The web UI rendered a blank screen for every user. Root cause: the page
loaded @babel/standalone from unpkg with no version pin, so the CDN silently
served Babel 8.0.0. Babel 8 defaults @babel/preset-react to the automatic JSX
runtime, which prepends `import {jsx} from "react/jsx-runtime"` to the compiled
output. An ESM import is illegal in this classic (non-module) inline <script>,
so the browser rejected the whole bundle and React never mounted — hence the
blank screen. The prior "verified live" checks were server-up/curl, which can't
catch a browser-render failure.
- Pin @babel/standalone@7.29.7 (its preset-react defaults to the classic
React.createElement runtime). Verified via headless render: app mounts, login
screen renders, no console error. Follow-up: vendor + SRI-pin the CDN libs so
a third party can't swap our front-end deps in production again.
- Close three server-side admin gaps surfaced by a permissions audit — endpoints
that were UI-hidden from members but not API-enforced: GET /api/users,
/api/email/status, /api/email/accounts now require_admin. Removed the now-dead
non-admin mailbox-row filter. 21/21 backend tests green; py_compile clean.
Keysat
cc25be4e14