feat(ai): 优化拆解重跑与结果展示

apps/web/lib/dev-task.test.ts

@@ -0,0 +1,52 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { getEstimateHours, type DevTask } from './dev-task';
+
+function makeTask(patch: Partial<DevTask>): DevTask {
+  return {
+    id: 'task-1',
+    taskNo: 'DEV-001',
+    requirementId: 'req-1',
+    title: '实现筛选',
+    categoryId: 'cat-frontend',
+    assigneeId: '张三',
+    priority: 'P2',
+    expectedStartAt: '',
+    expectedEndAt: '',
+    status: 'todo',
+    isBlocked: false,
+    createdBy: 'tester',
+    createdAt: '2026-06-26T01:00:00.000Z',
+    updatedAt: '2026-06-26T01:00:00.000Z',
+    ...patch,
+  };
+}
+
+test('getEstimateHours prefers executor estimate over AI estimate', () => {
+  const task = makeTask({
+    estimateHours: 1.5,
+    aiEstimateHours: 0.5,
+  });
+
+  assert.equal(getEstimateHours(task), 1.5);
+});
+
+test('getEstimateHours falls back to AI estimate before schedule-derived estimate', () => {
+  const task = makeTask({
+    aiEstimateHours: 0.25,
+    expectedStartAt: '2026-06-26T01:00:00.000Z',
+    expectedEndAt: '2026-06-26T03:00:00.000Z',
+  });
+
+  assert.equal(getEstimateHours(task), 0.25);
+});
+
+test('getEstimateHours uses schedule when no executor or AI estimate exists', () => {
+  const task = makeTask({
+    expectedStartAt: '2026-06-26T01:00:00.000Z',
+    expectedEndAt: '2026-06-26T03:00:00.000Z',
+  });
+
+  assert.equal(getEstimateHours(task), 2);
+});