feat(mission-control): give the list handler its own review task

"Let Claude handle it" now creates one ClaudeDo task per run to host the
ConPTY session (Idle/IsManual, never queued) instead of an untracked
ad-hoc tile, so the run has a real title, diff, and review outcome.
Since the handler merges its own changes straight into the list's
working dir, the task never gets a WorktreeEntity; its review range
lives as new HandlerBaseCommit/HandlerHeadCommit columns on TaskEntity
instead, reusing the existing commit-range diff machinery and keeping
it out of the worktrees overview entirely.

src/ClaudeDo.Data/Models/TaskEntity.cs

@@ -51,6 +51,15 @@ public sealed class TaskEntity
     public int SortOrder { get; set; }
     public string? SessionSkills { get; set; }
 
+    // Review range for a worktree-less task hosting an interactive "list handler" run
+    // (Mission Control's "Let Claude handle it"): the handler commits its own changes
+    // straight to the list's working dir, so there is no per-task worktree to diff. These
+    // capture the repo's HEAD at session start / submit-for-review instead, so the normal
+    // diff/get_task_diff paths can show `HandlerBaseCommit..HandlerHeadCommit` over the
+    // list's working dir exactly like a merged task's commit-range diff.
+    public string? HandlerBaseCommit { get; set; }
+    public string? HandlerHeadCommit { get; set; }
+
     public string? ParentTaskId { get; set; }
     public string? PlanningSessionId { get; set; }
     public string? PlanningSessionToken { get; set; }