Fix source-info popover showing no data due to path format mismatch

track_downloads stores local Windows paths but tracks table stores
server-side paths (Plex/Jellyfin). Both the track_id lookup (NULL
due to failed auto-link at insert time) and exact file_path fallback
were failing.

Added filename-suffix LIKE matching as a final fallback in
get_track_source_info, plus a back-link so the track_id gets written
back for fast future lookups. Also improved the auto-link in
record_track_download to use the same suffix matching when exact path
fails.

database/music_database.py

@@ -9513,6 +9513,16 @@ class MusicDatabase:
             if not track_id and file_path:
                 cursor.execute("SELECT id FROM tracks WHERE file_path = ? LIMIT 1", (file_path,))
                 row = cursor.fetchone()
+                if not row:
+                    # Fallback: match by filename suffix (handles server path vs local path differences)
+                    import os as _os
+                    fname = _os.path.basename(file_path.replace('\\', '/'))
+                    if fname:
+                        cursor.execute(
+                            "SELECT id FROM tracks WHERE file_path LIKE ? OR file_path LIKE ? LIMIT 1",
+                            (f'%/{fname}', f'%\\{fname}')
+                        )
+                        row = cursor.fetchone()
                 if row:
                     track_id = str(row[0])
 
@@ -9577,6 +9587,33 @@ class MusicDatabase:
             logger.error(f"Error getting download by file path: {e}")
             return None
 
+    def get_download_by_filename(self, filename: str, link_track_id: str = None) -> Optional[dict]:
+        """Find a download record by filename suffix (handles server vs local path mismatches).
+        Optionally back-links the track_id on the found record for future fast lookups."""
+        try:
+            conn = self._get_connection()
+            cursor = conn.cursor()
+            # Match using both separator styles to handle Windows vs Unix paths
+            cursor.execute("""
+                SELECT * FROM track_downloads
+                WHERE file_path LIKE ? OR file_path LIKE ?
+                ORDER BY created_at DESC
+                LIMIT 1
+            """, (f'%/{filename}', f'%\\{filename}'))
+            row = cursor.fetchone()
+            if row and link_track_id:
+                # Back-link this record so future track_id lookups work directly
+                cursor.execute(
+                    "UPDATE track_downloads SET track_id = ? WHERE id = ? AND track_id IS NULL",
+                    (str(link_track_id), row['id'])
+                )
+                conn.commit()
+            conn.close()
+            return dict(row) if row else None
+        except Exception as e:
+            logger.error(f"Error getting download by filename: {e}")
+            return None
+
     # ==================== Discovery Pool Methods ====================
 
     def get_discovery_pool_matched(self, limit: int = 500) -> list:

web_server.py

@@ -14362,7 +14362,7 @@ def get_track_source_info(track_id):
         downloads = database.get_track_downloads(str(track_id))
 
         if not downloads:
-            # Try matching by file path as fallback
+            # Try matching by file path as fallback (exact, then filename suffix)
             conn = database._get_connection()
             cursor = conn.cursor()
             cursor.execute("SELECT file_path FROM tracks WHERE id = ?", (track_id,))
@@ -14372,6 +14372,15 @@ def get_track_source_info(track_id):
                 dl = database.get_download_by_file_path(row['file_path'])
                 if dl:
                     downloads = [dl]
+                else:
+                    # Path format mismatch (e.g. Plex path vs local Windows path) —
+                    # fall back to filename-only match and back-link the track_id
+                    import os as _os
+                    fname = _os.path.basename(row['file_path'].replace('\\', '/'))
+                    if fname:
+                        dl = database.get_download_by_filename(fname, link_track_id=track_id)
+                        if dl:
+                            downloads = [dl]
 
         return jsonify({"success": True, "downloads": downloads})
     except Exception as e: