Onboarding Flow Summary

The onboarding flow is Step 1 → Step 2 → Step 3 (account creation, content category, connect audience). An optional “add handle after Google” API is available for users who registered via Google without a handle.

Step 1   → POST /onboarding/account/create
            POST /onboarding/account/google
            (Add handle after Google — path/method TBD)
            GET  /onboarding/account/check-handle
            GET  /onboarding/account/check-email

Step 2   → GET  /onboarding/categories
            POST /onboarding/category

Step 3   → GET  /onboarding/social/platforms
            POST /onboarding/social/connect  (request body: platform + token from SDK)

Steps 4 (Import content), 5 (Monetization), and 6 (Review & launch), and onboarding state management (GET/PATCH progress) have been removed from the flow.