feat(media): MprisController fängt Player- und Bus-Fehler sauber ab

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

whisper_local/media/_mpris.py

@@ -43,27 +43,36 @@ class MprisController:
         """Pausiert einen Player, wenn er im Status 'Playing' ist.
         Gibt den Bus-Namen zurück, wenn pausiert wurde, sonst None.
         """
-        player = await self._get_player_interface(bus_name)
-        status = await player.get_playback_status()
-        if status != "Playing":
+        try:
+            player = await self._get_player_interface(bus_name)
+            status = await player.get_playback_status()
+            if status != "Playing":
+                return None
+            await player.call_pause()
+            return bus_name
+        except Exception as e:
+            logger.warning("Konnte Player %s nicht pausieren: %s", bus_name, e)
             return None
-        await player.call_pause()
-        return bus_name
+
+    async def _resume_player(self, bus_name: str) -> None:
+        try:
+            player = await self._get_player_interface(bus_name)
+            await player.call_play()
+        except Exception as e:
+            logger.warning("Konnte Player %s nicht fortsetzen: %s", bus_name, e)
 
     async def pause(self) -> None:
-        names = await self._list_player_names()
+        try:
+            names = await self._list_player_names()
+        except Exception as e:
+            logger.warning("D-Bus nicht erreichbar, überspringe Media-Pause: %s", e)
+            self._paused = []
+            return
         results = await asyncio.gather(
             *(self._pause_player(n) for n in names),
             return_exceptions=True,
         )
-        self._paused = [
-            name for name in results
-            if isinstance(name, str)
-        ]
-
-    async def _resume_player(self, bus_name: str) -> None:
-        player = await self._get_player_interface(bus_name)
-        await player.call_play()
+        self._paused = [name for name in results if isinstance(name, str)]
 
     async def resume(self) -> None:
         if not self._paused: