Fix invite flow v2: ensure invite consumption after auth

[mcull]

Summary

Routes guest Join → sign-in through so the post-auth callback can consume invite cookies server-side and create membership. This aligns the flow with expectations: preview as guest → join → sign-in → profile (if needed) → return as member.

Changes

• : when Join returns 401 (not logged in), redirect to instead of returning directly to the collection. The callback then:
  • Calls to upsert membership, mark invite accepted, and clear cookies.
  • Sends users with incomplete profiles to .
• (Already on main) and auth callback integration are in place.

Why

Previously, Join while signed out sent users back to the collection with invite cookies still present, but without converting them to members — they appeared as guests again. Routing through the callback guarantees the invite is consumed server-side immediately after auth.

Test Plan

1. Open while signed out → see guest banner on the collection page.
2. Click “Join Library” → redirected to sign-in via .
3. Enter email → receive code → enter code.
4. If profile incomplete, complete profile; otherwise skip.
5. Land on as a member (no guest banner).

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
stufflibrary	Ready	Preview	Comment	Oct 21, 2025 5:27am

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