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>
shadowdaoandClaude Opus 4.8
c712a69c4a