Three features from this session, full server suite green (535/535).
TOTP 2FA (#100) — backend shipped without a UI; add it:
- Login: mfa_required -> 6-digit challenge (recovery codes accepted) -> /totp/verify.
- Settings > Account: enable (QR + confirm -> recovery codes once), regenerate,
disable; SSO accounts see "managed by your identity provider".
- /totp/setup returns a server-rendered qr_data_url (bundled qrcode dep). keyuri
folds the request Host into the issuer so multi-instance accounts are
distinguishable in the authenticator app.
Email verification on signup — hosted HARD-block / self-host SOFT-nudge:
- email_verified column; existing users asked on first login (SSO + platform
admins grandfathered); single-use 24h tokens (SHA-256 hashed).
- Gate engages only when email is configured (never locks out a no-mail instance).
GET /verify-email + POST /resend-verification (generic, no account enumeration).
- Client: "confirm your email" flow + resend, verified/error toasts, self-host
banner; onAuthSuccess refuses a tokenless response (defensive).
Tizen SSSP URL-Launcher install — Fusion-style one-URL native install:
- Server hosts /tizen/sssp_config.xml (dynamic <size>, always matches the served
.wgt) + /tizen/ScreenTinker.wgt + a human landing. lib/wgt-cache.js resolves the
signed .wgt (/data mount wins, mirroring the APK).
- build-wgt.sh also emits a static sssp_config.xml for CDN hosting.
- Retail panels require a Samsung Partner cert; dev-mode is SDB self-signed only.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
lib/totp.js: otplib wrapper; secret stored via secretbox (must be reversible to recompute
codes); recovery codes SHA-256-hashed (api_tokens discipline); verifyCode returns the
matched step and blocks intra-window replay via totp_last_step; decrypt failures return
null (no throw). lib/totp-lockout.js: per-user lockout for /totp/verify (#87 model).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
