Sends a branded Resend email when a question receives its first answer, records accepted and failed sends, and adds collapsed answer editing with cancel behavior.
Co-authored-by: codegirl-007 <s.raide@gmail.com>
Evict/cap limiter keys, replace hard username lockouts with IP+user progressive delays cleared on success, and create bootstrap admins under the same advisory/mutex lock as role changes.
Replace username-based admin bootstrap with a one-time setup secret, rate-limit login/register, equalize login bcrypt timing, cap passwords at 72 bytes, destroy sessions on logout, and require Secure cookies when PORT is set.
Introduce a Store interface with Postgres and in-memory backends, cover mutations/CSRF/session rotation without Postgres, bound avatar decode dimensions, add truncate/prepareAvatar unit tests, and run go test -race in CI.
codegirl007