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>

dockerfiles/webserial-mcp/Dockerfile

@@ -0,0 +1,26 @@
+# ESP32 WebSerial MCP Bridge
+# This MCP requires the bridge server to be running and a browser+ESP32 connected
+
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt && \
+    pip install --no-cache-dir nest-asyncio
+
+# Copy application files
+COPY mcp_handler.py .
+COPY mcp_client.py .
+COPY esp32_bridge_server.py .
+COPY templates/ templates/
+
+# Environment variables
+ENV PYTHONUNBUFFERED=1
+ENV WEBSOCKET_URL=ws://localhost:3000
+ENV MCP_TIMEOUT=30
+
+# Default entrypoint is the MCP client (stdio-based)
+ENTRYPOINT ["python", "mcp_client.py"]
+CMD ["ws://host.docker.internal:3000"]