Add WeWork XiaoAi TTS bot - WeChat Work long connection bridge

Receives messages from WeChat Work bot via WebSocket long connection
and speaks them through XiaoAi smart speaker TTS.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

run.py

@@ -0,0 +1,11 @@
+import asyncio
+import logging
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+)
+
+if __name__ == "__main__":
+    from app.services.ws_client import connect_and_serve
+    asyncio.run(connect_and_serve())