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/src/scenario/dto/scenario-export.dto.ts

@@ -2,6 +2,7 @@ import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";
 import { Type } from "class-transformer";
 import {
   IsArray,
+  IsIn,
   IsInt,
   IsNotEmpty,
   IsOptional,