diff --git a/src/frontend/src/api.ts b/src/frontend/src/api.ts
index 2525f1a..d844940 100644
--- a/src/frontend/src/api.ts
+++ b/src/frontend/src/api.ts
@@ -276,6 +276,15 @@ export interface FlowEntry { at: string; from: string; to: string; remark: strin
 export interface TodoItem { id: string | number; title: string; status: 'not-started' | 'in-progress' | 'completed'; detail?: string; }
 export interface Heartbeat { status: 'active' | 'warn' | 'stalled' | 'unknown' | 'idle'; label: string; }
 
+export interface StageInfo { id: string; label: string; order: number; total: number; done: number; active: number; }
+
+export interface TaskProgress {
+  task_id: string; title: string;
+  total_subtasks: number; done_subtasks: number;
+  active_stage: string | null;
+  stages: StageInfo[];
+}
+
 export interface Task {
   id: string; title: string; state: string; org: string; now: string;
   eta: string; block: string; ac: string; output: string;
@@ -285,6 +294,10 @@ export interface Task {
   status?: string; plan_status?: string; nodes?: TaskNode[];
   latest_event?: TaskEvent; sourceMeta?: Record<string, unknown>;
   activity?: ActivityEntry[]; _prev_state?: string;
+  parent_task?: string | null;
+  stage?: string | null;
+  stages_json?: string;
+  progress?: TaskProgress;
 }
 
 export interface TaskNode {