`.resync-msg` (the admin Force-resync result) was display:none under 640px,
so mobile admins — who trigger resync from the overflow sheet — got no
success or error feedback. The element is already a sibling of `.action-row`
(not a child), so it survives the row being hidden; the only thing hiding it
was an explicit mobile rule. Drop that rule.
e2e: a mobile admin triggers Force resync from the overflow sheet and now
sees the "Metadata updated" result (written test-first against the hidden
element, then unhidden).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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