feat(worker): route Serilog Warn/Error to footer + buffer recent logs for overlay

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -6,6 +6,7 @@ using ClaudeDo.Data.Repositories;
 using ClaudeDo.Worker.Agents;
 using ClaudeDo.Worker.Config;
 using ClaudeDo.Worker.Lifecycle;
+using ClaudeDo.Worker.Logging;
 using ClaudeDo.Worker.Online;
 using ClaudeDo.Worker.Planning;
 using ClaudeDo.Worker.Prime;
@@ -113,6 +114,7 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
     private readonly WorkerConfig _cfg;
     private readonly OnlineInboxConfig _onlineInboxConfig;
     private readonly OnlineTokenStore _onlineTokenStore;
+    private readonly LogRingBuffer? _logBuffer;
 
     public WorkerHub(
         QueueService queue,
@@ -136,7 +138,8 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         IRefineRunner refineRunner,
         WorkerConfig cfg,
         OnlineInboxConfig onlineInboxConfig,
-        OnlineTokenStore onlineTokenStore)
+        OnlineTokenStore onlineTokenStore,
+        LogRingBuffer? logBuffer = null)
     {
         _queue = queue;
         _waker = waker;
@@ -160,8 +163,13 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         _cfg = cfg;
         _onlineInboxConfig = onlineInboxConfig;
         _onlineTokenStore = onlineTokenStore;
+        _logBuffer = logBuffer;
     }
 
+    /// <summary>Recent worker log records (last 30 min, all levels) for the Log Visualizer overlay.</summary>
+    public IReadOnlyList<WorkerLogRecord> GetRecentLogs() =>
+        _logBuffer?.Snapshot() ?? Array.Empty<WorkerLogRecord>();
+
     // Maps the two exceptions service methods throw into client-facing HubExceptions:
     // KeyNotFoundException -> notFoundMessage, InvalidOperationException -> its own message.
     private static async Task HubGuard(Func<Task> action, string notFoundMessage = "task not found")