When this skill is invoked: 1. Parse Arguments Four modes: - Full spec : — engine and version provided - Engine only : — engine provided, version will be looked up - No args : — fully guided mode (engine recommendation + version) - Refresh : — update reference docs (see Section 10) - Upgrade : — migrate to a new engine version (see Section 11) --- 2. Guided Mode (No Arguments) If no engine is specified, run an interactive engine selection process: Check for existing game concept - Read if it exists — extract genre, scope, platform targets, art style, team size, and any engine recommendation f…