feat: initial BantayCam scaffold

- FastAPI backend with async SQLAlchemy
- Camera RTSP management (add, start, stop)
- Vehicle detection (YOLO + fast-alpr)
  - Type: car, motorcycle, truck, jeepney
  - Color detection (HSV)
  - License plate OCR
  - Motorcycle person count
- Face detection + InsightFace ArcFace embedding
- pgvector identity grouping (auto-cluster same face)
- Vehicle + person movement trail APIs
- Docker Compose with pgvector/pg16
- Models: Camera, VehicleIdentity, VehicleEvent, PersonIdentity, FaceEvent

docker-compose.yml

@@ -0,0 +1,37 @@
+version: "3.9"
+
+services:
+  postgres:
+    image: pgvector/pgvector:pg16
+    container_name: bantaycam-db
+    environment:
+      POSTGRES_USER: bantaycam
+      POSTGRES_PASSWORD: bantaycam
+      POSTGRES_DB: bantaycam
+    ports:
+      - "5432:5432"
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    restart: unless-stopped
+
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: bantaycam-api
+    depends_on:
+      - postgres
+    environment:
+      DATABASE_URL: postgresql+asyncpg://bantaycam:bantaycam@postgres:5432/bantaycam
+      STORAGE_PATH: /app/snapshots
+      GPU_DEVICE: -1          # Change to 0 for GPU
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./snapshots:/app/snapshots
+      - ./backend:/app
+    restart: unless-stopped
+    command: uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload
+
+volumes:
+  pgdata: