feat(ui): answer a running task's question inline in Mission Control

TaskMonitorViewModel surfaces a pending AskUser question (TaskQuestionAsked /
TaskQuestionResolved events) with an AnswerDraft + SubmitAnswerCommand that calls
the new IWorkerClient.AnswerTaskQuestionAsync; MonitorPaneView shows an accent
question banner with an input box above the terminal. Pending question is cleared
on answer/resolve/finish and re-hydrated on attach via GetPendingQuestionAsync.
en/de localization for missionControl.question.*; test fakes updated.

src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs

@@ -20,6 +20,11 @@ public interface IWorkerClient : INotifyPropertyChanged
     event Action<string, string>? TaskMessageEvent;
     event Action<WorkerLogEntry>? WorkerLogReceivedEvent;
 
+    /// <summary>A running task raised a question via AskUser: (taskId, questionId, question).</summary>
+    event Action<string, string, string>? TaskQuestionAskedEvent;
+    /// <summary>A pending question was answered, timed out, or the run ended: (taskId, questionId).</summary>
+    event Action<string, string>? TaskQuestionResolvedEvent;
+
     event Action? PrepStartedEvent;
     event Action<string>? PrepLineEvent;
     event Action<bool>? PrepFinishedEvent;
@@ -39,6 +44,10 @@ public interface IWorkerClient : INotifyPropertyChanged
     Task WakeQueueAsync();
     Task RunNowAsync(string taskId);
     Task ContinueTaskAsync(string taskId, string followUpPrompt);
+    /// <summary>Answer a question a running task raised via AskUser.</summary>
+    Task AnswerTaskQuestionAsync(string taskId, string questionId, string answer);
+    /// <summary>The question a running task is currently blocked on, if any (for re-attach).</summary>
+    Task<PendingQuestionDto?> GetPendingQuestionAsync(string taskId);
     Task ResetTaskAsync(string taskId);
     Task CancelTaskAsync(string taskId);
     Task<List<AgentInfo>> GetAgentsAsync();