PostgreSQL raises 'column reference is ambiguous' (SQLSTATE 42702) on
ON CONFLICT DO UPDATE because unqualified column names match both the
target row and EXCLUDED. Prefix with the table name so the existing
value is referenced unambiguously. Compatible with MySQL and SQLite.
Closes#4683
Signed-off-by: SAY-5 <SAY-5@users.noreply.github.com>
Add a batched performance summary API for model square cards and show compact latency, throughput, and status metrics without increasing card size. Also fix OTP verification form submission.
