迁移合同费用通用附件

1、删除旧费用附件 API、CRUD、模型和专用前端面板，统一改用通用附件能力。

2、调整合同费用接口为 study_id 语义，并补充合同、凭证、发票等附件类型的权限映射。

3、将合同费用新建和编辑改为抽屉流程，详情页与列表页复用同一编辑组件。

4、补充数据库迁移、附件列表、合同费用抽屉和权限场景测试，覆盖旧权限移除与新流程。

frontend/src/locales/zh-CN.ts

@@ -387,6 +387,7 @@ export const TEXT = {
       lastVerified: "最近核销",
       paymentTitle: "分期付款",
       paymentEmpty: "暂无分期付款记录",
+      paymentSeqColumn: "付款期次",
       paymentSeq: "第",
       paymentSeqUnit: "笔",
       paidFlag: "打款状态",
@@ -398,15 +399,12 @@ export const TEXT = {
       verifiedDateRequired: "请填写核销日期",
       verifyRequiresPaid: "核销前需先打款",
       paymentValidationFailed: "请完善分期付款信息",
-      attachmentTitle: "合同附件",
+      attachmentTitle: "附件",
       attachmentContract: "合同",
-      attachmentContractDesc: "上传合同扫描件或签署页",
       attachmentContractEmpty: "暂无合同附件",
       attachmentVoucher: "凭证",
-      attachmentVoucherDesc: "上传打款凭证或收据",
       attachmentVoucherEmpty: "暂无凭证附件",
       attachmentInvoice: "发票",
-      attachmentInvoiceDesc: "上传发票或税务凭证",
       attachmentInvoiceEmpty: "暂无发票附件",
       uploadHint: "保存后可上传合同/凭证/发票附件",
     },
@@ -427,6 +425,8 @@ export const TEXT = {
       title: "设备管理",
       subtitle: "设备台账与状态跟踪",
       listTitle: "设备列表",
+      detailTitle: "设备详情",
+      detailSubtitle: "查看设备基础信息、资质文件与校准设置",
       emptyDescription: "设备管理模块正在建设中，敬请期待。",
     },
     fileVersionManagement: {
@@ -654,6 +654,7 @@ export const TEXT = {
       detailTitle: "医学咨询详情",
       newCategory: "新增分类",
       editCategory: "编辑分类",
+      categoryName: "分类名称",
       newItem: "新建咨询",
       editItem: "编辑咨询",
       confirmDeleteCategory: "确认删除分类「{name}」？",
@@ -1041,12 +1042,10 @@ export const TEXT = {
       待寄出: "待寄出",
       运输中: "运输中",
       已签收: "已签收",
-      已回收: "已回收",
       异常: "异常",
       PENDING: "待寄出",
       IN_TRANSIT: "运输中",
       SIGNED: "已签收",
-      RETURNED: "已回收",
       EXCEPTION: "异常",
     },
     projectStatus: {