refactor: rename asset_network to asset_remote

- DB 테이블명 변경 마이그레이션 스크립트 추가 (migrate_v5_rename_remote.js)

- Backend (server.js): 쿼리 및 매핑 로직을 asset_remote 및 remotes 속성으로 업데이트

- Frontend (HWModal.ts): 폼 필드와 데이터 바인딩을 remotes로 일괄 수정

- 유틸리티 스크립트의 레퍼런스 일괄 업데이트

backup_db.js

@@ -0,0 +1,59 @@
+import mysql from 'mysql2/promise';
+import dotenv from 'dotenv';
+import * as xlsx from 'xlsx';
+import fs from 'fs';
+
+dotenv.config();
+
+const { DB_HOST, DB_USER, DB_PASS, DB_NAME, DB_PORT } = process.env;
+
+async function backup() {
+  const connection = await mysql.createConnection({
+    host: DB_HOST,
+    user: DB_USER,
+    password: DB_PASS,
+    database: DB_NAME,
+    port: parseInt(DB_PORT || '3306')
+  });
+
+  console.log('🚀 Starting Database Backup Process...');
+
+  const tables = [
+    'asset_pc', 'asset_server', 'asset_storage', 'asset_remote', 
+    'asset_equipment', 'asset_office_supplies', 'asset_survey', 'asset_vip'
+  ];
+  
+  const wb = xlsx.utils.book_new();
+
+  for (const table of tables) {
+    try {
+      // 1. Create table backup
+      await connection.query(`DROP TABLE IF EXISTS ${table}_backup`);
+      await connection.query(`CREATE TABLE ${table}_backup AS SELECT * FROM ${table}`);
+      console.log(`✅ Table backup created: ${table} -> ${table}_backup`);
+
+      // 2. Fetch data for Excel
+      const [rows] = await connection.query(`SELECT * FROM ${table}`);
+      if (rows.length > 0) {
+          const ws = xlsx.utils.json_to_sheet(rows);
+          // Sheet names max length is 31 chars
+          const sheetName = table.substring(0, 31);
+          xlsx.utils.book_append_sheet(wb, ws, sheetName);
+      }
+    } catch (e) {
+      console.warn(`⚠️ Skipped ${table}: ${e.message}`);
+    }
+  }
+
+  // 3. Write Excel file
+  const fileName = 'backupDB_20260608.xlsx';
+  xlsx.writeFile(wb, fileName);
+  console.log(`✅ Excel data exported successfully to ${fileName}`);
+  
+  await connection.end();
+}
+
+backup().catch(err => {
+  console.error('❌ Backup Failed:', err);
+  process.exit(1);
+});