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>

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) {