Add 16 missing members to IWorkerClient (IsReconnecting, WorkerLogReceivedEvent,
PrimeFired, LastApproveTarget, Refresh/RestoreDefaultAgents, UpdateAppSettings,
prime schedule CRUD, UpdateList/UpdateListConfig, all worktree ops).
Switch all production consumers off the concrete WorkerClient type; only
Program.cs/App host still resolves the concrete registration.
Update StubWorkerClient and FakeWorkerClient to satisfy the expanded interface.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replaces six scattered "chore" literals across TaskEntity, ListEntity,
WorkerHub, ListsIslandViewModel, ListNavItemViewModel and the inline
commit type list in ListSettingsModalViewModel.
Replaces three scattered model lists (ListSettingsModalViewModel,
DetailsIslandViewModel, GeneralSettingsTabViewModel) and the hardcoded
planning model with a single source. Planning launcher now uses the
opus alias instead of pinning claude-opus-4-7.
