feat(websocket): add WebSocket display backend for browser client

engine/controller.py

@@ -8,6 +8,17 @@ from engine.events import EventType, StreamEvent
 from engine.mic import MicMonitor
 from engine.ntfy import NtfyPoller
 from engine.scroll import stream
+from engine.websocket_display import WebSocketDisplay
+
+
+def _get_display(config: Config):
+    """Get the appropriate display based on config."""
+    if config.websocket:
+        ws = WebSocketDisplay(host="0.0.0.0", port=config.websocket_port)
+        ws.start_server()
+        ws.start_http_server()
+        return ws
+    return None
 
 
 class StreamController:
@@ -51,7 +62,10 @@ class StreamController:
                 ),
             )
 
-        stream(items, self.ntfy, self.mic)
+        display = _get_display(self.config)
+        stream(items, self.ntfy, self.mic, display)
+        if display:
+            display.cleanup()
 
         if self.event_bus:
             self.event_bus.publish(