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>

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  bot:
+    build: .
+    container_name: wework-xiaoai-bot
+    restart: unless-stopped
+    volumes:
+      - ./.env:/app/.env:ro
+      - ./.mi.token:/app/.mi.token
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"