Add check to the CLI guide, README, QWEN, and project structure: options, exit codes, diagnostic codes, and the checks not yet implemented. Mark compile as an unimplemented stub and fix stale element syntax in examples.
Add check to the CLI guide, README, QWEN, and project structure: options, exit codes, diagnostic codes, and the checks not yet implemented. Mark compile as an unimplemented stub and fix stale element syntax in examples.