fix: update default linkong password

docs/technical/en/ops-runbook.md

@@ -21,7 +21,7 @@ First startup seeds two default accounts (see `DEFAULT_LOGIN_USERS` in `backend/
 | Username | Password | Role |
 | --- | --- | --- |
 | `admin` | `admin123` | `super_admin` |
-| `linkong` | `12345678` | `super_admin` |
+| `linkong` | `LK12345678` | `super_admin` |
 
 Both seed accounts are created with `email_verified = TRUE` and can log into the console immediately. Any other account must either go through the public registration flow described in the Manual, or be created via `./planet.sh createuser`.
 

docs/technical/zh/ops-runbook.md

@@ -21,7 +21,7 @@
 | 用户名 | 密码 | 角色 |
 | --- | --- | --- |
 | `admin` | `admin123` | `super_admin` |
-| `linkong` | `12345678` | `super_admin` |
+| `linkong` | `LK12345678` | `super_admin` |
 
 两个默认账号 `email_verified` 为 `true`，可直接登录控制台。任何在该列表之外的账号都必须走公开注册 + 邮箱验证流程（见使用手册），或用 `./planet.sh createuser` 命令式创建。