fix: ts extensions (#2247)

extensions/api.d.ts

@@ -15,6 +15,7 @@ import type { RequestHandler } from 'express';
 import type FSNodeContext from '../src/backend/src/filesystem/FSNodeContext.js';
 import type helpers from '../src/backend/src/helpers.js';
 import type * as ExtensionControllerExports from './ExtensionController/src/ExtensionController.ts';
+import { type EmailService } from '@heyputer/backend/src/services/EmailService.js';
 declare global {
     namespace Express {
         interface Request {
@@ -97,6 +98,7 @@ interface ServiceNameMap {
     database: BaseDatabaseAccessService;
     user: UserService;
     'web-server': WebServerService;
+    'email': EmailService
 }
 
 export interface ExtensionEventTypeMap {