Regenerates the sample.png test fixture via sharp itself: the
hand-encoded base64 PNG from the plan had valid magic bytes (enough to
fool file-type's signature check) but was malformed past the header,
which libpng rejected as soon as sharp actually tried to decode it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Also configures the MariaDB pool with timezone: 'auto', since the
default 'local' mode sends dates without timezone conversion and
silently broke expires_at comparisons whenever the app host and DB
server clocks differ (caught by the findExpiredJobs test).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
anthonyandClaude Sonnet 5