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/stores/useAuthStore.ts

@@ -1,11 +1,11 @@
 'use client';
 
 import { create } from 'zustand';
-import { loadServerData } from '@/lib/server-data';
 import type { Member } from '@/lib/members';
 import { ensureMemberUsernames } from '@/lib/members';
 import { SYSTEM_ADMIN_MEMBER, ensureSystemAdminMember } from '@/lib/member-system';
 import { findMemberByUsernameCredentials, resolveAuthUserFromMembers, toAuthUser, type AuthUser } from '@/lib/auth-user';
+import { listMembersDomain } from '@/lib/domain-api';
 import { useMemberStore } from './useMemberStore';
 
 interface AuthState {
@@ -17,10 +17,6 @@ interface AuthState {
   refreshUser: () => Promise<void>;
 }
 
-interface StoredMembersData {
-  members: Member[];
-}
-
 const SESSION_KEY = 'ftb_auth_session';
 const PERSIST_KEY = 'ftb_auth_persist';
 
@@ -40,9 +36,9 @@ function clearAuthStorage() {
 
 async function loadMembersForAuth(): Promise<Member[]> {
   try {
-    const stored = await loadServerData<StoredMembersData>('members');
-    if (stored?.members?.length) {
-      const ensured = ensureSystemAdminMember(stored.members);
+    const domainMembers = await listMembersDomain();
+    if (domainMembers.length) {
+      const ensured = ensureSystemAdminMember(domainMembers);
       return ensureMemberUsernames(ensured.members).members;
     }
   } catch {}