feat(admin): Phase 4 行业配置管理页面 + 账号行业授权

- 新增 Industries.tsx: 行业列表(ProTable) + 编辑弹窗(关键词/prompt/痛点种子) + 新建弹窗
- 新增 services/industries.ts: 行业 API 服务层(list/create/update/fullConfig/accountIndustries)
- 增强 Accounts.tsx: 编辑弹窗添加行业授权多选, 自动获取/同步用户行业
- 注册 /industries 路由 + 侧边栏导航(ShopOutlined)

admin-v2/src/router/index.tsx

@@ -36,6 +36,7 @@ export const router = createBrowserRouter([
       { path: 'prompts', lazy: () => import('@/pages/Prompts').then((m) => ({ Component: m.default })) },
       { path: 'logs', lazy: () => import('@/pages/Logs').then((m) => ({ Component: m.default })) },
       { path: 'config-sync', lazy: () => import('@/pages/ConfigSync').then((m) => ({ Component: m.default })) },
+      { path: 'industries', lazy: () => import('@/pages/Industries').then((m) => ({ Component: m.default })) },
     ],
   },
 ])