Skip AcoustID verification for high-confidence cross-language matches

When the fingerprint score is >=0.95 but title/artist don't match
(e.g. English expected vs Japanese returned), SKIP instead of FAIL.
A 95%+ fingerprint means the audio IS the correct recording — the
metadata mismatch is just a language/script difference, not a wrong
file. Prevents Japanese, Chinese, Korean, and other non-Latin tracks
from being falsely quarantined.

Happy path unchanged — matching title/artist still returns PASS at
the earlier check before this code is reached.

core/acoustid_verification.py

@@ -330,8 +330,22 @@ class AcoustIDVerification:
                     logger.info(f"AcoustID verification PASSED (scan match) - {msg}")
                     return VerificationResult.PASS, msg
 
-            # No match found — this file is likely wrong
-            # Report what AcoustID thinks the file actually is (top result by score)
+            # No match found — but if fingerprint score is very high (≥0.95),
+            # the audio IS correct and the title mismatch is likely a language
+            # difference (e.g. Japanese kanji vs English title for the same song).
+            # Skip rather than quarantine a correct file.
+            if best_score >= 0.95:
+                top = recordings[0]
+                msg = (
+                    f"Title/artist mismatch but fingerprint confidence very high ({best_score:.2f}): "
+                    f"AcoustID='{top.get('title', '?')}' by '{top.get('artist', '?')}', "
+                    f"expected '{expected_track_name}' by '{expected_artist_name}' — "
+                    f"likely same song in different language/script"
+                )
+                logger.info(f"AcoustID verification SKIPPED (high confidence) - {msg}")
+                return VerificationResult.SKIP, msg
+
+            # Low fingerprint score + no metadata match — file is likely wrong
             top = recordings[0]
             top_title = top.get('title', '?')
             top_artist = top.get('artist', '?')

web_server.py

@@ -19009,6 +19009,15 @@ def get_version_info():
         "title": "What's New in SoulSync",
         "subtitle": f"Version {SOULSYNC_VERSION} — Latest Changes",
         "sections": [
+            {
+                "title": "🔧 Fix AcoustID False Positives for Non-English Tracks",
+                "description": "AcoustID no longer quarantines correct files when titles are in different languages",
+                "features": [
+                    "• High-confidence fingerprint matches (95%+) now SKIP instead of FAIL when title/artist don't match",
+                    "• Prevents Japanese, Chinese, Korean, and other non-Latin tracks from being falsely quarantined",
+                    "• Audio fingerprint confirms the recording is correct — metadata mismatch is just a language difference"
+                ]
+            },
             {
                 "title": "🔧 Fix Soulseek Junk Tags Surviving Post-Processing",
                 "description": "Tags from Soulseek source files are now wiped to disk immediately, before metadata enhancement",

webui/static/helper.js

@@ -3403,6 +3403,7 @@ function closeHelperSearch() {
 const WHATS_NEW = {
     '2.1': [
         // Newest features first
+        { title: 'Fix AcoustID False Positives',        desc: 'High-confidence fingerprints no longer quarantine correct files when titles are in different languages' },
         { title: 'Fix Junk Tags Surviving',            desc: 'Soulseek source tags are now wiped to disk immediately — no more album fragmentation from partial metadata' },
         { title: 'Watch All Preview Modal',           desc: 'Watch All Unwatched now opens a modal showing which artists will be added before confirming', page: 'library', selector: '#library-watchlist-all-btn' },
         { title: 'Fix Watch All Unwatched',           desc: 'Watch All Unwatched now works for Deezer users — was silently skipping artists with only Deezer IDs' },