Merge Crowdin changes per key so translations from PR #531 are retained without dropping localization keys added on main. Normalize locale filenames for Flutter, keep incomplete languages behind the 70% production threshold, and retain them in Crowdin for continued translation.
Merge origin/l10n_main (PR #428) with a per-key three-way resolution:
Crowdin values win only where main did not change the key since the
last sync, so the unused-key removal, store->repo wording sweep, and
ICU plural fixes survive. Korean is restored at 98% completion and
mapped again in crowdin.yml and both language pickers; ar/hi/nl/zh-CN/
zh-TW stay dropped (37% and below).
The playlist import picker now also accepts .m3u/.m3u8; EXTINF entries
feed the same Deezer enrichment pipeline as CSV. Collection screens
(wishlist, loved, playlists) gain an export action that resolves each
track to its local file, writes SAF entries relative to the download
tree root so external players and DAP copies resolve them, skips
tracks without a file, and shares the .m3u8 via the system sheet.
The es/pt/zh base locales still shipped the old Store labels, the
backup-restore hint said 'from the store' in every locale (boutique
in fr, store loanword in ko), and the Go store lookup error said
'not found in store'. All user-visible surfaces now say repo;
translator descriptions in the template updated to match.
1,303 stale entries dropped across 19 locales (largest groups:
Spotify credentials flow, collection playlists, notification
channels, backup strings); generated localizations rebuilt.
Crowdin sources need a resync after this lands.
Three-way per-key merge: Crowdin wins for keys it updated, locally
added keys that Crowdin has not exported yet are kept. Also normalizes
@@locale to underscore form (es_ES, pt_PT, zh_CN, zh_TW) and repairs
two translations whose placeholders diverged from the template
(ar extensionsInstallPartialSuccess, es_ES cueSplitSplitting).
zarzet