ydm-pod — driver proof-of-delivery photo API
All endpoints require a Bearer token (Authorization header, X-Api-Token header, or ?token=).

Endpoints:
  GET /health
  GET /smb-health
  GET /pod/:pkg                 — list POD images for a package number (JSON)
  GET /pod/:pkg?type=signature  — filter: signature | delivery
  GET /pod/:pkg/first           — redirect to the first matching image
  GET /pod/:pkg/:filename       — stream one image (JPEG bytes)