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/nodemailer/.ncurc.js

@@ -0,0 +1,11 @@
+module.exports = {
+    upgrade: true,
+    reject: [
+        // API changes break existing tests
+        'proxy',
+
+        // API changes
+        'eslint',
+        'eslint-config-prettier'
+    ]
+};