Introduce a new middleware requireSetupIncompleteOrAdmin that allows unauthenticated access while the setup wizard is in progress but enforces admin authentication once setup is complete. Replace requireSetupIncomplete with the new guard in test-paths, test-abs and test-oidc API routes. Update the front-end hook to use fetchWithAuth for authenticated requests. Revise setup-guard tests to cover the new semantics: shared endpoints now return 401 when setup is complete and no auth is provided, return 403 for authenticated non-admin users, and allow admin access or unauthenticated access during setup/DB-unready conditions; also add jwt verification and user lookup mocks to the tests.
Extend multi-download-client support to include Transmission and NZBGet and introduce per-client custom download paths. Adds protocol mapping and new client types, Transmission/NZBGet integration services, API CRUD and validation changes, UI components/modal updates and live path previews, and manager routing by protocol. Includes DB migrations (download_path on download_history, interactive_search_access on users), schema updates, and related processor/service fixes and tests to ensure backward compatibility and proper path resolution.