Security & reliability audit follow-up. The app was already well-hardened
(strict CSP synced across index.html/_headers/netlify.toml, careful
textContent/escapeHtml in the Leaflet DOM, broad sanitizeUrl usage,
consistent author-filtering on trust-sensitive queries). This closes the
remaining gaps:
- sanitizeUrl is now HTTPS-only: bare http:// links are upgraded to
https:// (not silently dropped); every other scheme (javascript:,
data:, file:, relative) is rejected. Removes a downgrade/mixed-content/
IP-leak vector and matches the native HTTPS-only WebView. Added a
sanitizeCssString() allowlist helper for future CSS interpolation.
- Route-level ErrorBoundary (RouteErrorBoundary) wraps the routed pages,
keyed by pathname: a crash in one page now shows a recoverable
"this page slammed → go back" message while the header/nav/rest of the
app keep working, instead of the single top-level boundary blanking the
ENTIRE app. Resets automatically on navigation.
- ErrorBoundary fallback no longer leaks stack traces to users (full
detail still logged to console for us); redesigned on-brand ("Slammed",
neon, reassures that account + data are safe). Updated its test.
Author-filtering spot-check across admin/newsletter/featured/crew/stash
paths found no gaps — all trust-sensitive queries correctly constrain
authors.
Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>
