Interactive walkthrough layered on the real game loop via a TutorialGuide
(optional in Game): core arc look->examine->take->inventory->use->go->go to,
verb-based alias-aware completion (movement steps require an actual room
change), closing tips, skippable via 'skip'. Data-driven tutorial.yaml +
separate TutorialLoader (not in World). Shown only on New Game.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
