feat(ui): WorkerClient planning-session methods

src/ClaudeDo.Ui/Services/PlanningDtos.cs

@@ -0,0 +1,18 @@
+namespace ClaudeDo.Ui.Services;
+
+public sealed record PlanningSessionFilesDto(
+    string SessionDirectory,
+    string McpConfigPath,
+    string SystemPromptPath,
+    string InitialPromptPath);
+
+public sealed record PlanningSessionStartInfo(
+    string ParentTaskId,
+    string WorkingDir,
+    PlanningSessionFilesDto Files);
+
+public sealed record PlanningSessionResumeInfo(
+    string ParentTaskId,
+    string WorkingDir,
+    string ClaudeSessionId,
+    string McpConfigPath);

src/ClaudeDo.Ui/Services/WorkerClient.cs

@@ -347,6 +347,21 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable
         }
     }
 
+    public async Task<PlanningSessionStartInfo> StartPlanningSessionAsync(string taskId, CancellationToken ct = default)
+        => await _hub.InvokeAsync<PlanningSessionStartInfo>("StartPlanningSessionAsync", taskId, ct);
+
+    public async Task<PlanningSessionResumeInfo> ResumePlanningSessionAsync(string taskId, CancellationToken ct = default)
+        => await _hub.InvokeAsync<PlanningSessionResumeInfo>("ResumePlanningSessionAsync", taskId, ct);
+
+    public async Task DiscardPlanningSessionAsync(string taskId, CancellationToken ct = default)
+        => await _hub.InvokeAsync("DiscardPlanningSessionAsync", taskId, ct);
+
+    public async Task<int> FinalizePlanningSessionAsync(string taskId, bool queueAgentTasks = true, CancellationToken ct = default)
+        => await _hub.InvokeAsync<int>("FinalizePlanningSessionAsync", taskId, queueAgentTasks, ct);
+
+    public async Task<int> GetPendingDraftCountAsync(string taskId, CancellationToken ct = default)
+        => await _hub.InvokeAsync<int>("GetPendingDraftCountAsync", taskId, ct);
+
     // DTOs for deserializing hub responses
     private sealed class ActiveTaskDto
     {