移除 config.yaml 中的 auth.password，登录凭据改由 RBAC 数据库管理，首次启动时在控制台输出 admin 初始密码。
Removed auth.password from config.yaml so credentials are managed in the RBAC database, with the initial admin password shown once in the console on first startup.
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移除 config.yaml 中的 auth.password，登录凭据改由 RBAC 数据库管理，首次启动时在控制台输出 admin 初始密码。
Removed auth.password from config.yaml so credentials are managed in the RBAC database, with the initial admin password shown once in the console on first startup.