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.
Allow qBittorrent to be configured without credentials (supports IP whitelist) and require an API key for SABnzbd. Skip connection testing when disabling a client. Updates include: validation changes in admin and setup API routes, test-download-client flows, DownloadClientModal UI validation and save/test logic, and DownloadClientManager to pass empty strings for optional credentials. Tests updated to reflect SABnzbd API key requirement.
Implements support for configuring both qBittorrent and SABnzbd simultaneously, including migration from legacy config, protocol-aware routing, and protocol filtering. Adds new CRUD API routes for download clients, new UI management components, and updates setup and settings flows to use the new multi-client architecture. Updates documentation to describe the new structure and usage.
kikootwo