Wire the RSS and Search tabs to the new backend:
- RSS: add/remove feeds, per-article "Add" (download), and a full
auto-download rule editor (match/regex, must[-not]-contain, per-feed
scope, category, save path, paused) with edit/delete.
- Search: results now add via the server-side download endpoint
(magnet/.torrent); add a Torznab indexer manager (list/add/remove).
- api.js: feed/rule/indexer/download client methods.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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