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/util.js

@@ -0,0 +1,12 @@
+'use strict';
+
+exports.getBooleanOption = (options, key) => {
+	let value = false;
+	if (key in options && typeof (value = options[key]) !== 'boolean') {
+		throw new TypeError(`Expected the "${key}" option to be a boolean`);
+	}
+	return value;
+};
+
+exports.cppdb = Symbol();
+exports.inspect = Symbol.for('nodejs.util.inspect.custom');