feat: update workspace pages and global inbox

backend/internal/logic/projects/service.go

@@ -56,6 +56,7 @@ type WorkTask struct {
 	Completed bool   `json:"completed"`
 	Owner     string `json:"owner"`
 	Due       string `json:"due"`
+	CreatedAt string `json:"createdAt"`
 	Tag       string `json:"tag"`
 }
 
@@ -323,6 +324,7 @@ func (s *Service) workspaceTasks(projectID uint) ([]WorkTask, error) {
 			Completed: task.Status == "done",
 			Owner:     owner,
 			Due:       displayOptionalTime(task.DueAt),
+			CreatedAt: displayTime(task.CreatedAt),
 			Tag:       "",
 		})
 	}

backend/internal/logic/projects/service_test.go

@@ -105,6 +105,7 @@ func TestWorkspaceMatchesFrontendContract(t *testing.T) {
 	require.Len(t, workspace.Tasks, 2)
 	require.False(t, workspace.Tasks[0].Completed)
 	require.Equal(t, "David", workspace.Tasks[0].Owner)
+	require.NotEmpty(t, workspace.Tasks[0].CreatedAt)
 	require.Len(t, workspace.AISessions, 1)
 	require.Len(t, workspace.RecentSessions, 1)
 	require.Len(t, workspace.NotesSources, 2)