feat: Phase 2 — Delegated State, Auth, Review-Gate, Notifications, Zombie-Reset

backend/Models/Dashboard.cs

@@ -86,6 +86,8 @@ public sealed record DashboardTaskDto(
     string State,
     string Priority,
     string? AssignedTo,
+    Guid? ParentTaskId,
+    DateTimeOffset? DueDate,
     DateTimeOffset CreatedAt,
     DateTimeOffset UpdatedAt
 );
@@ -95,7 +97,8 @@ public sealed record CreateDashboardTaskRequest(
     string? Detail,
     string? Source,
     string? Priority,
-    string? AssignedTo
+    string? AssignedTo,
+    Guid? ParentTaskId = null
 );
 
 public sealed record UpdateDashboardTaskRequest(
@@ -103,7 +106,8 @@ public sealed record UpdateDashboardTaskRequest(
     string? Detail,
     string? Source,
     string? Priority,
-    string? AssignedTo
+    string? AssignedTo,
+    DateTimeOffset? DueDate = null
 );
 
 public sealed record UpdateDashboardTaskStatusRequest(
@@ -120,6 +124,7 @@ public sealed record AgentActivityEntry(
 public sealed record TaskBoardResponse(
     List<DashboardTaskDto> Offen,
     List<DashboardTaskDto> InProgress,
+    List<DashboardTaskDto> Delegated,
     List<DashboardTaskDto> Review,
     List<DashboardTaskDto> Blocked,
     List<DashboardTaskDto> Done
@@ -132,3 +137,20 @@ public sealed record MoveTaskRequest(
 public sealed record ImportResultDto(
     int Imported
 );
+
+public sealed record ResetStaleRequest(
+    int StaleHours = 2
+);
+
+public sealed record ResetStaleResponse(
+    int ResetCount
+);
+
+// ── Notification DTOs ──
+
+public sealed record NotificationDto(
+    Guid Id, string Type, string Title, string? Message,
+    string ForUser, Guid? TaskId, bool IsRead, DateTimeOffset CreatedAt
+);
+
+public sealed record UnreadCountDto(int Count);