feat(worker): add configurable debug logging

README.md

@@ -47,6 +47,19 @@ Create an admin user:
 docker compose exec backend python manage.py createsuperuser
 ```
 
+Worker logs default to `INFO`. To see every poll, claim, lease renewal, progress update, retry, and completion, set:
+
+```env
+JOB_WORKER_LOG_LEVEL=DEBUG
+```
+
+Then recreate the worker:
+
+```powershell
+docker compose up -d --build worker
+docker compose logs -f worker
+```
+
 ## Architecture
 
 ```text