feat: integrate webserial-mcp for ESP32 MicroPython development

- Add webserial-mcp service to docker-compose.yml
- Create wrapper script and add to crush.json
- Update STATUS.md with build status and requirements
- Note: requires bridge server + browser + ESP32 hardware

deps: generated with Crush
Assisted-by: GLM-5 via Crush <crush@charm.land>

docker-compose.yml

@@ -47,6 +47,23 @@ services:
     profiles:
       - dev
 
+  # ESP32 WebSerial MCP - MicroPython development via WebSerial
+  # NOTE: Requires bridge server running on host (esp32_bridge_server.py)
+  # and browser with WebSerial connected to ESP32
+  webserial-mcp:
+    image: kneldevstack-aimiddleware-webserial-mcp
+    build:
+      context: ./vendor/webserial-mcp
+      dockerfile: ../../dockerfiles/webserial-mcp/Dockerfile
+    container_name: kneldevstack-aimiddleware-webserial-mcp
+    restart: unless-stopped
+    environment:
+      - PYTHONUNBUFFERED=1
+      - WEBSOCKET_URL=ws://host.docker.internal:3000
+      - MCP_TIMEOUT=30
+    profiles:
+      - dev
+
   # ==========================================
   # Hosting & Infrastructure (5 servers)
   # ==========================================