Phase 9: scaffold remote server (Flask + Postgres, docker-compose for unraid)

- server/sql/init.sql: devices/tracking_points/dashcam_files schema
- server/modules/db.py: psycopg3 pool + query helpers
- server/modules/auth.py: X-Device-Name/X-Api-Key header auth
- server/app.py: /health, /api/v1/tracking/batch, /api/v1/dashcam/upload
- server/Dockerfile + docker-compose.yml: api (gunicorn) + postgres services
- server/scripts/create_device.py: one-time device/API-key registration
- server/README.md: unraid deployment + Cloudflare Tunnel exposure docs
- PLAN.md: Phase 9 marked in progress with full build notes

Co-authored-by: Copilot <[email protected]>

server/Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py .
+COPY modules/ ./modules/
+COPY scripts/ ./scripts/
+
+EXPOSE 8098
+
+# gunicorn instead of the Flask dev server for production use; single worker
+# is enough for this low-traffic single-device use case, threaded to allow
+# concurrent tracking + dashcam-upload requests.
+CMD ["gunicorn", "--bind", "0.0.0.0:8098", "--workers", "1", "--threads", "4", \
+     "--timeout", "300", "app:app"]