fix: 修复配额说明重复和undefined问题

- 在editStorageForm中初始化oss_storage_quota_value和oss_quota_unit
- 删除重复的旧配额说明块，保留新的当前配额设置显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/better-sqlite3/lib/methods/serialize.js

@@ -0,0 +1,16 @@
+'use strict';
+const { cppdb } = require('../util');
+
+module.exports = function serialize(options) {
+	if (options == null) options = {};
+
+	// Validate arguments
+	if (typeof options !== 'object') throw new TypeError('Expected first argument to be an options object');
+
+	// Interpret and validate options
+	const attachedName = 'attached' in options ? options.attached : 'main';
+	if (typeof attachedName !== 'string') throw new TypeError('Expected the "attached" option to be a string');
+	if (!attachedName) throw new TypeError('The "attached" option cannot be an empty string');
+
+	return this[cppdb].serialize(attachedName);
+};