refactor(data): 收口关系表运行时数据源

- 移除已迁移业务 AppData 运行时 fallback，改走领域 API 和关系表快读
- 补齐需求产品负责人、版本计划任务 JSON 和成员 username 回填迁移
- 统一治理字典入口，并补充 AI provider、数据源契约和领域服务测试

Co-Authored-By: Codex GPT-5 <codex@openai.com>

apps/web/lib/version-plan.test.ts

@@ -36,6 +36,22 @@ test('sortPlansNewestFirst places newly created plans before older plans', () =>
   assert.deepEqual(plans.map((item) => item.id), ['plan-100', 'manual-old', 'plan-300']);
 });
 
+test('calcTotalDuration follows overview actual-duration display for short plans', () => {
+  const calcTotalDuration = (versionPlan as any).calcTotalDuration as undefined | ((plans: VersionPlan[]) => string);
+  assert.equal(typeof calcTotalDuration, 'function');
+
+  assert.equal(calcTotalDuration!([
+    plan({
+      type: 'product',
+      startTime: '2026-06-22T09:00:00',
+      endTime: '2026-06-22T10:00:00',
+      status: 'completed',
+      actualStartAt: '2026-06-22T09:00:00',
+      completedAt: '2026-06-22T10:00:00',
+    }),
+  ]), '1h（0.04天）');
+});
+
 test('collects logs across plans with plan context and newest first', () => {
   const getPlanLogsForPlans = (versionPlan as any).getPlanLogsForPlans as undefined | ((plans: VersionPlan[]) => Array<{
     id: string;
@@ -210,6 +226,112 @@ test('starts requirement coverage work while preserving existing progress', () =
   assert.equal(next.requirementCoverage?.[0]?.updatedBy, 'PM');
 });
 
+test('merges stale requirement coverage patches without dropping current sessions', () => {
+  const mergeVersionPlanPatch = (versionPlan as any).mergeVersionPlanPatch as undefined | ((
+    current: VersionPlan,
+    patch: Partial<VersionPlan>,
+  ) => Partial<VersionPlan>);
+  assert.equal(typeof mergeVersionPlanPatch, 'function');
+
+  const current = plan({
+    requirementCoverage: [
+      {
+        requirementId: 'r1',
+        status: 'not_started',
+        currentWorkStartedAt: '2026-06-29T09:30:00.000Z',
+        updatedAt: '2026-06-29T09:30:00.000Z',
+        updatedBy: 'PM',
+      },
+    ],
+  });
+
+  const merged = mergeVersionPlanPatch!(current, {
+    requirementCoverage: [
+      {
+        requirementId: 'r2',
+        status: 'not_started',
+        currentWorkStartedAt: '2026-06-29T10:00:00.000Z',
+        updatedAt: '2026-06-29T10:00:00.000Z',
+        updatedBy: 'PM',
+      },
+    ],
+  });
+
+  assert.deepEqual(
+    merged.requirementCoverage?.map((item) => [item.requirementId, item.currentWorkStartedAt]),
+    [
+      ['r2', '2026-06-29T10:00:00.000Z'],
+      ['r1', '2026-06-29T09:30:00.000Z'],
+    ],
+  );
+});
+
+test('merged requirement coverage patches preserve legacy completed ids outside the patch', () => {
+  const mergeVersionPlanPatch = (versionPlan as any).mergeVersionPlanPatch as undefined | ((
+    current: VersionPlan,
+    patch: Partial<VersionPlan>,
+  ) => Partial<VersionPlan>);
+  assert.equal(typeof mergeVersionPlanPatch, 'function');
+
+  const merged = mergeVersionPlanPatch!(plan({
+    linkedRequirementIds: ['r1', 'r2'],
+    completedRequirementIds: ['r1'],
+  }), {
+    requirementCoverage: [
+      {
+        requirementId: 'r2',
+        status: 'not_started',
+        currentWorkStartedAt: '2026-06-29T10:00:00.000Z',
+        updatedAt: '2026-06-29T10:00:00.000Z',
+        updatedBy: 'PM',
+      },
+    ],
+  });
+
+  assert.deepEqual(merged.completedRequirementIds?.sort(), ['r1']);
+});
+
+test('merges stale research direction patches without dropping current sessions', () => {
+  const mergeVersionPlanPatch = (versionPlan as any).mergeVersionPlanPatch as undefined | ((
+    current: VersionPlan,
+    patch: Partial<VersionPlan>,
+  ) => Partial<VersionPlan>);
+  assert.equal(typeof mergeVersionPlanPatch, 'function');
+
+  const current = plan({
+    type: 'research',
+    tasks: [
+      {
+        id: 'task-1',
+        title: '竞品分析',
+        status: 'in_progress',
+        currentWorkStartedAt: '2026-06-29T09:30:00.000Z',
+      },
+      { id: 'task-2', title: '用户访谈', status: 'pending' },
+    ],
+  });
+
+  const merged = mergeVersionPlanPatch!(current, {
+    tasks: [
+      { id: 'task-1', title: '竞品分析', status: 'pending' },
+      {
+        id: 'task-2',
+        title: '用户访谈',
+        status: 'in_progress',
+        currentWorkStartedAt: '2026-06-29T10:00:00.000Z',
+      },
+    ],
+  });
+
+  assert.deepEqual(
+    merged.tasks?.map((item) => [item.id, item.status, item.currentWorkStartedAt]),
+    [
+      ['task-1', 'in_progress', '2026-06-29T09:30:00.000Z'],
+      ['task-2', 'in_progress', '2026-06-29T10:00:00.000Z'],
+    ],
+  );
+});
+
 test('validates requirement coverage record drafts by started work session', () => {
   const canSaveRequirementCoverageDraft = (versionPlan as any).canSaveRequirementCoverageDraft as undefined | ((
     status: string,