统一页面右上角操作区（05-31-unified-page-header-actions）

.trellis/spec/hyb-oa/frontend-react-vite-design.md

@@ -62,6 +62,12 @@ reference, not a copy of Feishu or Ant Design branding.
   action: `新建报销`, `新建采购`, `新增合同`, `新增资产`, `新建项目`. Workbench,
   pending-task, notification and read-only record pages must not force a header
   button for visual symmetry.
+- PC page header actions follow a strict mature enterprise rule: the title
+  right side may have zero buttons, one page-level primary action, or one
+  primary action plus one `更多`. Do not place `筛选`, `导出`, `刷新`,
+  `显示测试数据`, category managers, export tools or other list-level tools as
+  persistent header-right buttons. Put those in the list toolbar, filter panel,
+  explicit management panel, row action or detail action area.
 - Button labels use common enterprise verbs: `处理`, `去处理`, `查看详情`,
   `查看全部`, `查看进度`, `继续编辑`, `新建`, `新增`, `提交`, `保存`, `取消`,
   `撤回`, `作废`, `归档`, `更多`. Do not use slogan-like or invented labels
@@ -94,6 +100,10 @@ reference, not a copy of Feishu or Ant Design branding.
   ranges, contract type, sensitivity, export and test-data toggles belong in
   `筛选`, `更多`, clearly named role-only actions or a tab-specific advanced
   area; default-visible filters should not occupy multiple rows.
+- List toolbars may show one or two high-frequency controls beside common
+  filters. Low-frequency navigation, export, expiry lists, trial-data toggles
+  and troubleshooting actions should collapse into `更多` or advanced filters
+  instead of forming a second row of persistent buttons.
 - Business list columns show object identity, counterpart/person, amount/date,
   state and operation. `下一步` is not a default list column or right-side help
   panel. Use short state labels such as `待补材料` or `待你处理`; longer guidance