New users get a Gravatar-backed avatar automatically (computed from email
at signup); users can upload a custom photo instead via Settings, or
revert to the Gravatar/initials fallback. avatarUrl stays the single
resolved value (custom photo, OAuth photo, or precomputed Gravatar URL)
so every existing avatar-rendering spot across the app needs zero changes.
- users.hasCustomAvatar tracks whether avatarUrl is a real upload vs a
computed Gravatar fallback, so "remove photo" knows what to revert to.
- New /api/v1/upload/avatar-presign route (session-scoped, generic —
the existing recipe-photo presign route required a recipeId).
- CSP img-src needed www.gravatar.com added, or every browser blocks
the fallback avatar outright.
- Settings page now reads avatarUrl from a fresh DB query instead of
Better Auth's session object — the session cookie cache (5 min TTL)
was serving a stale image right after upload, showing the initials
fallback until the cache happened to expire.
Verified locally: signup auto-sets a Gravatar URL, upload persists
across reload, remove correctly reverts to Gravatar/initials.
Arnaud
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