revert(hub): drop the poster-grid movie merge (V12)

V12 collapsed movies that TMDB resolved to the same tmdb_id into one
card. With the matcher still imperfect that fuses *different films*:
every numbered entry of a saga whose bare title resolves to the same
base id becomes one card, and two unrelated movies sharing a title do
too (seen live on a 9-film saga and a 2-film pair). A tmdb_id-keyed
merge only works once matching is reliable, which it is not yet.

Movies render one card per file again; VideoDetailModal loses the
`files` prop and the versions list, back to a single Play button;
`.video-version-list` and the `video.versions` key (×10 locales) are
removed. mergedShows (V6) is untouched — the operator's report was
about movies.

docs/mediacenter.md §10.1: V12 un-struck, marked reverted.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018BMLQjqFGCize2KtNBT79v

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/mediacenter.md b/docs/mediacenter.md
index 45f57d9..aa1bd03 100644
--- a/docs/mediacenter.md
+++ b/docs/mediacenter.md
@@ -767,7 +767,7 @@ TMDB id, and an unmatched poster gets a badge.
 | ~~V9~~ | `_best_match` trusted `results[0]` per query unconditionally | Optional `year`: when the top result is not a confident textual hit (< 0.6) and a year was requested, a different result of that exact release year is preferred. A confident top hit is never overridden |
 | ~~V10~~ | `sequel_variants` narrow (trailing digit 2–9, arabic→roman only) | Widened: digit↔Roman both ways, spelled-out indices (one/two…, un/deux…, ordinals), a "Part N" / "Chapitre N" wrapper. Still empty for a trailing word that is not an index or a 4-digit year |
 | ~~V11~~ | Extra TMDB calls in the 0.6–0.85 band | When the primary hit is decent (≥ 0.6) and there is nothing more specific to try (no `alternative_title`, no sequel variant), the ladder returns without the extra requests |
-| ~~V12~~ | Movies not merged in the poster grid | `mergedMovies` groups by resolved `tmdb_id`, mirroring `mergedShows`; the detail modal lists the versions (resolution · duration · size), each a Play button. New `video.versions` key ×10. Edge: "Fix match" on a merged movie corrects only the representative file; the other version un-merges and can be corrected on its own |
+| V12 | Movies not merged in the poster grid | Built (`mergedMovies` by resolved `tmdb_id`) then **reverted** (`revert/video-movie-merge`): with a poor matcher it *fuses distinct films* — every numbered entry of a saga that TMDB resolves to the same base id collapses into one card (seen live: a 9-film saga, two unrelated same-title movies). A merge that trusts `tmdb_id` needs the match to be right first; that is the V8–V11 / V9 work, still not fully there. Movies now render one card per file again; the detail modal has a single Play button; `video.versions` key removed. |
 | ~~V13~~ | Per-card "re-match this one file" button | `OP_TMDB_REMATCH` / `MNP.TMDB_REMATCH` (MNP 0.13, additive) → `media_cache.drop_tmdb_match` (forgets the match *and* the override marker). Signed like `tmdb_override`. Button next to "Fix match" in the detail modal; `transport.rematchTmdbMatch`; `video.rematch_one` key ×10 |
 
 ### 10.2 A movie mis-shelved as a series (2026-08-29)