b877a32ad8
Two new additive widget kinds: Jellyfin 'now_playing': like the existing 'activity' widget but filters to only sessions with active playback (NowPlayingItem present + not paused). Shows who's actually watching right now. The 'activity' kind is unchanged (shows all sessions including idle). Grafana 'panel': embeds a single Grafana panel directly in the app via an iframe, using Grafana's /d-solo/ endpoint (renders one panel without dashboard chrome, kiosk=tv). Configurable dashboard_uid, panel_id, and time range (from/to, defaults now-1h/now). Includes a fallback 'Open in Grafana' link for when embedding is blocked by X-Frame-Options/CSP. The 'link' kind is unchanged (still builds a deep-link URL). Backend: new widget configs + definitions on jellyfin/grafana; source adapter logic (session filter for now_playing; d-solo embed URL for panel); 6 new tests. Frontend: JellyfinNowPlayingWidget + GrafanaPanelWidget components; registry bindings; 6 new tests. 278 backend tests pass (+6); 127 frontend tests pass (+6); lint/build green both sides.