fix(web): 修复 .soon/模板加载、旧文件兼容与另存为离开提示

- 删除 design1 ui 遗留代码，修复加载竞态与新建不弹保存提示
- cloud-files 归一化旧版 .soon，IndexedDB 写入完成后再跳转设计页
- 模板/本地 .soon 首次保存须另存为，离开前统一确认
- 发版缓存 bust（version.js、soon-cache.js）及宝塔 Nginx 配置文档

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/js/design1/core.js

@@ -262,6 +262,13 @@ if (typeof ipcRenderer !== 'undefined' && ipcRenderer) {
     applySysLan(window.platformBridge.getLocale());
 }
 function onCloseConfirm() {
+    if (typeof window.soonConfirmLeaveThen === 'function') {
+        window.soonConfirmLeaveThen(function () {
+            if (ipcRenderer) ipcRenderer.send('run-close');
+            else if (window.platformBridge && window.platformBridge.runClose) window.platformBridge.runClose();
+        });
+        return;
+    }
     layer.confirm(language_str("whetherSave"), {
         btn: [language_str("save"), language_str("noSave"), language_str("cancel")]
         , btn3: function (index, layero) {}