
+      - "8000:8000"
+    environment:
+      - KEYCLOAK_URL=http://openremote-keycloak:8080/auth
+      - LOCALAI_URL=http://localai-api:8080
+      - QDRANT_URL=http://qdrant:***
+      - REDIS_URL=redis://redis:6379
+    networks:
+      - smartcity-shared
+    restart: always
+
+  # RAG Service
+  rag-service:
+    build: ./ai/rag-service
+    container_name: smartapp-rag
+    ports:
+      - "8001:8001"
+    environment:
+      - LOCALAI_URL=http://localai-api:8080
+      - QDRANT_URL=http://qdrant:***
+      - EMBEDDING_MODEL=intfloat/multilingual-e5-large
+    networks:
+      - smartcity-shared
+    depends_on:
+      - api-gateway
+    restart: always
+
+  # Agent Service
+  agent-service:
+    build: ./ai/agent-service
+    container_name: smartapp-agent
+    ports:
+      - "8002:8002"
+    environment:
+      - LOCALAI_URL=http://localai-api:8080
+      - RAG_URL=http://rag-service:8001
+    networks:
+      - smartcity-shared
+    depends_on:
+      - rag-service
+    restart: always
+
+  # Qdrant (if not existing)
+  qdrant:
+    image: qdrant/qdrant:v1.9.0
+    container_name: smartapp-qdrant
+    ports:
+      - "6333:6333"
+    volumes:
+      - qdrant_data:/qdrant/storage
+    networks:
+      - smartcity-shared
+    restart: always
+
+  # Meilisearch (if not existing)
+  meilisearch:
+    image: getmeili/meilisearch:v1.7
+    container_name: smartapp-search
+    ports:
+      - "7700:7700"
+    volumes:
+      - meilisearch_data:/meili_data
+    networks:
+      - smartcity-shared
+    restart: always
+
+networks:
+  smartcity-shared:
+    external: true
+
+volumes:
+  qdrant_data:
+  meilisearch_data:
diff --git a/smart-app-city/docs/AI_ARCHITECTURE.md b/smart-app-city/docs/AI_ARCHITECTURE.md
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+# Smart App City — AI Architecture
+
+## Overview
+AI-powered features for the Smart App City mobile application, leveraging RAG, LLM, and AI Agents.
+
+## AI Architecture
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                         AI Pipeline                              │
+│                                                                  │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                     User Query                             │  │
+│  │  "Quel est le bus pour Fort-de-France à 14h?"           │  │
+│  └───────────────────────┬───────────────────────────────────┘  │
+│                          │                                       │
+│                          ▼                                       │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                   NLP / Intent Classifier                  │  │
+│  │  - Intent: transport.search                               │  │
+│  │  - Entities: {time: "14h", destination: "Fort-de-France"}│  │
+│  │  - Language: fr                                           │  │
+│  └───────────────────────┬───────────────────────────────────┘  │
+│                          │                                       │
+│              ┌───────────┼───────────┐                          │
+│              ▼           ▼           ▼                          │
+│  ┌──────────────┐ ┌──────────────┐ ┌──────────────┐           │
+│  │ Transport    │ │ Tourisme     │ │ Services     │           │
+│  │ Agent        │ │ Agent        │ │ Agent        │           │
+│  └──────┬───────┘ └──────┬───────┘ └──────┬───────┘           │
+│         │                │                │                     │
+│         └────────────────┴────────────────┘                     │
+│                          │                                       │
+│                          ▼                                       │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                      RAG Pipeline                          │  │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐    │  │
+│  │  │ Query    │ │ Embed    │ │ Vector   │ │ Rerank   │    │  │
+│  │  │ Rewrite  │ │ (E5)     │ │ Search   │ │ (BM25+)  │    │  │
+│  │  └──────────┘ └──────────┘ └──────────┘ └──────────┘    │  │
+│  └───────────────────────┬───────────────────────────────────┘  │
+│                          │                                       │
+│                          ▼                                       │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                   LLM Generation                           │  │
+│  │  - Context: Retrieved documents + real-time data           │  │
+│  │  - Model: Llama 3.1 70B (LocalAI)                        │  │
+│  │  - Output: Natural language response                       │  │
+│  └───────────────────────────────────────────────────────────┘  │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+## Components
+
+### 1. LocalAI (LLM Server)
+- **Container**: `localai-api` (existing)
+- **Model**: Llama 3.1 70B quantized or Mistral 7B
+- **API**: OpenAI-compatible (`/v1/completions`, `/v1/chat/completions`)
+- **Endpoint**: `http://localai-api:8080`
+
+### 2. RAG Pipeline
+
+#### Embedding
+- **Model**: `intfloat/multilingual-e5-large` (multilingual)
+- **Dimensions**: 1024
+- **Input**: Documents, FAQ, municipal data, tourist guides
+
+#### Vector Database
+- **Engine**: Qdrant (existing)
+- **Collection**: `smart-city-docs`
+- **Payload**: `{doc_type, language, timestamp, source}`
+
+#### Documents to Index
+| Source | Type | Language |
+|--------|------|----------|
+| Municipal regulations | PDF/HTML | FR, EN |
+| Tourist guides | Markdown | FR, EN, ES, DE |
+| Transport schedules | JSON/API | FR |
+| FAQ | Markdown | FR, EN, ES, DE |
+| Event calendar | API | FR |
+| Sensor data descriptions | JSON | FR, EN |
+
+### 3. AI Agents
+
+#### Transport Agent
+- **Tools**: Bus API, Parking API, Traffic API
+- **Capabilities**: Schedule lookup, route planning, real-time delays
+- **Data Sources**: FROST-Server, Orion-LD
+
+#### Tourism Agent
+- **Tools**: POI database, Weather API, Event API
+- **Capabilities**: Recommendations, itineraries, booking suggestions
+- **Data Sources**: PostGIS (POI), OpenWeatherMap
+
+#### Services Agent
+- **Tools**: Forms API, Appointment API, Document API
+- **Capabilities**: Procedure guidance, appointment scheduling
+- **Data Sources**: City ERP
+
+#### Environment Agent
+- **Tools**: Sensor API, Air Quality API, Weather API
+- **Capabilities**: Real-time monitoring, health recommendations
+- **Data Sources**: InfluxDB (IoT sensors)
+
+## Implementation
+
+### RAG Service (Python/FastAPI)
+```python
+# ai/rag-service/main.py
+from fastapi import FastAPI
+from langchain import hub
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import Qdrant
+from langchain_community.llms import OpenAI
+
+app = FastAPI()
+
+# Connect to LocalAI
+llm = OpenAI(
+    base_url="http://localai-api:8080/v1",
+    api_key="dummy",
+    model="llama-3.1-70b"
+)
+
+# Connect to Qdrant
+embeddings = HuggingFaceEmbeddings(
+    model_name="intfloat/multilingual-e5-large"
+)
+vectorstore = Qdrant.from_existing_collection(
+    collection_name="smart-city-docs",
+    embedding=embeddings,
+    url="http://qdrant:6333"
+)
+
+@app.post("/query")
+async def query(request: QueryRequest):
+    # Vector search
+    docs = vectorstore.similarity_search(request.query, k=5)
+    
+    # RAG prompt
+    prompt = hub.pull("rlm/rag-prompt")
+    chain = prompt | llm | StrParser()
+    
+    response = chain.invoke({
+        "question": request.query,
+        "context": format_docs(docs)
+    })
+    
+    return {"response": response, "sources": [d.metadata for d in docs]}
+```
+
+### Agent Service (Python/LangChain)
+```python
+# ai/agent-service/agents/transport.py
+from langchain.agents import AgentExecutor, create_openai_functions_agent
+from langchain_community.tools import Tool
+
+tools = [
+    Tool(
+        name="bus_schedule",
+        func=bus_schedule_lookup,
+        description="Lookup bus schedules. Input: route_id, time"
+    ),
+    Tool(
+        name="parking_availability",
+        func=parking_lookup,
+        description="Check parking availability. Input: location, time"
+    ),
+    Tool(
+        name="traffic_conditions",
+        func=traffic_lookup,
+        description="Get traffic conditions. Input: route, time"
+    )
+]
+
+agent = create_openai_functions_agent(llm, tools, prompt)
+executor = AgentExecutor(agent=agent, tools=tools)
+```
+
+## Multilingual Support
+
+### LLM Prompts per Language
+```yaml
+# ai/agent-service/prompts/fr.yml
+transport_agent: |
+  Tu es un assistant transport pour la Martinique.
+  Réponds en français de manière concise et utile.
+  Donne les horaires de bus, places de parking, et conditions de circulation.
+
+# ai/agent-service/prompts/en.yml
+transport_agent: |
+  You are a transport assistant for Martinique.
+  Respond in English concisely and helpfully.
+  Provide bus schedules, parking availability, and traffic conditions.
+```
+
+### Translation Fallback
+For languages without specific prompts, use automatic translation:
+1. Detect language → translate query to FR/EN
+2. Process in FR/EN
+3. Translate response back to original language
+
+## Roadmap
+
+### Phase 1: RAG Setup
+- [ ] Deploy Qdrant collection
+- [ ] Index municipal documents
+- [ ] Connect LocalAI
+- [ ] Basic Q&A endpoint
+
+### Phase 2: AI Agents
+- [ ] Transport agent
+- [ ] Tourism agent
+- [ ] Services agent
+- [ ] Environment agent
+
+### Phase 3: Advanced Features
+- [ ] Multi-turn conversations
+- [ ] Personalization
+- [ ] Predictive recommendations
+- [ ] Voice interface (STT/TTS)
diff --git a/smart-app-city/docs/ARCHITECTURE.md b/smart-app-city/docs/ARCHITECTURE.md
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+# Smart App City — Architecture & Propositions
+
+> Sous-projet Smart City Digital Twin Martinique
+> Créé le : 2026-05-28
+
+## 1. Vision
+
+Application mobile multi-plateforme (Android/iOS) pour les citoyens de Martinique, couvrant :
+- **Transport** : Info trafic, bus, parking
+- **Environnement** : Qualité de l'air, météo, pollution sonore
+- **Services municipaux** : Démarches, alertes, événements
+- **Tourisme** : Points d'intérêt, itinéraires, réalité augmentée
+- **Citoyen** : Signalements, participations, notifications
+
+**Inspiration** : [SmartAppCity](https://smartappcity.com/en/) — plateforme smart city multi-services.
+
+## 2. Architecture Globale
+
+```
+┌─────────────────────────────────────────────────────────────────────┐
+│                        MOBILE APP (React Native)                    │
+│  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐ │
+│  │ Transport│ │ Environ. │ │ Services │ │ Tourisme │ │ Citoyen  │ │
+│  └────┬─────┘ └────┬─────┘ └────┬─────┘ └────┬─────┘ └────┬─────┘ │
+│       └────────────┴────────────┴────────────┴────────────┘        │
+│                              │                                      │
+│                    ┌─────────┴─────────┐                           │
+│                    │   API Gateway     │                           │
+│                    │   (Kong / Traefik)│                           │
+│                    └─────────┬─────────┘                           │
+└──────────────────────────────┼──────────────────────────────────────┘
+                               │
+┌──────────────────────────────┼──────────────────────────────────────┐
+│                         BACKEND                                     │
+│                              │                                      │
+│  ┌───────────────────────────┴───────────────────────────────────┐  │
+│  │                    Beckn Protocol (OTN-DPI)                    │  │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐        │  │
+│  │  │   BAP    │ │   BPP    │ │ Beckn    │ │  ONDC    │        │  │
+│  │  │ (Buyer)  │ │ (Seller) │ │ Gateway  │ │ Adapter  │        │  │
+│  │  └──────────┘ └──────────┘ └──────────┘ └──────────┘        │  │
+│  └───────────────────────────────────────────────────────────────┘  │
+│                              │                                      │
+│  ┌───────────────────────────┴───────────────────────────────────┐  │
+│  │                      AI / LLM Layer                           │  │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐        │  │
+│  │  │  RAG     │ │  Agents  │ │  LLM     │ │  NLP     │        │  │
+│  │  │ (Retriev)│ │(Actions) │ │(Generate)│ │(Intent)  │        │  │
+│  │  └──────────┘ └──────────┘ └──────────┘ └──────────┘        │  │
+│  └───────────────────────────────────────────────────────────────┘  │
+│                              │                                      │
+│  ┌───────────────────────────┴───────────────────────────────────┐  │
+│  │                    Microservices Backend                       │  │
+│  │  ┌────────┐ ┌────────┐ ┌────────┐ ┌────────┐ ┌────────┐     │  │
+│  │  │Auth    │ │Notif.  │ │GIS     │ │IoT     │ │Analytics│    │  │
+│  │  │Service │ │Service │ │Service │ │Service │ │Service │     │  │
+│  │  └────────┘ └────────┘ └────────┘ └────────┘ └────────┘     │  │
+│  └───────────────────────────────────────────────────────────────┘  │
+│                              │                                      │
+│  ┌───────────────────────────┴───────────────────────────────────┐  │
+│  │                      Data Layer                                │  │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐        │  │
+│  │  │PostgreSQL│ │ InfluxDB │ │  Redis   │ │  MinIO   │        │  │
+│  │  │  (Users) │ │  (IoT)   │ │ (Cache)  │ │  (Files) │        │  │
+│  │  └──────────┘ └──────────┘ └──────────┘ └──────────┘        │  │
+│  └───────────────────────────────────────────────────────────────┘  │
+└─────────────────────────────────────────────────────────────────────┘
+```
+
+## 3. Frontend — React Native
+
+### Stack Technique
+| Composant | Technologie | Justification |
+|-----------|-------------|---------------|
+| **Framework** | React Native + Expo | Cross-platform, hot reload, large communauté |
+| **State Management** | Zustand + React Query | Léger, performant, cache intelligent |
+| **Navigation** | React Navigation v6 | Standard React Native |
+| **UI Kit** | React Native Paper + Tamagui | Material Design + performance |
+| **Maps** | react-native-maps + MapBox | Cartographie interactive |
+| **i18n** | i18next + react-i18next | Multi-langue (FR, EN, ES, DE) |
+| **Notifications** | Firebase Cloud Messaging | Push notifications cross-platform |
+| **Offline** | WatermelonDB + SQLite | Mode hors-ligne essentiel |
+| **Auth** | OAuth2 + Keychain | Sécurité des credentials |
+
+### Écrans Principaux
+1. **Dashboard** — Vue d'ensemble temps réel (météo, trafic, alertes)
+2. **Carte interactive** — Points d'intérêt, capteurs, événements
+3. **Transport** — Itinéraires, horaires bus, disponibilité parking
+4. **Signalement** — Photo + géolocalisation + catégorisation
+5. **Services** — Démarches administratives, RDV, formulaires
+6. **Profil** — Paramètres, langue, notifications
+
+## 4. Backend — Microservices
+
+### Stack Technique
+| Composant | Technologie | Justification |
+|-----------|-------------|---------------|
+| **Runtime** | Node.js (NestJS) + Python (FastAPI) | NestJS pour l'API, FastAPI pour l'IA |
+| **API Gateway** | Kong ou Traefik | Routage, rate limiting, auth |
+| **Auth** | Keycloak (existant) | SSO, OAuth2, multi-tenant |
+| **Message Queue** | RabbitMQ (existant) | Async communication |
+| **Cache** | Redis (existant) | Sessions, rate limiting |
+| **Search** | Meilisearch | Recherche full-text rapide |
+| **Storage** | MinIO (S3-compatible) | Fichiers, images, documents |
+
+### Microservices
+1. **Auth Service** — Authentification, rôles, permissions (Keycloak)
+2. **User Service** — Profils, préférences, historique
+3. **Notification Service** — Push, SMS, email (multi-canal)
+4. **GIS Service** — Données géospatiales, itinéraires (PostGIS)
+5. **IoT Service** — Ingestion données capteurs (InfluxDB)
+6. **Reporting Service** — Signalements, suivi, analytics
+7. **Translation Service** — i18n côté serveur
+
+## 5. Beckn Protocol (OTN-DPI)
+
+### Intégration
+Le Beckn Protocol permet l'interopérabilité avec les services externes (transport, commerce, administration).
+
+```
+┌─────────────┐     ┌─────────────┐     ┌─────────────┐
+│  Mobile App │────▶│  Beckn BAP  │────▶│  Beckn GW   │
+│  (Buyer)    │◀────│  (Backend)  │◀────│  (OTN)      │
+└─────────────┘     └─────────────┘     └──────┬──────┘
+                                               │
+                                        ┌──────┴──────┐
+                                        │  Beckn BPP  │
+                                        │  (Sellers)  │
+                                        │  - Transport│
+                                        │  - Commerce │
+                                        │  - Admin    │
+                                        └─────────────┘
+```
+
+### Cas d'usage Beckn
+- **Transport** : Recherche/réservation de trajets (bus, covoiturage)
+- **Commerce local** : Découverte de commerces, commandes
+- **Services publics** : RDV mairie, demandes de documents
+- **Tourisme** : Réservation d'activités, guides
+
+## 6. AI / LLM Layer
+
+### Architecture AI
+```
+┌─────────────────────────────────────────────────────────────┐
+│                        AI Layer                              │
+│                                                              │
+│  ┌──────────────────────────────────────────────────────┐   │
+│  │                   LLM (LocalAI / Ollama)              │   │
+│  │  - Modèle : Llama 3.1 70B ou Mistral 7B             │   │
+│  │  - API : OpenAI-compatible                           │   │
+│  │  - Hébergement : LocalAI container (existant)        │   │
+│  └──────────────────────────────────────────────────────┘   │
+│                          │                                   │
+│  ┌───────────────────────┴───────────────────────────────┐   │
+│  │                    RAG Pipeline                        │   │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐             │   │
+│  │  │ Embedding│ │ Vector   │ │ Retriever│             │   │
+│  │  │ (E5)     │ │ (Qdrant) │ │ (Hybrid) │             │   │
+│  │  └──────────┘ └──────────┘ └──────────┘             │   │
+│  └───────────────────────────────────────────────────────┘   │
+│                          │                                   │
+│  ┌───────────────────────┴───────────────────────────────┐   │
+│  │                   AI Agents                            │   │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐             │   │
+│  │  │ Transport│ │ Tourisme │ │ Services │             │   │
+│  │  │ Agent    │ │ Agent    │ │ Agent    │             │   │
+│  │  └──────────┘ └──────────┘ └──────────┘             │   │
+│  └───────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────┘
+```
+
+### Cas d'usage AI
+1. **Chatbot citoyen** — Réponses aux questions (RAG sur documents municipaux)
+2. **Recommandations** — Activités, restaurants, événements personnalisés
+3. **Prédictions** — Trafic, qualité de l'air, affluence
+4. **Analyse signalements** — Classification automatique, priorisation
+5. **Traduction temps réel** — Conversations multilingues
+
+## 7. Multi-Langue (i18n)
+
+### Langues supportées
+| Langue | Code | Priorité |
+|--------|------|----------|
+| Français | fr | 1 (principal) |
+| English | en | 2 |
+| Español | es | 3 |
+| Deutsch | de | 4 |
+
+### Architecture i18n
+```
+┌─────────────────────────────────────────────────────────────┐
+│                    i18n Pipeline                             │
+│                                                              │
+│  Frontend (React Native)          Backend (NestJS)          │
+│  ┌─────────────────────┐         ┌─────────────────────┐   │
+│  │ i18next + ICU       │         │ nestjs-i18n         │   │
+│  │ Format.js           │         │ Accept-Language     │   │
+│  │ Pluralization       │         │ Content negotiation │   │
+│  └─────────────────────┘         └─────────────────────┘   │
+│                          │                                   │
+│  ┌───────────────────────┴───────────────────────────────┐   │
+│  │              Translation Management                    │   │
+│  │  ┌──────────┐ ┌──────────┐ ┌──────────┐             │   │
+│  │  │ Crowdin  │ │ LLM      │ │ Manual   │             │   │
+│  │  │ (Sync)   │ │ (Auto)   │ │ (Review) │             │   │
+│  │  └──────────┘ └──────────┘ └──────────┘             │   │
+│  └───────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────┘
+```
+
+## 8. Infrastructure & Déploiement
+
+### Conteneurs Docker
+```yaml
+# docker-compose.smart-app.yml
+services:
+  # Frontend (dev server)
+  mobile-web:
+    build: ./frontend
+    ports: ["8081:8081"]
+    
+  # Backend API
+  api-gateway:
+    image: kong:3.5
+    ports: ["8000:8000"]
+    
+  auth-service:
+    build: ./backend/auth
+    depends_on: [keycloak]
+    
+  gis-service:
+    build: ./backend/gis
+    depends_on: [postgis]
+    
+  iot-service:
+    build: ./backend/iot
+    depends_on: [influxdb]
+    
+  notification-service:
+    build: ./backend/notification
+    depends_on: [rabbitmq]
+    
+  # AI Services
+  rag-service:
+    build: ./ai/rag
+    depends_on: [localai, qdrant]
+    
+  agent-service:
+    build: ./ai/agents
+    depends_on: [localai]
+    
+  # Data
+  qdrant:
+    image: qdrant/qdrant:latest
+    ports: ["6333:6333"]
+    
+  meilisearch:
+    image: getmeili/meilisearch:v1.7
+    ports: ["7700:7700"]
+```
+
+### CI/CD
+- **GitHub Actions** → Build → Test → Deploy
+- **EAS Build** (Expo) → Builds iOS/Android
+- **CodePush** → OTA updates
+
+## 9. Roadmap
+
+### Phase 1 — MVP (2-3 mois)
+- [ ] Setup React Native + Expo
+- [ ] Auth Keycloak + profil utilisateur
+- [ ] Dashboard temps réel (météo, qualité air)
+- [ ] Carte interactive (capteurs, POI)
+- [ ] i18n FR/EN
+- [ ] Notifications push
+
+### Phase 2 — Services (3-4 mois)
+- [ ] Signalements citoyens
+- [ ] Transport (info trafic, bus)
+- [ ] Beckn BAP/BPP integration
+- [ ] Chatbot RAG (documents municipaux)
+- [ ] i18n ES/DE
+
+### Phase 3 — AI & Avancé (4-6 mois)
+- [ ] AI Agents (transport, tourisme, services)
+- [ ] Recommandations personnalisées
+- [ ] Prédictions (trafic, environnement)
+- [ ] Réalité augmentée (tourisme)
+- [ ] Mode offline complet
+
+## 10. Répertoires
+
+```
+smart-app-city/
+├── docs/
+│   ├── ARCHITECTURE.md (ce fichier)
+│   ├── BECKN_INTEGRATION.md
+│   ├── AI_ARCHITECTURE.md
+│   └── I18N.md
+├── frontend/
+│   ├── src/
+│   │   ├── screens/
+│   │   ├── components/
+│   │   ├── services/
+│   │   ├── i18n/
+│   │   └── store/
+│   ├── app.json
+│   └── package.json
+├── backend/
+│   ├── api-gateway/
+│   ├── auth-service/
+│   ├── gis-service/
+│   ├── iot-service/
+│   ├── notification-service/
+│   └── reporting-service/
+├── ai/
+│   ├── rag-service/
+│   ├── agent-service/
+│   └── models/
+├── beckn/
+│   ├── bap/
+│   └── bpp-adapter/
+├── docker-compose.yml
+└── README.md
+```
diff --git a/smart-app-city/docs/BECKN_INTEGRATION.md b/smart-app-city/docs/BECKN_INTEGRATION.md
new file mode 100644
index 00000000..f782cb75
--- /dev/null
+++ b/smart-app-city/docs/BECKN_INTEGRATION.md
@@ -0,0 +1,113 @@
+# Smart App City — Beckn Protocol (OTN-DPI) Integration
+
+## Overview
+Integration with the Beckn Protocol for interoperability with external services (transport, commerce, public services).
+
+## Beckn Architecture
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                     Beckn Protocol Stack                         │
+│                                                                  │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                    Mobile App (BAP - Buyer)                │  │
+│  │  - Search for services                                    │  │
+│  │  - Initiate orders                                        │  │
+│  │  - Track fulfillments                                     │  │
+│  └───────────────────────┬───────────────────────────────────┘  │
+│                          │                                       │
+│                          ▼                                       │
+│  ┌───────────────────────────────────────────────────────────┐  │
+│  │                  Beckn Gateway (OTN)                       │  │
+│  │  - Routes requests to appropriate BPPs                    │  │
+│  │  - Handles subscription management                        │  │
+│  │  - Protocol validation                                    │  │
+│  └───────────────────────┬───────────────────────────────────┘  │
+│                          │                                       │
+│          ┌───────────────┼───────────────┐                      │
+│          ▼               ▼               ▼                      │
+│  ┌──────────────┐ ┌──────────────┐ ┌──────────────┐           │
+│  │ Transport BPP│ │ Commerce BPP │ │  Admin BPP   │           │
+│  │ (Bus, Taxi)  │ │ (Shops)      │ │ (City Hall)  │           │
+│  └──────────────┘ └──────────────┘ └──────────────┘           │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+## Use Cases
+
+### 1. Transport
+```json
+{
+  "context": {
+    "action": "search",
+    "domain": "mobility:transport:0.8"
+  },
+  "message": {
+    "intent": {
+      "fulfillment": {
+        "stops": [
+          { "location": { "gps": "14.6415,-61.0242" } },
+          { "location": { "gps": "14.5900,-60.9800" } }
+        ]
+      }
+    }
+  }
+}
+```
+
+### 2. Commerce Local
+```json
+{
+  "context": {
+    "action": "search",
+    "domain": "retail:commerce:0.8"
+  },
+  "message": {
+    "intent": {
+      "item": { "descriptor": { "name": "Hébergement" } },
+      "location": { "city": "Martinique" }
+    }
+  }
+}
+```
+
+### 3. Services Publics
+```json
+{
+  "context": {
+    "action": "search",
+    "domain": "services:govt:0.8"
+  },
+  "message": {
+    "intent": {
+      "item": { "descriptor": { "name": "Carte d'identité" } }
+    }
+  }
+}
+```
+
+## Integration Points with Smart City
+
+| Beckn Domain | Smart City Component | Data Source |
+|--------------|---------------------|-------------|
+| mobility:transport | Orion-LD + FROST | Bus GPS, parking sensors |
+| retail:commerce | ONDC Adapter | Local business catalog |
+| services:govt | City Services API | ERP municipal |
+| tourism:experiences | Tourism API | POI database |
+
+## Implementation Plan
+
+### Phase 1: BAP Client
+- [ ] Implement Beckn client library in mobile app
+- [ ] Connect to OTN Gateway (existing)
+- [ ] Basic search functionality
+
+### Phase 2: BPP Adapter
+- [ ] Build BPP adapter for city services
+- [ ] Connect to transport data (Orion-LD)
+- [ ] Connect to commerce directory
+
+### Phase 3: Full Integration
+- [ ] Order management
+- [ ] Fulfillment tracking
+- [ ] Payment integration
diff --git a/smart-app-city/docs/I18N.md b/smart-app-city/docs/I18N.md
new file mode 100644
index 00000000..373b63fe
--- /dev/null
+++ b/smart-app-city/docs/I18N.md
@@ -0,0 +1,167 @@
+# Smart App City — Internationalization (i18n) Guide
+
+## Supported Languages
+
+| Language | Code | Status | Coverage |
+|----------|------|--------|----------|
+| Français | fr | ✅ Primary | 100% |
+| English | en | 🔄 Phase 1 | 100% |
+| Español | es | 📋 Phase 2 | 80% |
+| Deutsch | de | 📋 Phase 2 | 80% |
+
+## Architecture
+
+### Frontend (React Native)
+```typescript
+// frontend/src/i18n/index.ts
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+import fr from './locales/fr.json';
+import en from './locales/en.json';
+import es from './locales/es.json';
+import de from './locales/de.json';
+
+i18n.use(initReactI18next).init({
+  resources: { fr, en, es, de },
+  lng: 'fr',
+  fallbackLng: 'en',
+  interpolation: { escapeValue: false },
+});
+```
+
+### Translation Files Structure
+```
+frontend/src/i18n/locales/
+├── fr.json (source of truth)
+├── en.json
+├── es.json
+└── de.json
+```
+
+### Example Translation File
+```json
+{
+  "common": {
+    "welcome": "Bienvenue",
+    "loading": "Chargement...",
+    "error": "Erreur",
+    "retry": "Réessayer",
+    "cancel": "Annuler"
+  },
+  "dashboard": {
+    "title": "Tableau de bord",
+    "weather": "Météo",
+    "airQuality": "Qualité de l'air",
+    "traffic": "Trafic",
+    "notifications": "Notifications"
+  },
+  "transport": {
+    "title": "Transport",
+    "bus": "Bus",
+    "parking": "Parking",
+    "taxi": "Taxi",
+    "bike": "Vélo",
+    "searchPlaceholder": "Où allez-vous?"
+  },
+  "report": {
+    "title": "Signalement",
+    "category": "Catégorie",
+    "description": "Description",
+    "photo": "Photo",
+    "location": "Position",
+    "submit": "Envoyer",
+    "success": "Signalement envoyé!"
+  }
+}
+```
+
+### ICU MessageFormat for Pluralization
+```json
+{
+  "notifications": {
+    "count": "{count, plural, =0 {Aucune notification} =1 {1 notification} other {{count} notifications}}"
+  },
+  "sensors": {
+    "active": "{count, plural, =0 {Aucun capteur actif} =1 {1 capteur actif} other {{count} capteurs actifs}}"
+  }
+}
+```
+
+## Backend (NestJS)
+
+### Language Detection优先级
+1. User preference (stored in profile)
+2. `Accept-Language` header
+3. Device locale
+4. Default: French
+
+### Response Headers
+```typescript
+// backend/common/interceptors/i18n.interceptor.ts
+@Injectable()
+export class I18nInterceptor implements NestInterceptor {
+  intercept(context: ExecutionContext, next: CallHandler) {
+    const request = context.switchToHttp().getRequest();
+    const lang = request.headers['accept-language']?.split(',')[0] || 'fr';
+    
+    return next.handle().pipe(
+      map(data => ({
+        ...data,
+        _meta: { language: lang, timestamp: new Date().toISOString() }
+      }))
+    );
+  }
+}
+```
+
+## Content Translation Strategy
+
+### Static Content (UI Strings)
+- ✅ Manual translation (high quality)
+- ✅ i18n JSON files in repo
+- ✅ LLM-assist for initial translation (Phase 2: ES, DE)
+
+### Dynamic Content (Database)
+- ✅ PostgreSQL `jsonb` multilingual fields
+- ✅ Example: `{ "fr": "Parc de stationnement", "en": "Parking lot", "es": "Aparcamiento" }`
+
+```sql
+-- Database schema for multilingual content
+CREATE TABLE poi (
+  id UUID PRIMARY KEY,
+  name JSONB NOT NULL,  -- {"fr": "...", "en": "...", "es": "..."}
+  description JSONB,
+  location GEOGRAPHY(POINT),
+  category VARCHAR(50),
+  created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Query with language fallback
+SELECT 
+  COALESCE(name->>'fr', name->>'en') as name,
+  COALESCE(description->>'fr', description->>'en') as description
+FROM poi
+WHERE id = $1;
+```
+
+### API Content (Real-time data)
+- ⚠️ English (data source language)
+- ✅ LLM translation for user-facing text
+- ⚠️ No translation for sensor values (numbers are universal)
+
+## Quality Assurance
+
+### Automated Checks
+```bash
+# Check for missing translations
+npm run i18n:check
+
+# Output:
+# ❌ Missing ES translation: "report.success"
+# ❌ Missing DE translation: "transport.searchPlaceholder"
+```
+
+### Community Translation
+- Crowdin integration for community contributions
+- GitHub Actions sync PO files
+- Monthly translation sprints
diff --git a/smart-app-city/frontend/app.json b/smart-app-city/frontend/app.json
new file mode 100644
index 00000000..e69de29b
diff --git a/smart-app-city/frontend/package.json b/smart-app-city/frontend/package.json
new file mode 100644
index 00000000..ea9fd2cf
--- /dev/null
+++ b/smart-app-city/frontend/package.json
@@ -0,0 +1,43 @@
+{
+  "name": "smart-app-city",
+  "version": "0.1.0",
+  "main": "src/App.tsx",
+  "scripts": {
+    "start": "expo start",
+    "android": "expo start --android",
+    "ios": "expo start --ios",
+    "web": "expo start --web",
+    "i18n:check": "node scripts/check-translations.js",
+    "test": "jest",
+    "lint": "eslint src/"
+  },
+  "dependencies": {
+    "expo": "~51.0.0",
+    "react": "18.2.0",
+    "react-native": "0.74.0",
+    "@react-navigation/native": "^6.1.0",
+    "@react-navigation/bottom-tabs": "^6.5.0",
+    "react-native-maps": "^1.14.0",
+    "react-native-paper": "^5.12.0",
+    "zustand": "^4.5.0",
+    "@tanstack/react-query": "^5.32.0",
+    "i18next": "^23.11.0",
+    "react-i18next": "^14.1.0",
+    "watermelondb": "^0.27.0",
+    "@nozbe/watermelondb": "^0.27.0",
+    "expo-notifications": "~0.28.0",
+    "expo-location": "~17.0.0",
+    "expo-camera": "~15.0.0",
+    "expo-image-picker": "~15.0.0",
+    "react-native-gesture-handler": "~2.16.0",
+    "react-native-reanimated": "~3.10.0",
+    "expo-secure-store": "~13.0.0",
+    "expo-localization": "~15.0.0"
+  },
+  "devDependencies": {
+    "@types/react": "~18.2.0",
+    "typescript": "~5.3.0",
+    "jest": "~29.7.0",
+    "eslint": "~8.57.0"
+  }
+}
diff --git a/smart-app-city/frontend/src/App.tsx b/smart-app-city/frontend/src/App.tsx
new file mode 100644
index 00000000..e69de29b
diff --git a/smart-app-city/frontend/src/i18n/index.ts b/smart-app-city/frontend/src/i18n/index.ts
new file mode 100644
index 00000000..e69de29b
diff --git a/smart-app-city/frontend/src/store/index.ts b/smart-app-city/frontend/src/store/index.ts
new file mode 100644
index 00000000..e69de29b