feat: every agent and probe must have an owner passkey, enforced by the panel, the installers and fleet-enroll [CI]

backend/tests/MoShiro.Backend.Tests/BackendFixture.cs

@@ -259,6 +259,7 @@ public class BackendFixture : IAsyncLifetime
                 options.InitialAdminUser = AdminUser;
                 options.InitialAdminPassword = AdminPassword;
                 options.LoginAttemptsPerMinute = LoginAttemptsPerMinute;
+                options.RequireOwner = false; // 大部分测试不建立信任根；属主必选的测试自己打开（OwnerTests）
                 options.GeoLookupUrl = string.Empty; // 测试里不访问外部服务
                 options.PhaseDurationScale = 0.2; // 端到端测试里 connect、hold 这些固定 30 秒的阶段缩成 6 秒
             });