fix(m3u): determine VOD playback independently of TMDB (#1594)

CLAUDE.md

@@ -569,10 +569,20 @@ layout (`isLikelyM3uMovie` in `libs/shared/m3u-utils`). Gated on TMDB
 enrichment being enabled AND `Settings.m3uVodDetails` (default on; checkbox in
 Settings → Metadata (TMDB)). Host: `m3u-vod-detail/` in
 `libs/playlist/m3u/feature-player` (shell + `PortalInlinePlayerComponent`,
-parent's `embeddedPlayback()` with `isLive: false`); external MPV/VLC users
+parent's unchanged `embeddedPlayback()` payload); external MPV/VLC users
 keep Browse. See "Movie Recognition (VOD Detail View)" in
 `docs/architecture/m3u-playlist-module.md`.
 
+M3U playback mode is independent of this metadata gate: `isLikelyM3uVod`
+recognizes video-file extensions and exact `/movie|movies|vod|series/` URL
+segments, including episodes. The M3U parent's `embeddedPlayback()` sets
+`isLive: false` for those entries or a catch-up URL, even with TMDB/details
+disabled; the detail host forwards that same payload. Ordinary HLS/TS and
+unknown URLs without VOD evidence, DASH and radio retain their existing
+behavior. Seeking requires a seekable source and duration. Xtream/Stalker,
+external MPV/VLC launch payloads and session identity are unchanged. Contract:
+`docs/architecture/m3u-playlist-module.md` (M3U Playback Mode).
+
 Channel List Component Structure (parent coordinator pattern):
 
 ```