- worktree-core test scans the server source via a pure Node walker
instead of shelling out to `rg`, which is not installed on CI runners.
Invariant and scope are unchanged.
- settings-host-page specs target the new detail-header label + rename
affordance (settings-detail-header-title / host-page-label-edit-button)
since the label card moved into the shared header as part of the
modular settings refactor.
- settings-navigation compact tests assert the new two-tier Back
semantics: root Back exits settings, detail Back returns to /settings.