更安静，也更高效的邮箱工作台

GET /api/v1/codes?mailbox=you@vip1.kdns.fr
X-API-Key: sk_xxxxxxxx

=> { "ok": true, "codes": [ { "code": "482913", ... } ] }

GET /api/v1/messages?mailbox=you@vip1.kdns.fr&folder=inbox&limit=10
X-API-Key: sk_xxxxxxxx

短链取件页：/p/<token>，返回 JSON：/api/public/pickup/<token>