setup-engine

When this skill is invoked:

1. Parse Arguments

Four modes:

• Full spec: /gamedev:setup-engine godot 4.6 — engine and version provided
• Engine only: /gamedev:setup-engine unity — engine provided, version will be looked up
• No args: /gamedev:setup-engine — fully guided mode (engine recommendation + version)
• Refresh: /gamedev:setup-engine refresh — update reference docs (see Section 10)
• Upgrade: /gamedev:setup-engine upgrade [old-version] [new-version] — 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: