feat: 初始化项目配置和文档- 添加 .editorconfig 文件，配置代码编辑规范

- 添加 .env 及相关文件，配置环境变量
- 添加 .eslintignore 和 .eslintrc.js 文件，配置 ESLint 规则
- 添加 .gitignore 文件，配置 Git忽略项
- 添加 .prettierignore 文件，配置 Prettier 忽略项
- 添加隐私政策文档，详细说明用户数据的收集和使用

public/tinymce/skins/ui/oxide/content.mobile.css

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Tiny Technologies, Inc. All rights reserved.
+ * Licensed under the LGPL or a commercial license.
+ * For LGPL see License.txt in the project root for license information.
+ * For commercial licenses see https://www.tiny.cloud/
+ */
+.tinymce-mobile-unfocused-selections .tinymce-mobile-unfocused-selection {
+  /* Note: this file is used inside the content, so isn't part of theming */
+  background-color: green;
+  display: inline-block;
+  opacity: 0.5;
+  position: absolute;
+}
+body {
+  -webkit-text-size-adjust: none;
+}
+body img {
+  /* this is related to the content margin */
+  max-width: 96vw;
+}
+body table img {
+  max-width: 95%;
+}
+body {
+  font-family: sans-serif;
+}
+table {
+  border-collapse: collapse;
+}