fix(kodi_rpc): fix Application.SetMute error handling and correct platform booleans and system labels

docker-compose.yml

@@ -12,7 +12,7 @@ services:
       - "8097:8097"      # Web Remote & REST API
     environment:
       - DISPLAY=${DISPLAY:-:0}
-      - MPV_VO=${MPV_VO:-gpu}          # Change to 'null' for headless test without window
+      - MPV_VO=${MPV_VO:-null}         # 'null' ensures stable background test; set to 'gpu' with xhost for video window
       - MPV_HWDEC=${MPV_HWDEC:-auto}    # 'auto', 'vaapi', 'nvdec', or 'no'
       - MPV_FULLSCREEN=${MPV_FULLSCREEN:-false}  # Windowed by default for desktop testing
     volumes:

src/player/mpv_controller.py

@@ -213,8 +213,8 @@ class MpvController:
 
     async def command(self, *args: Any) -> Any:
         """Send a command to MPV and wait for response."""
-        if not self._writer:
+        if not self._writer or (self.process and self.process.returncode is not None):
-            logger.warning("Cannot send command, MPV writer is disconnected")
+            logger.debug("Cannot send command, MPV is disconnected: %s", args)
             return None
 
         self._request_id += 1
@@ -224,15 +224,19 @@ class MpvController:
 
         msg = {"command": list(args), "request_id": req_id}
         payload = (json.dumps(msg) + "\n").encode("utf-8")
-        self._writer.write(payload)
-        await self._writer.drain()
-
         try:
+            self._writer.write(payload)
+            await self._writer.drain()
             return await asyncio.wait_for(fut, timeout=5.0)
         except asyncio.TimeoutError:
             self._pending_requests.pop(req_id, None)
             logger.warning("MPV command timed out: %s", args)
             return None
+        except Exception as e:
+            self._pending_requests.pop(req_id, None)
+            logger.warning("MPV command error (%s): %s", args, e)
+            return None
+
 
     async def play_url(
         self,

src/remotes/kodi_rpc.py

@@ -266,8 +266,10 @@ class KodiRpcServer:
         booleans = params.get("booleans", [])
         result = {}
         for b in booleans:
-            if b in ("Services.EventServer", "Services.Webserver"):
+            if b in ("System.Platform.Linux", "Services.EventServer", "Services.Webserver"):
                 result[b] = True
+            elif b.startswith("System.Platform."):
+                result[b] = False
             elif b == "System.HasModalDialog":
                 result[b] = False
             else:
@@ -276,7 +278,17 @@ class KodiRpcServer:
 
     async def _rpc_xbmc_get_info_labels(self, params: Dict[str, Any]) -> Dict[str, str]:
         labels = params.get("labels", [])
-        return {l: "" for l in labels}
+        result = {}
+        for l in labels:
+            if l == "System.BuildVersion":
+                result[l] = "19.4 (19.4.0) Git:20220302-e26f2334f3 Media Center Kodi"
+            elif l == "System.KernelVersion":
+                result[l] = "Linux 6.8.0"
+            elif l == "System.FriendlyName":
+                result[l] = "HTPC"
+            else:
+                result[l] = ""
+        return result
 
     async def _rpc_app_set_volume(self, params: Dict[str, Any]) -> int:
         vol = params.get("volume", 100)