v0.1.6

Fixed\n- Keeps the Worker connected to both the API queue and local Cobalt networks after deployment.\n- Makes Instagram authentication errors specific to Instagram instead of mislabeling unrelated platform failures.\n- Updates gallery-dl to 1.32.13 and removes the non-media Instagram proxy default.\n\n### Validation\n[x] Worker tests, build, boundary checks, and formatting passed.\n[x] Production API-to-Worker download, Cobalt connectivity, and service health verified.