统一菜单命名并移除剩余台账工具（05-31-unified-menu-remove-ledger-tools-wave2）

client/src/features/navigation/schema.ts

@@ -9,8 +9,8 @@ const PAGE_TITLES: Array<{ path: string; title: string; group: string }> = [
   { path: "/attendance", title: "考勤", group: "业务" },
   { path: "/wecom-approval-archive", title: "企微审批历史", group: "业务" },
   { path: "/projects", title: "项目", group: "业务" },
-  { path: "/contracts-registry", title: "合同台账", group: "业务" },
-  { path: "/purchase-requests", title: "采购申请", group: "业务" },
+  { path: "/contracts-registry", title: "合同", group: "业务" },
+  { path: "/purchase-requests", title: "采购", group: "业务" },
   { path: "/travel-requests", title: "差旅申请", group: "更多" },
   { path: "/budgets", title: "预算管理", group: "财务" },
   { path: "/payment-batches", title: "付款", group: "财务" },