miao33: 从 main 同步 single_uniapp22miao，dart-sass 兼容修复，DEPLOY.md 更新

- 从 main 获取 single_uniapp22miao 子项目
- dart-sass: /deep/ -> ::v-deep，calc 运算符加空格
- DEPLOY.md 采用 shccd159 版本（4 子项目架构说明）

Made-with: Cursor

single_uniapp22miao/utils/base64src.js

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+// +----------------------------------------------------------------------
+// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
+// +----------------------------------------------------------------------
+// | Author: CRMEB Team <admin@crmeb.com>
+// +----------------------------------------------------------------------
+
+const fsm = wx.getFileSystemManager ? wx.getFileSystemManager() : null;
+const FILE_BASE_NAME = 'tmp_base64src'; //自定义文件名
+
+export function base64src(base64data, dateminutes, cb) {
+	const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || [];
+	if (!format) {
+		return (new Error('ERROR_BASE64SRC_PARSE'));
+	}
+	const filePath = `${wx.env.USER_DATA_PATH}/${dateminutes+FILE_BASE_NAME}.${format}`;
+	const buffer = wx.base64ToArrayBuffer(bodyData);
+	fsm.writeFile({
+		filePath,
+		data: buffer,
+		encoding: 'binary',
+		success() {
+			cb(filePath);
+		},
+		fail() {
+			return (new Error('ERROR_BASE64SRC_WRITE'));
+		},
+	});
+};
+//module.exports = base64src;