feat(worker): add hub methods to set task status and tags freely

Adds ForceSetStatusAsync on ITaskStateService (no transition guards)
plus SetTaskStatus / SetTaskTags / GetAllTags hub methods so the UI
can edit a task's status and tags directly. PlanningHubTests ctor
updated for the new ITaskStateService dependency.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ClaudeDo.Worker/State/TaskStateService.cs

@@ -140,6 +140,24 @@ public sealed class TaskStateService : ITaskStateService
         return new TransitionResult(true, null);
     }
 
+    // Unconditional status write — bypasses transition rules. Used by the UI's
+    // "set status freely" affordance; intentionally no guards (caller may strand
+    // the runner if used while a task is executing).
+    public async Task<TransitionResult> ForceSetStatusAsync(string taskId, TaskStatus status, CancellationToken ct)
+    {
+        await using var ctx = await _dbFactory.CreateDbContextAsync(ct);
+        var affected = await ctx.Tasks
+            .Where(t => t.Id == taskId)
+            .ExecuteUpdateAsync(s => s.SetProperty(t => t.Status, status), ct);
+
+        if (affected == 0)
+            return new TransitionResult(false, "Task not found.");
+
+        if (status == TaskStatus.Queued) _waker.Wake();
+        await _broadcaster.TaskUpdated(taskId);
+        return new TransitionResult(true, null);
+    }
+
     public async Task<TransitionResult> StartPlanningAsync(string parentId, CancellationToken ct)
     {
         await using var ctx = await _dbFactory.CreateDbContextAsync(ct);