Agent Skills: maestro-mcp-setup

Enable the Maestro CLI's built-in MCP server (`maestro mcp`, STDIO) for this machine, robustly. Detects the Maestro CLI and a usable Java runtime, installs/guides what is missing, and registers the MCP server at LOCAL (per-machine, uncommitted) scope with an absolute command path and injected JAVA_HOME/PATH so the spawn never dies on a non-login PATH. Use when an Expo project needs Maestro device-automation tools (list_devices, inspect_screen, take_screenshot, run flows). Never registers at project/committed scope — that reintroduces the fleet-wide "-32000" failure.