fix: 前端表格行类型断言修复并补充 psycopg-pool 依赖

- 审批/项目/租户/用户设置等视图新增 asXxx 类型断言辅助函数
- search-fields 由字符串改为数组传参
- backend 依赖新增 psycopg-pool，Dockerfile 依赖校验同步更新

frontend/src/views/system/UserSettingsView.vue

@@ -54,6 +54,18 @@ function isSelf(row: SystemUser) {
   return row.username === currentUsername.value
 }
 
+function asSystemUser(row: unknown): SystemUser {
+  return row as SystemUser
+}
+
+function userPermissions(row: unknown): PermissionCode[] {
+  return (asSystemUser(row).permissions || []) as PermissionCode[]
+}
+
+function permissionLabel(code: PermissionCode): string {
+  return PERMISSION_LABELS[code] || code
+}
+
 // ---------- 启停 ----------
 async function toggleStatus(row: SystemUser, next: boolean) {
   const nextStatus: UserStatus = next ? 'active' : 'disabled'
@@ -162,31 +174,31 @@ async function removeUser(row: SystemUser) {
       <el-table-column prop="role" label="角色" width="120" />
       <el-table-column label="状态" width="130">
         <template #default="{ row }">
-          <el-tag :type="statusTagType(row.status)" size="small">{{ statusLabel(row.status) }}</el-tag>
+          <el-tag :type="statusTagType(asSystemUser(row).status)" size="small">{{ statusLabel(asSystemUser(row).status) }}</el-tag>
         </template>
       </el-table-column>
       <el-table-column label="页面权限" min-width="160">
         <template #default="{ row }">
           <el-tag
-            v-for="p in (row.permissions || []).slice(0, 3)"
+            v-for="p in userPermissions(row).slice(0, 3)"
             :key="p"
             size="small"
             type="info"
             class="perm-tag"
-          >{{ PERMISSION_LABELS[p] || p }}</el-tag>
-          <span v-if="(row.permissions || []).length > 3" class="perm-more">
-            +{{ (row.permissions || []).length - 3 }}
+          >{{ permissionLabel(p) }}</el-tag>
+          <span v-if="userPermissions(row).length > 3" class="perm-more">
+            +{{ userPermissions(row).length - 3 }}
           </span>
-          <span v-if="!(row.permissions || []).length" class="perm-more">无</span>
+          <span v-if="!userPermissions(row).length" class="perm-more">无</span>
         </template>
       </el-table-column>
       <el-table-column prop="create_time" label="创建时间" min-width="180" />
       <el-table-column label="操作" width="260" fixed="right">
         <template #default="{ row }">
           <el-switch
-            :model-value="row.status === 'active'"
-            :disabled="row.protected || isSelf(row)"
-            @change="(v: any) => toggleStatus(row, v)"
+            :model-value="asSystemUser(row).status === 'active'"
+            :disabled="asSystemUser(row).protected || isSelf(asSystemUser(row))"
+            @change="(v: any) => toggleStatus(asSystemUser(row), v)"
             inline-prompt
             active-text="启用"
             inactive-text="停用"
@@ -194,19 +206,19 @@ async function removeUser(row: SystemUser) {
           <el-button
             link
             type="primary"
-            :disabled="row.protected"
-            @click="openResetPwd(row)"
+            :disabled="asSystemUser(row).protected"
+            @click="openResetPwd(asSystemUser(row))"
           >重置密码</el-button>
           <el-button
             link
             type="primary"
-            @click="openPerms(row)"
+            @click="openPerms(asSystemUser(row))"
           >页面权限</el-button>
           <el-button
             link
             type="danger"
-            :disabled="row.protected || isSelf(row)"
-            @click="removeUser(row)"
+            :disabled="asSystemUser(row).protected || isSelf(asSystemUser(row))"
+            @click="removeUser(asSystemUser(row))"
           >删除</el-button>
         </template>
       </el-table-column>