tview's table navigation never terminates when no row is selectable. Turn
selection off while the Downloads panels and the release list are empty.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Release listing and grab in the shared arr client, a full-screen release
list (sort, hide rejected, rejection reasons, confirmation before grabbing
rejected releases; Usenet only), and a season/episode picker for Sonarr.
Overlays are now a stack so dialogs can open above the release list.
Add a fake Newznab indexer to the dev setup.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>