H1: AuthUser now JOINs session→user and sources role/ban/event from the live
DB row instead of trusting JWT claims. Bans take effect on the next request;
demotion/promotion is immediate. Adds Session::find_auth_context and rejects
tokens whose sub/event_id disagree with the session row. This also closes M2
(banned export) and M3 (banned edit/delete) globally — banned users can no
longer pass the AuthUser extractor.
Adds Session::delete_by_user_id and revokes all of a user's sessions on
ban_user, set_role, and reset_user_pin so existing JWTs die immediately.
ban_user also emits a user-banned SSE for forced client logout.
H9: reset_user_pin used a non-existent column pin_failed_attempts (runtime
sqlx, so it 500'd in prod). Corrected to failed_pin_attempts — the only
account-recovery path now works.
C4: LightboxModal posted comments to /comment (singular); backend only
registers /comments. One-character route fix re-enables the comment feature.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2068e8c1f3