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#28 - TOTP rate limiting (verifyTotp): added totpRateLimiter (10 req/30s), throws TOO_MANY_REQUESTS before DB hit; 16 unit tests including rate-limit exceeded + userId key isolation. #29 - /api/reports/allocations role check: only ADMIN/MANAGER/CONTROLLER may access; returns 403 otherwise; 9 unit tests (401 unauthenticated, 403 for USER/VIEWER, 200 for allowed roles + xlsx format). #31 - pgAdmin credentials moved out of docker-compose.yml into env vars; PGADMIN_PASSWORD is now required (:?) to prevent accidental plaintext exposure in committed files. #34 - Server-side HTML sanitization for comment bodies via stripHtml(): strips all tags + decodes safe entities before persistence; 16 unit tests covering passthrough, injection patterns, entity decoding. #35 - MFA setup prompt banner (MfaPromptBanner): shown to ADMIN/MANAGER users without TOTP enabled; user-scoped localStorage snooze (7 days); links to /account/security; accessibility role=alert; 7 structural unit tests. #33 - Auth anomaly alerting cron (/api/cron/auth-anomaly-check): detects HIGH_GLOBAL_FAILURE_RATE and CONCENTRATED_FAILURES in 30-minute window; CRITICAL notification to ADMINs; fail-closed via verifyCronSecret; 10 unit tests. #32 - MFA enforcement policy: added requireMfaForRoles field to SystemSettings schema + Prisma migration; auth.ts blocks login with MFA_REQUIRED_SETUP signal if role is enforced but TOTP not set up; signin page redirects to /account/security?mfa_required=1; settings schema + view model updated; 11 unit tests. #30 - API keys architecture decision documented in LEARNINGS.md; no code written — product decision required before implementation. Co-Authored-By: claude-flow <ruv@ruv.net>