docs: refresh CLAUDE.md files and open.md to current code state

- Ui CLAUDE.md rewritten around the islands architecture (old
  MainWindow/TaskList/StatusBar VMs no longer exist)
- Worker: folder layout (Refine/, Lifecycle/Planning extras), full hub
  method/event surface, external MCP tool inventory
- Data: complete GitService operation list incl. commit-range diffs
- App: missing DI registrations; Tests: current test-area overview
- root: project list (Localization, Installer, six test projects) and
  honest docs index; plan.md/improvement-plan.md marked historical
- open.md: date bump + visual check for new diff viewer / attention band

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/ClaudeDo.Worker/CLAUDE.md

@@ -8,12 +8,14 @@ ASP.NET Core hosted service that executes tasks via Claude CLI in isolated envir
 Worker/
   State/        — TaskStateService + TransitionResult (sole owner of Status/PlanningPhase/BlockedBy writes)
   Queue/        — IQueueWaker, IQueuePicker, QueueService (BackgroundService), OverrideSlotService
-  Lifecycle/    — StaleTaskRecovery, TaskResetService, TaskMergeService
+  Lifecycle/    — StaleTaskRecovery, TaskResetService, TaskMergeService, ClaudeCliPreflight, OrphanRecovery, PlanningLineageRecovery
   Worktrees/    — WorktreeMaintenanceService
   Agents/       — AgentFileService, DefaultAgentSeeder
-  Runner/       — TaskRunner + Claude CLI integration
-  Planning/     — PlanningSessionManager, PlanningChainCoordinator, PlanningMcpService
-  External/     — ExternalMcpService
+  Runner/       — TaskRunner + Claude CLI integration; TaskRunMcpService/TaskRunMcpContext/TaskRunTokenRegistry (in-task MCP wired during execution)
+  Planning/     — PlanningSessionManager, PlanningChainCoordinator, PlanningMcpService, PlanningMergeOrchestrator, PlanningAggregator, PlanningSessionContext/PlanningTokenAuth/PlanningMcpContextAccessor, WindowsTerminalPlanningLauncher (IPlanningTerminalLauncher)
+  Refine/       — RefineRunner + RefinePrompt (hub `RefineTask`; broadcasts RefineStarted/RefineFinished)
+  External/     — ExternalMcpService + sibling tool classes
+  Config/       — WorkerConfig
   Hub/          — WorkerHub, HubBroadcaster
   Report/       — ClaudeHistoryReader, WeekReportPromptBuilder, WeekReportService; interfaces in Report/Interfaces/
   Prime/        — daily-prep ("Prime Claude"): PrimeScheduler (BackgroundService), PrimeRunner (runs the daily prep), DailyPrepPrompt (fixed prompt + CLI args + LogPath() helper), NextDueCalculator, PrimeScheduleSignal; interfaces in Prime/Interfaces/ (IPrimeRunner, IPrimeClock, IPrimeScheduleSignal, IPrimeBroadcaster)
@@ -29,11 +31,11 @@ Interfaces (e.g. `IQueueWaker`, `IPrimeClock`, `ITaskStateService`) live in an `
 - **OverrideSlotService** — owns `RunNow` / `ContinueTask`; goes through `TaskStateService.StartRunningAsync` (caller-driven, serialized by slot lock).
 - **StaleTaskRecovery** — startup-only service; calls `TaskStateService.RecoverStaleRunningAsync` to flip orphaned `Running` rows to `Failed`.
 - **External/*** — always-on MCP tools for general Claude sessions, scoped to *starting* and *observing* sessions (no worktree/merge, multi-turn, planning, or app-settings writes). Auth via optional `X-ClaudeDo-Key` header. Registered explicitly in `Program.cs`'s external app via `.WithTools<T>()`. Organized by concern:
-  - `ExternalMcpService` — task CRUD + execution: `ListTaskLists`, `ListTasks`, `GetTask`, `AddTask`, `UpdateTask`, `UpdateTaskStatus` (`Idle` / `Queued`), `ReviewTask` (`approve` / `reject_rerun` / `reject_park` / `cancel` for a WaitingForReview task), `RunTaskNow`, `CancelTask`, `DeleteTask`
+  - `ExternalMcpService` — task CRUD + execution: `ListTaskLists`, `ListTasks`, `GetTask`, `AddTask`, `AddSubtask`, `UpdateTask`, `UpdateTaskStatus` (`Idle` / `Queued`), `GetTaskStatusValues`, `ReviewTask` (`approve` / `reject_rerun` / `reject_park` / `cancel` for a WaitingForReview task), `RunTaskNow`, `ContinueTask`, `CancelTask`, `DeleteTask`; worktree/git: `GetTaskWorktree`, `GetTaskDiff`, `MergeTask`, `ListWorktrees`, `CleanupTaskWorktree`
   - `ListMcpTools` — `CreateList`, `UpdateList`, `DeleteList`
-  - `ConfigMcpTools` — `GetListConfig`, `SetListConfig`, `SetTaskConfig`
+  - `ConfigMcpTools` — `GetListConfig`, `SetListConfig`, `GetTaskConfig`, `SetTaskConfig`
   - `RunHistoryMcpTools` — `ListRuns`, `GetRun`, `GetTaskLog` (latest run's log, tail-capped at 256 KB)
-  - `AgentMcpTools` — `ListAgents`
+  - `AgentMcpTools` — `ListAgents` (class lives in `LifecycleMcpTools.cs`)
   - `LifecycleMcpTools` — `ResetFailedTask`
   - `AppSettingsMcpTools` — `GetAppSettings` (read-only)
   - `ExternalMcpService` also exposes two daily-prep tools:
@@ -67,7 +69,7 @@ Allowed transitions (enforced by `TaskStateService`):
 
 ```
 Idle               → Queued | Running (RunNow)
-Queued             → Running | Cancelled | Idle
+Queued             → Running | Cancelled | Idle | Failed (runner guard)
 Running            → WaitingForReview (standalone success, no children)
                    | WaitingForChildren (parent with pending children)
                    | Done (planning/improvement child success) | Failed | Cancelled
@@ -143,9 +145,17 @@ Each CLI invocation is recorded in the `task_runs` table via `TaskRunRepository`
 
 ## SignalR Hub
 
-**WorkerHub** methods: `Ping`, `GetActive`, `RunNow`, `CancelTask`, `WakeQueue`, `ContinueTask`, `ResetTask`, `ApproveReview(taskId, targetBranch) -> MergeResultDto` (childless task: merges its worktree then Done, conflict stays WaitingForReview; task with children: drives `PlanningMergeOrchestrator` to merge the whole unit), `ContinuePlanningMerge` / `AbortPlanningMerge` (resolve a unit-merge conflict), `PreviewMerge(taskId, targetBranch) -> MergePreviewDto` (non-destructive mergeability check), `RejectReviewToQueue`, `RejectReviewToIdle`, `CancelReview`, `GetAgents`, `RefreshAgents`, `GetAppSettings`, `UpdateAppSettings`, `CleanupFinishedWorktrees`, `ResetAllWorktrees`, `MergeTask`, `GetMergeTargets`, `UpdateList`, `UpdateListConfig`, `GetListConfig`, `UpdateTaskAgentSettings`, `GetWeekReport`, `GenerateWeekReport`, `GetDailyNotes`, `AddDailyNote`, `UpdateDailyNote`, `DeleteDailyNote`, `RunDailyPrepNow`, `ClearMyDay`, `GetLastPrepLog`
+**WorkerHub** methods, grouped:
 
-**HubBroadcaster** events: `TaskStarted`, `TaskFinished`, `TaskMessage`, `WorktreeUpdated`, `TaskUpdated`, `RunCreated`, `ListUpdated`, `PrimeFired`, `PrepStarted`, `PrepLine`, `PrepFinished`
+- Execution: `Ping`, `GetActive`, `RunNow`, `CancelTask`, `WakeQueue`, `ContinueTask`, `ResetTask`, `SetTaskStatus`, `RefineTask`
+- Review/merge: `ApproveReview(taskId, targetBranch) -> MergeResultDto` (childless task: merges its worktree then Done, conflict stays WaitingForReview; task with children: drives `PlanningMergeOrchestrator` to merge the whole unit), `ContinuePlanningMerge` / `AbortPlanningMerge` (resolve a unit-merge conflict), `PreviewMerge(taskId, targetBranch) -> MergePreviewDto` (non-destructive mergeability check), `RejectReviewToQueue`, `RejectReviewToIdle`, `CancelReview`, `MergeTask`, `GetMergeTargets`
+- Single-task conflict resolver (Layer C): `StartConflictMerge`, `GetMergeConflicts` (hunks), `WriteConflictResolution`, `ContinueMerge`, `AbortMerge`
+- Planning sessions: `StartPlanningSession`, `ResumePlanningSession`, `DiscardPlanningSession`, `FinalizePlanningSession`, `QueuePlanningSubtasks`, `GetPendingDraftCount`, `OpenInteractiveTerminal`, `GetPlanningAggregate` (per-subtask diffs), `BuildPlanningIntegrationBranch` (combined diff)
+- Worktrees: `CleanupFinishedWorktrees`, `ResetAllWorktrees`, `GetWorktreesOverview`, `SetWorktreeState`, `ForceRemoveWorktree`
+- Agents/settings/lists: `GetAgents`, `RefreshAgents`, `RestoreDefaultAgents`, `GetAppSettings`, `UpdateAppSettings`, `UpdateList`, `UpdateListConfig`, `GetListConfig`, `UpdateTaskAgentSettings`
+- Reports/notes/prep: `GetWeekReport`, `GenerateWeekReport`, `GetDailyNotes`, `AddDailyNote`, `UpdateDailyNote`, `DeleteDailyNote`, `RunDailyPrepNow`, `ClearMyDay`, `GetLastPrepLog`, `ListPrimeSchedules`, `UpsertPrimeSchedule`, `DeletePrimeSchedule`
+
+**HubBroadcaster** events: `TaskStarted`, `TaskFinished`, `TaskMessage`, `WorktreeUpdated`, `TaskUpdated`, `RunCreated`, `ListUpdated`, `WorkerLog`, `PrimeFired`, `PrepStarted`, `PrepLine`, `PrepFinished`, `PlanningMergeStarted`, `PlanningSubtaskMerged`, `PlanningMergeConflict`, `PlanningMergeAborted`, `PlanningCompleted`, `RefineStarted`, `RefineFinished`
 
 ## Config