feat: initial KosmoConnect platform v0.1

Includes:
- Backend services: ingestion (:8001), weather API (:8002),
  gateway (:8003), billing (:8004) with BTCPay integration
- Shared asyncpg pool, TimescaleDB hypertable, Redis, Mosquitto MQTT
- React frontend: Dashboard (MapLibre) and Messaging (chat UI)
- Bridge daemon for Pi + Meshtastic (Serial/TCP T-Deck support)
- Production Docker Compose, Nginx reverse proxy, ops scripts
- DEPLOY.md with step-by-step deployment guide

backend/docker-compose.prod.yml

@@ -0,0 +1,129 @@
+services:
+  timescaledb:
+    image: timescale/timescaledb:latest-pg15
+    container_name: kosmo_timescaledb
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER:-kosmo}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB:-kosmoconnect}
+    ports:
+      - "127.0.0.1:5432:5432"
+    volumes:
+      - timescale_data:/var/lib/postgresql/data
+      - ./migrations:/docker-entrypoint-initdb.d
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-kosmo} -d ${POSTGRES_DB:-kosmoconnect}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    container_name: kosmo_redis
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:6379:6379"
+    volumes:
+      - redis_data:/data
+
+  mosquitto:
+    image: eclipse-mosquitto:2
+    container_name: kosmo_mosquitto
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:1883:1883"
+    volumes:
+      - ./mosquitto.conf:/mosquitto/config/mosquitto.conf
+      - mosquitto_data:/mosquitto/data
+
+  api:
+    build: .
+    container_name: kosmo_api
+    restart: unless-stopped
+    command: ["uvicorn", "api.src.main:app", "--host", "0.0.0.0", "--port", "8000"]
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      MQTT_HOST: ${MQTT_HOST:-mosquitto}
+      MQTT_PORT: ${MQTT_PORT:-1883}
+    ports:
+      - "127.0.0.1:8002:8000"
+    depends_on:
+      timescaledb:
+        condition: service_healthy
+      mosquitto:
+        condition: service_started
+
+  ingestion:
+    build: .
+    container_name: kosmo_ingestion
+    restart: unless-stopped
+    command: ["uvicorn", "ingestion.src.main:app", "--host", "0.0.0.0", "--port", "8000"]
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      MQTT_HOST: ${MQTT_HOST:-mosquitto}
+      MQTT_PORT: ${MQTT_PORT:-1883}
+      MQTT_TOPIC: ${MQTT_TOPIC:-kosmo/ingest/enviro}
+    ports:
+      - "127.0.0.1:8001:8000"
+    depends_on:
+      timescaledb:
+        condition: service_healthy
+      mosquitto:
+        condition: service_started
+
+  gateway:
+    build: .
+    container_name: kosmo_gateway
+    restart: unless-stopped
+    command: ["uvicorn", "gateway.src.main:app", "--host", "0.0.0.0", "--port", "8000"]
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      MQTT_HOST: ${MQTT_HOST:-mosquitto}
+      MQTT_PORT: ${MQTT_PORT:-1883}
+    ports:
+      - "127.0.0.1:8003:8000"
+    depends_on:
+      timescaledb:
+        condition: service_healthy
+      mosquitto:
+        condition: service_started
+
+  billing:
+    build: .
+    container_name: kosmo_billing
+    restart: unless-stopped
+    command: ["uvicorn", "billing.src.main:app", "--host", "0.0.0.0", "--port", "8000"]
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      BTCPAY_URL: ${BTCPAY_URL}
+      BTCPAY_API_KEY: ${BTCPAY_API_KEY}
+      BTCPAY_STORE_ID: ${BTCPAY_STORE_ID}
+      WEBHOOK_SECRET: ${WEBHOOK_SECRET}
+    ports:
+      - "127.0.0.1:8004:8000"
+    depends_on:
+      timescaledb:
+        condition: service_healthy
+
+  nginx:
+    image: nginx:alpine
+    container_name: kosmo_nginx
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ../web/dashboard/dist:/usr/share/nginx/html/dashboard:ro
+      - ../web/messaging/dist:/usr/share/nginx/html/messaging:ro
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
+      - ./certs:/etc/nginx/certs:ro
+    depends_on:
+      - api
+      - gateway
+      - billing
+
+volumes:
+  timescale_data:
+  redis_data:
+  mosquitto_data: