* refactor(frontend): migrate Stack/Fleet confirms and Git source dialog
- LocalUpdateConfirmDialog -> ConfirmModal with kicker LOCAL · UPDATE
- GitSourcePanel form -> Modal with kicker {STACK} · GIT SOURCE; the
custom three-button footer (Remove / Pull now / Save) stays as-is
since ModalFooter's two-slot pattern doesn't fit a left-aligned
destructive action; ModalHeader provides the canonical chrome
- GitSourcePanel remove confirm -> destructive ConfirmModal with
kicker {STACK} · GIT · DISCONNECT
* test(e2e): scope git-source dialog assertion to the heading
The migration adds a kicker rune "<STACK> · GIT SOURCE" inside the
dialog. The previous locator getByText('Git Source', { exact: false })
matched both the kicker (uppercase, mono) and the italic-serif title,
producing a strict-mode violation. Use getByRole('heading') to target
the title specifically.
Moves the inline Node Updates dialog (~192 LOC), Local Update confirmation
dialog (~19 LOC), UpdateStatusBadge sub-component (~58 LOC), and shared
NodeUpdateStatus type into dedicated files under FleetView/. Shell drops
from 1,556 to 1,280 LOC.
Modal-local state (modalSearch, recheckingUpdates) and the
updatableRemoteCount derived value move into NodeUpdatesModal.
Anso