feat(auth): replace TOTP with phone-first login

Tiku.Infrastructure/Bootstrap/PlatformAdminBootstrapper.cs

@@ -78,8 +78,7 @@ public sealed class PlatformAdminBootstrapper(
                 Name = string.IsNullOrWhiteSpace(options.DisplayName) ? "Platform Administrator" : options.DisplayName.Trim(),
                 EmailConfirmed = true,
                 Status = UserStatus.Active,
-                ForcePasswordChange = true,
-                TwoFactorEnabled = false
+                ForcePasswordChange = true
             };
             var createResult = await userManager.CreateAsync(user, options.TemporaryPassword);
             if (!createResult.Succeeded)
@@ -140,7 +139,7 @@ public sealed class PlatformAdminBootstrapper(
                     user.Email,
                     RoleCode = SuperAdminRoleCode,
                     ForcePasswordChange = true,
-                    MfaEnrollmentRequired = true
+                    LoginMethod = "account_password"
                 })
             });