fix: fix some change

src/modules/chatbot/providers/chatbot.service.ts

@@ -3,8 +3,6 @@ import { ConfigService } from '@nestjs/config';
 
 @Injectable()
 export class ChatbotService {
-  private openRouter: any;
-
   constructor(
     /**
      * Inject Config Service
@@ -13,23 +11,16 @@ export class ChatbotService {
   ) {}
 
   private async getOpenRouter() {
-    if (!this.openRouter) {
     const { OpenRouter } = await import('@openrouter/sdk');
 
-      this.openRouter = new OpenRouter({
+    return new OpenRouter({
       apiKey: this.configService.get<string>('openRouter.apiKey'),
     });
   }
 
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-    return this.openRouter;
-  }
-
   public async chat(message: string) {
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
     const openRouter = await this.getOpenRouter();
 
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access
     const response = await openRouter.chat.send({
       chatRequest: {
         model: this.configService.get<string>('openRouter.model'),
@@ -63,7 +54,6 @@ export class ChatbotService {
       throw new Error('Expected non-streaming response');
     }
 
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access
     const content = response.choices[0]?.message?.content;
 
     if (typeof content !== 'string') {