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/pages/WorkspaceSetupPage.tsx

@@ -22,7 +22,7 @@ const MODULE_LABELS: Record<string, string> = {
   workspace: "工作区设置",
   people: "人员管理",
   organization: "组织架构",
-  contractsRegistry: "合同台账",
+  contractsRegistry: "合同",
   workflowDefinitions: "流程定义",
   systemSettings: "管理",
   featureFlags: "功能管理",
@@ -34,7 +34,7 @@ const MODULE_LABELS: Record<string, string> = {
   notificationChannels: "通知渠道",
   workflowTasks: "待我处理",
   dashboard: "仪表盘",
-  purchaseRequests: "采购申请",
+  purchaseRequests: "采购",
   travelRequests: "差旅申请",
   budgets: "预算管理",
   paymentBatches: "付款",