feat: 价格调整管理模块 el-table → VxeTable 迁移

- 安装 vxe-table@4.19.6 + xe-utils@3.9.1
- main.js 全局注册 VxeTable
- priceAdjustmentManagement/index.vue 替换 4 个表格:
  - el-table → vxe-table (+ edit-config 可编辑单元格)
  - el-table-column → vxe-column
  - selection → checkbox
  - 可编辑列添加 edit-render
- 备份: backup/vxetable-migration-20260602/

openhis-ui-vue3/package.json

@@ -63,7 +63,9 @@
     "vue-area-linkage": "^5.1.0",
     "vue-cropper": "^1.1.1",
     "vue-plugin-hiprint": "^0.0.19",
-    "vue-router": "^4.3.0"
+    "vue-router": "^4.3.0",
+    "vxe-table": "^4.19.6",
+    "xe-utils": "^3.9.1"
   },
   "devDependencies": {
     "@playwright/test": "^1.58.2",
@@ -90,4 +92,4 @@
     "vitest": "^4.0.18",
     "vue-tsc": "^3.1.8"
   }
-}
+}