Jellyfin 12.1 compatibility release. Cast Curator Sync now uses the updated people-query API, fixing the immediate MissingMethodException reported in #14.
The plugins and release builds now target Jellyfin 12.1 and .NET 10. Jellyfin 12 development continues on main with the 1.4.x.x release line. Jellyfin 10.11 support is preserved on jellyfin-10.11 (1.3.x.x), and Jellyfin 10.9 remains on jellyfin-10.9 (1.1.x.x). The existing plugin catalog URL is unchanged, and older releases remain available.
Validated: Windows and Linux builds, all seven plugins loading, configuration pages, and Cast Curator sync with synthetic local media. Broader checks of collection-read consistency and Watch History Janitor cleanup were inconclusive; this release does not claim to fix those behaviors. The frontend rewrites will follow separately.