Show bitrate in browser, remove type labels and Play All text

- Extract bitrate alongside duration in browse_directory via get_media_info
- Display bitrate in large card view metadata (duration · bitrate · size)
- Replace Audio/Video type badge with bitrate column in list view
- Remove Play All button text, keep icon only
- Add formatBitrate helper function

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

media_server/services/browser_service.py

@@ -121,24 +121,28 @@ class BrowserService:
             return "other"
 
     @staticmethod
-    def get_duration(file_path: Path) -> Optional[float]:
-        """Get duration of a media file in seconds (header-only read).
+    def get_media_info(file_path: Path) -> dict:
+        """Get duration and bitrate of a media file (header-only read).
 
         Args:
             file_path: Path to the media file.
 
         Returns:
-            Duration in seconds, or None if unavailable.
+            Dict with 'duration' (float or None) and 'bitrate' (int or None).
         """
+        result = {"duration": None, "bitrate": None}
         if not HAS_MUTAGEN:
-            return None
+            return result
         try:
             audio = MutagenFile(str(file_path))
-            if audio is not None and hasattr(audio, "info") and hasattr(audio.info, "length"):
-                return round(audio.info.length, 2)
+            if audio is not None and hasattr(audio, "info"):
+                if hasattr(audio.info, "length"):
+                    result["duration"] = round(audio.info.length, 2)
+                if hasattr(audio.info, "bitrate") and audio.info.bitrate:
+                    result["bitrate"] = audio.info.bitrate
         except Exception:
             pass
-        return None
+        return result
 
     @staticmethod
     def browse_directory(
@@ -255,9 +259,12 @@ class BrowserService:
                     item["modified"] = None
 
                 if item["is_media"]:
-                    item["duration"] = BrowserService.get_duration(item_path)
+                    info = BrowserService.get_media_info(item_path)
+                    item["duration"] = info["duration"]
+                    item["bitrate"] = info["bitrate"]
                 else:
                     item["duration"] = None
+                    item["bitrate"] = None
 
             return {
                 "folder_id": folder_id,