1. /totp/recovery-info: was PUBLIC, leaking TOTP configuration status
to unauthenticated attackers. Now requires valid session (401 otherwise).
2. /totp/check-session: had an unconditional bypass that returned
authenticated:true whenever totpConfig.enabled was false. This let
anyone reach authenticated endpoints without credentials.
Now throws AuthenticationError instead.
3. /totp/setup: was unmetered despite generating secrets. Added 3/hour
per-IP rate limit in addition to the existing global 10/15min limiter.
All changes verified live via https://status.sami:
- recovery-info unauth → 401 [DC-110] (was 200)
- check-session no cookie → 401 TOTP protection required (was 200)
- 4th setup attempt → 429 [DC-429]