feat(pagination): add generic typed pagination with ordering to all list endpoints

- add PaginationQueryDto<TOrderBy> generic with orderBy and orderDir fields
- add SessionOrderBy, EnvironmentOrderBy, ScenarioOrderBy type aliases
- update session, environment, scenario services and controllers to use typed pagination
- update MCP list_sessions, list_environments, list_scenarios tools to expose orderBy/orderDir
- update tests for all list endpoints to cover page, limit, ordering, and invalid param rejection

src/auth/auth.service.ts

@@ -43,7 +43,7 @@ export class AuthService {
   async login(keyId: string, environmentName: string, sessionName?: string): Promise<{ token: string; sessionName: string }> {
     const resolvedSession = sessionName ?? crypto.randomUUID();
 
-    const env = await this.environmentService.findAll().then(all => all.find(e => e.name === environmentName));
+    const env = await this.environmentService.findAll().then(({ data }) => data.find(e => e.name === environmentName));
     if (!env) throw new NotFoundException(`Environment "${environmentName}" not found`);
 
     const loginUrl = env.urls.id_url;