Sync latest TrueGrowth updates

packages/drawnix/src/utils/task-utils.ts

@@ -143,3 +143,66 @@ export function getTaskElapsedTime(task: Task): number {
  * formatDateTime(Date.now()) // Returns "2025-12-18 14:30:25"
  */
 export const formatDateTime = formatDate;
+
+export interface TaskTimelineItem {
+  label: string;
+  value: string;
+}
+
+function isValidTimestamp(timestamp: number | undefined): timestamp is number {
+  return (
+    typeof timestamp === 'number' &&
+    Number.isFinite(timestamp) &&
+    timestamp > 0
+  );
+}
+
+/**
+ * Builds the labeled absolute times shown in task-center rows.
+ */
+export function getTaskTimelineItems(task: Task): TaskTimelineItem[] {
+  const items: TaskTimelineItem[] = [];
+
+  if (isValidTimestamp(task.createdAt)) {
+    items.push({
+      label: '创建',
+      value: formatDateTime(task.createdAt),
+    });
+  }
+
+  const completedAt = isValidTimestamp(task.completedAt)
+    ? task.completedAt
+    : task.updatedAt;
+  if (task.status === TaskStatus.COMPLETED && isValidTimestamp(completedAt)) {
+    items.push({
+      label: '完成',
+      value: formatDateTime(completedAt),
+    });
+    return items;
+  }
+
+  if (
+    (task.status === TaskStatus.FAILED ||
+      task.status === TaskStatus.CANCELLED) &&
+    isValidTimestamp(task.updatedAt)
+  ) {
+    items.push({
+      label: task.status === TaskStatus.FAILED ? '失败' : '取消',
+      value: formatDateTime(task.updatedAt),
+    });
+    return items;
+  }
+
+  if (
+    task.status === TaskStatus.PROCESSING &&
+    isValidTimestamp(task.updatedAt) &&
+    task.updatedAt !== task.createdAt
+  ) {
+    items.push({
+      label: '更新',
+      value: formatDateTime(task.updatedAt),
+    });
+  }
+
+  return items;
+}