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/pragma.js

@@ -0,0 +1,12 @@
+'use strict';
+const { getBooleanOption, cppdb } = require('../util');
+
+module.exports = function pragma(source, options) {
+	if (options == null) options = {};
+	if (typeof source !== 'string') throw new TypeError('Expected first argument to be a string');
+	if (typeof options !== 'object') throw new TypeError('Expected second argument to be an options object');
+	const simple = getBooleanOption(options, 'simple');
+
+	const stmt = this[cppdb].prepare(`PRAGMA ${source}`, this, true);
+	return simple ? stmt.pluck().get() : stmt.all();
+};