SaaS onboarding + Stripe billing
Self-serve signup, the onboarding wizard, the three-plan Stripe model, real Checkout + customer portal, and plan enforcement on /api/sites.
- Self-serve signup (gated by CORE_SIGNUP_ENABLED) replaces the request-access flow.
- Onboarding wizard: workspace → first site → tracker snippet → first event → /onboarding/success.
- Three plans wired end-to-end: Pro $49/mo (Core + Agent), Agency $199/mo (Core + Agent + Team Operations), Business custom (Core + Agent + Advanced).
- + 3 more — see the release page