Give the fleet Overview › Migrate tab the same in-content header + sub-tab
styling the per-app detail tabs use:
- Add a .config-title header (icon + title + description) inside the Migrate
pane, above the Restore/Peers sub-tabs, and hide the generic floating fleet
header for Migrate (mirrors how Backups already supplies its own heading).
- Make the .tab-button icon↔label gap explicit (flex + 6px gap) so sub-tabs
render identically whether or not the markup has whitespace between the
emoji and name spans; align the Backups sub-tab strip gap to match.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>