refactor(auth): remove keys auth module and align tests

- remove server auth module and client keys page/routes/api to simplify flow

- update mcp and scenario tests to match uuid routes and step schema

server/test/app.harness.ts

@@ -29,7 +29,6 @@ jest.mock("@nestjs/common", () => {
   return actual;
 });
 
-import { AuthModule } from "../src/auth/auth.module";
 import { BrowserModule } from "../src/browser/browser.module";
 import { SessionModule } from "../src/session/session.module";
 import { EnvironmentModule } from "../src/environment/environment.module";
@@ -42,6 +41,9 @@ import { ScenarioStepEntity } from "../src/scenario/scenario-step.entity";
 import { ScenarioRunEntity } from "../src/scenario/scenario-run.entity";
 import { ScenarioRunStepEntity } from "../src/scenario/scenario-run-step.entity";
 import { ScenarioRunLogEntity } from "../src/scenario/scenario-run-log.entity";
+import { ScenarioCredentialEntity } from "../src/scenario/scenario-credential.entity";
+import { CredentialEntity } from "../src/credential/credential.entity";
+import { SnippetEntity } from "../src/snippet/snippet.entity";
 import { HealthController } from "../src/health/health.controller";
 import { HttpExceptionFilter } from "../src/filters/http-exception.filter";
 import { LoggingInterceptor } from "../src/interceptors/logging.interceptor";
@@ -66,11 +68,13 @@ export async function buildTestApp(): Promise<INestApplication> {
           ScenarioRunEntity,
           ScenarioRunStepEntity,
           ScenarioRunLogEntity,
+          ScenarioCredentialEntity,
+          CredentialEntity,
+          SnippetEntity,
         ],
         synchronize: true,
       }),
       ScheduleModule.forRoot(),
-      AuthModule,
       BrowserModule,
       SessionModule,
       EnvironmentModule,