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

backend/requirements.txt

@@ -0,0 +1,27 @@
+# Web framework
+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+pydantic==2.9.2
+pydantic-settings==2.5.2
+
+# Database
+sqlalchemy[asyncio]==2.0.35
+asyncpg==0.29.0
+pgvector==0.3.2
+alembic==1.13.3
+
+# AI / Computer Vision
+ultralytics==8.3.0          # YOLOv8/v11 vehicle + person detection
+fast-alpr==0.2.0            # License plate recognition
+insightface==0.7.3          # Face detection + recognition (ArcFace)
+opencv-python-headless==4.10.0.84
+numpy==1.26.4
+onnxruntime-gpu==1.19.2     # GPU inference (use onnxruntime for CPU-only)
+
+# Optional: GPU acceleration
+# torch>=2.0 (install separately with CUDA support)
+
+# Utilities
+python-multipart==0.0.9     # File uploads
+aiofiles==24.1.0
+httpx==0.27.2