Fixed Mobile app

Screenshot setup and Simulator selection

The mobile screenshot tools explain how to install the local Maestro CLI and offer a Simulator choice when needed.

The screenshot guide and mobile command menu include Maestro CLI installation commands and its Java requirement. Local capture needs no Maestro account or Google login. The runner also finds the CLI in its standard installer location when it is absent from PATH.

Build and capture use the single booted matching Simulator, use the only available matching device, or offer a numbered choice in an interactive terminal. Noninteractive commands list device IDs and arguments. Device selection excludes other device families. Native capture still needs developer testing in Simulator.