PublishWarnings.tsx had unit tests for the presentational banner, but
nothing asserted that result.warnings from publish() actually flows
through TopBar's handlePublish into it. That 3-line seam is exactly what
this feature exists to fix -- the backend always returned warnings, and
TopBar discarded them by only checking result.success, so the
contact-form-relay warning was dead code for its entire life.
Adds TopBar.test.tsx asserting: warnings render after a successful
publish with warnings, no banner renders when warnings is absent, a
warning doesn't present as a publish failure, warnings survive the 3s
"Published" flash (fake timers, advanced past 3000ms), and a fresh
publish clears stale warnings from the previous one.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
handlePublish's JSON response has always included a `warnings` array
(e.g. the contact-form relay's "submissions will not be delivered"
notice), but nothing in the editor ever read it. Adds a PublishWarnings
banner, held in its own state independent of the 3s publishStatus
flash so the customer has time to read it, rendered in both the
desktop and mobile TopBar branches.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
shadowdao