feat(ui): Log Visualizer overlay reachable from a clickable footer log line

tests/ClaudeDo.Worker.Tests/UiVm/TasksIslandViewModelPlanningTests.cs

@@ -71,6 +71,7 @@ sealed class FakeWorkerClient : IWorkerClient
     }
     public Task FinalizePlanningSessionAsync(string taskId, bool queueAgentTasks = true, CancellationToken ct = default) { FinalizePlanningCalls++; return Task.CompletedTask; }
     public Task<int> GetPendingDraftCountAsync(string taskId, CancellationToken ct = default) => Task.FromResult(0);
+    public Task<IReadOnlyList<WorkerLogEntry>> GetRecentLogsAsync() => Task.FromResult<IReadOnlyList<WorkerLogEntry>>(System.Array.Empty<WorkerLogEntry>());
 
     public event Action? PrepStartedEvent;
     public event Action<string>? PrepLineEvent;