Reorders fields to Name → Type → System-wide. Drops the legacy fieldset
border and the now-stale "path is generated automatically" hint. Type
radios use the new .radio-row vocabulary with always-visible
descriptions; the admin-only system-wide checkbox becomes a .switch-row
toggle. Form field names are unchanged, so the overlay-creation handler
is untouched.
Plan deviation: live_server e2e fixture now also sets LEFT4ME_ROOT.
This is required because the new test creates an overlay end-to-end via
the UI, and create_overlay_directory() writes under $LEFT4ME_ROOT,
which defaults to /var/lib/left4me (unwritable on dev machines).
The two existing live_server consumers (test_editor, test_smoke) only
visit /blueprints/<id> routes that don't touch the filesystem, so this
change is safe for them.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
