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/v22-api.ts

@@ -47,6 +47,9 @@ interface V22RequirementRow {
   creatorId?: string | null;
   creatorName?: string | null;
   creator?: { id?: string | null; name?: string | null } | null;
+  productOwnerId?: string | null;
+  productOwnerName?: string | null;
+  productOwner?: { id?: string | null; name?: string | null } | null;
   createdAt?: V22DateValue;
   updatedAt?: V22DateValue;
 }
@@ -63,6 +66,7 @@ interface V22VersionPlanRow {
   actualStartAt?: V22DateValue;
   completedAt?: V22DateValue;
   resultUrl?: string | null;
+  tasks?: unknown;
   requirementCoverage?: unknown;
   logs?: unknown;
   createdAt?: V22DateValue;
@@ -295,6 +299,7 @@ function mapRequirement(row: V22RequirementRow): Requirement {
     status: toRequirementStatus(row.status),
     priority: toPriority(row.priority),
     effort: 'M',
+    productOwner: row.productOwner?.name ?? row.productOwnerName ?? row.productOwnerId ?? '',
     creator: row.creator?.name ?? row.creatorName ?? row.creatorId ?? '',
     createdAt: requiredIso(row.createdAt),
   };
@@ -311,7 +316,7 @@ function mapVersionPlan(row: V22VersionPlanRow): VersionPlan {
     startTime: requiredIso(row.expectedStartAt),
     endTime: requiredIso(row.expectedEndAt),
     status: toPlanStatus(row.status),
-    tasks: [],
+    tasks: asArray<PlanTask>(row.tasks),
     completedRequirementIds: coverage
       .filter((item) => item?.status === 'completed')
       .map((item) => item.requirementId)