fix: Japanese/CJK albums vanished from artist discography (web + android)

The album-name normaliser stripped everything but a-z0-9, so any JP/CJK
title collapsed to "". All of an artist's Japanese singles then normalised
identically, de-duplicated into one entry and "matched" each other — e.g.
inabakumori (稲葉曇) showed only 2 of 9 releases. Normalisers now keep
Unicode letters/numbers (\p{L}\p{N}) in:
- web _normAlbum (detail.js)
- android normAlbum (categorizeAlbums), normTrack (partial-album split),
  the enrichPartialCounts helpers, and the Deezer artist-name match.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -106,6 +106,14 @@ like Android), concert events become **reliable across web/Android**, several An
 - **Android artist albums incomplete** — `lookupArtistAlbums` filtered to `record_type == "album"`,
   dropping EPs and singles that Deezer (and the web app) show. Now returns all, sorted album → EP →
   single.
+- **Japanese/CJK albums vanished from the artist discography (Web + Android)** — the album-name
+  normaliser stripped everything except `a-z0-9`, so any Japanese/CJK title collapsed to an empty
+  string. All of an artist's JP singles then normalised identically (`""`), so they de-duplicated
+  into one entry and even "matched" each other — e.g. inabakumori (稲葉曇) showed only 2 of 9 releases,
+  the rest hidden behind one album. The normaliser now keeps Unicode letters/numbers (`\p{L}\p{N}`),
+  so JP titles stay distinct and the full discography (In Library / Unvollständig / Noch nicht
+  heruntergeladen) shows correctly. Same fix applied to the partial-album track match and the
+  Deezer-artist name match.
 - **Android "Unvollständig" (partial albums) never showed** — Deezer's `/artist/{id}/albums` omits
   `nb_tracks`, so an owned album's real total was unknown (0) and it never got flagged incomplete;
   every partly-downloaded album looked complete. The artist VM now resolves the real track count for

android/app/src/main/kotlin/com/novasonic/app/ui/screen/ItunesArtistScreen.kt

@@ -40,7 +40,9 @@ import com.novasonic.app.ui.theme.*
 import com.novasonic.app.viewmodel.ItunesArtistState
 
 private fun normAlbum(s: String?): String =
-    (s ?: "").lowercase().replace(Regex("[^a-z0-9\\s]"), " ").replace(Regex("\\s+"), " ").trim()
+    // Keep Unicode letters/numbers (\p{L}\p{N}) — stripping to a-z0-9 emptied every Japanese/CJK
+    // title, so all of an artist's JP singles collapsed into one and "matched" each other.
+    (s ?: "").lowercase().replace(Regex("[^\\p{L}\\p{N}\\s]"), " ").replace(Regex("\\s+"), " ").trim()
 
 data class ArtistAlbumCategories(
     val downloaded: List<Pair<Album, ItunesItem?>>,

android/app/src/main/kotlin/com/novasonic/app/ui/screen/PartialAlbumScreen.kt

@@ -27,7 +27,9 @@ import com.novasonic.app.ui.theme.*
 import com.novasonic.app.viewmodel.PartialAlbumState
 
 private fun normTrack(s: String?) =
-    (s ?: "").lowercase().replace(Regex("[^a-z0-9]"), "").trim()
+    // Keep Unicode letters/numbers so Japanese track titles aren't all emptied to "" (which made
+    // every downloaded JP track "match" every missing one in the partial-album split).
+    (s ?: "").lowercase().replace(Regex("[^\\p{L}\\p{N}]"), "").trim()
 
 @Composable
 fun PartialAlbumScreen(

android/app/src/main/kotlin/com/novasonic/app/viewmodel/ArtistViewModel.kt

@@ -158,7 +158,7 @@ class ArtistViewModel(app: Application, savedState: SavedStateHandle) : AndroidV
         // artists are fan-sorted (ItunesClient), so firstOrNull gives the most popular match.
         // Prefer an EXACT normalized-name match: "Flay!" must not resolve to the far more popular
         // "K.FLAY" (its name merely contains "flay"). Only fall back to a loose contains-match.
-        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^a-z0-9]"), "")
+        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^\\p{L}\\p{N}]"), "")
         val q = norm(artistName)
         val iArtist = (
             artists.firstOrNull { norm(it.artistName) == q }
@@ -198,7 +198,7 @@ class ArtistViewModel(app: Application, savedState: SavedStateHandle) : AndroidV
         val ndAlbums = _state.value.artist?.album ?: return
         val iAlbums  = _state.value.iAlbums
         if (ndAlbums.isEmpty() || iAlbums.isEmpty()) return
-        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^a-z0-9]"), "")
+        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^\\p{L}\\p{N}]"), "")
         val enriched = coroutineScope {
             iAlbums.map { ia ->
                 val cid     = ia.collectionId

android/app/src/main/kotlin/com/novasonic/app/viewmodel/ExploreViewModel.kt

@@ -220,7 +220,7 @@ class ExploreViewModel(app: Application) : AndroidViewModel(app) {
         ndAlbums: List<Album>, iAlbums: List<ItunesItem>,
     ): List<ItunesItem> {
         if (ndAlbums.isEmpty() || iAlbums.isEmpty()) return iAlbums
-        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^a-z0-9]"), "")
+        fun norm(s: String?) = (s ?: "").lowercase().replace(Regex("[^\\p{L}\\p{N}]"), "")
         var changed = false
         val out = coroutineScope {
             iAlbums.map { ia ->

src/views/detail.js

@@ -337,7 +337,10 @@ export async function loadArtistDetail(artist) {
 }
 
 function _normAlbum(s) {
-  return (s || '').toLowerCase().replace(/[^a-z0-9\s]/g, ' ').replace(/\s+/g, ' ').trim();
+  // Keep Unicode letters/numbers (not just a-z0-9) — otherwise every Japanese/CJK title strips to an
+  // empty string, so all of an artist's JP singles collapse into one entry and even "match" each
+  // other (that hid inabakumori's whole singles discography behind one album).
+  return (s || '').toLowerCase().replace(/[^\p{L}\p{N}\s]/gu, ' ').replace(/\s+/g, ' ').trim();
 }
 
 async function _renderArtistAlbums(el, ndAlbums, iAlbums, artist) {