* feat(auth): add TOTP two-factor authentication with backup codes
Adds RFC 6238 time-based one-time password support to every tier,
integrated with the existing password and SSO login paths.
Backend:
- New MfaService wrapping otplib with a plus or minus 1 step tolerance,
base32 secret generation, and hashed single-use backup codes (bcrypt).
- user_mfa and mfa_used_tokens tables in DatabaseService. The second
table is a DB-backed replay blacklist, purged on a 60s interval.
- authMiddleware now recognizes an mfa_pending scope. A token carrying
that scope is rejected on every route except the MFA challenge and
logout, so no API surface is reachable before the second factor
clears.
- /api/auth/login issues only a short-lived mfa_pending cookie when the
user has MFA enrolled. /api/auth/login/mfa consumes that cookie,
verifies the code (or backup code), and swaps in a real session.
- /api/auth/mfa/* routes for status, enrol/start, enrol/confirm,
disable, backup-code regenerate, and SSO-bypass opt-in.
- Admin recovery path: POST /api/users/:id/mfa/reset clears the target's
MFA state, bumps token_version, and writes an audit log entry.
- CLI emergency fallback: backend/src/cli/resetMfa.ts is wired via
`npm run reset-mfa <username>` and also exported for tests.
- SSO flows (LDAP and OIDC) gate on user_mfa.sso_enforce_mfa before
issuing a session; default behaviour keeps the SSO path frictionless.
- Per-user lockout after 5 consecutive failed codes (15 min).
Frontend:
- AppStatus gains an mfa-challenge branch driven by /api/auth/status.
- New MfaChallenge screen, MfaEnrollDialog (QR plus manual secret plus
backup codes), MfaDisableDialog, MfaBackupCodesDialog.
- Account section shows a Two-factor authentication card with enrol,
regenerate, disable, and the SSO-enforce toggle (shown only when SSO
providers are configured).
- Users section gains a Reset 2FA action for admins.
Docs:
- New user guide at features/two-factor-authentication.mdx.
- New admin guide at operations/two-factor-admin.mdx.
- SSO page cross-links to the 2FA doc.
* fix(mfa): drop unused TEST_PASSWORD import and stale eslint disable
* fix(mfa): simplify e2e openAccountSettings helper to match working pattern
* fix(mfa): make e2e suite self-contained and always clean up
Test #2 called loginAs() before the MFA challenge step, which waited for
the dashboard indicator that never appears once the previous test enrolled
the user. That timeout skipped the rest of the serial block, including
the disable step, leaving MFA enabled and breaking every later spec.
Two fixes:
- Tests #2 and #3 now navigate directly to the login page instead of
piggybacking on loginAs, which only handles the password-only path.
- A new afterAll hook unconditionally disables MFA via the API using two
unused backup codes, so the DB is reset even if a test fails midway.
* fix(e2e): use backup code for mfa recovery to avoid totp replay race
The final recovery step in the backup-code replay test previously
generated a fresh TOTP to sign back in. When the timing landed inside
the same 30-second window that test #2 consumed, the server's replay
blacklist correctly rejected it, producing a ~50% flake rate. Backup
codes are single-use and sidestep the replay window, so the recovery
becomes deterministic.
* fix(e2e): drive mfa disable test through the challenge screen
Test #4 called loginAs after test #3 left MFA enabled, but loginAs
waits for the dashboard indicator and does not handle the challenge
screen, so it timed out. Drive the login manually, satisfy the
challenge with a backup code, and use a backup code for the disable
step too to avoid any TOTP replay-window race against earlier tests
in the serial block.