Install and onboarding skill for The Self Publishing AI Playbook. Collects book details, determines where the author is right now, creates project context, and routes to the correct next publishing skill. Triggers on: 'run Self Publishing AI Playbook setup', 'set up the playbook', 'personalize the playbook', 'playbook setup', '/run-self-publishing-ai-playbook-setup', or first run when project context is missing.
