fix: check is_available() before creating Syphon output sink (#692)

src/scope/core/inputs/syphon.py

@@ -96,7 +96,7 @@ def connect(self, identifier: str) -> bool:
                 self._receiver = None
                 return False
         except ImportError:
-            logger.error("syphon-python not available")
+            logger.warning("syphon-python not available (macOS only)")
             return False
         except Exception as e:
             logger.error(f"Error connecting SyphonInputSource: {e}")

src/scope/core/outputs/syphon.py

@@ -70,7 +70,7 @@ def create(self, name: str, width: int, height: int) -> bool:
             self._sender = None
             return False
         except ImportError:
-            logger.error("syphon-python not available")
+            logger.warning("syphon-python not available (macOS only)")
             return False
         except Exception as e:
             logger.error(f"Error creating SyphonOutputSink: {e}")

src/scope/server/frame_processor.py

@@ -679,6 +679,11 @@ def _update_output_sink(
             if sink_class is None:
                 logger.error(f"Unknown output sink type: {sink_type}")
                 return
+            if not sink_class.is_available():
+                logger.warning(
+                    f"Output sink '{sink_type}' is not available on this platform"
+                )
+                return
             try:
                 sink = sink_class()
                 if sink.create(sink_name, width, height):

src/scope/server/syphon/sender.py

@@ -43,7 +43,7 @@ def create(self) -> bool:
             )
             return True
         except ImportError:
-            logger.error("syphon-python not available")
+            logger.warning("syphon-python not available (macOS only)")
             return False
         except Exception as e:
             logger.error(f"Failed to create SyphonSender: {e}", exc_info=True)