fix auth token expiration

src/modules/auth/services/tokens.service.ts

@@ -39,7 +39,10 @@ export class TokensService {
   }
 
   private generateAccessToken(payload: ITokenPayload | IAdminTokenPayload, expiresIn: number) {
-    return this.jwtService.signAsync(payload, { expiresIn });
+    // Ensure expiresIn is passed as a string with time unit for reliability
+    // JWT library accepts: number (seconds) or string with unit (e.g., "3600s", "1h")
+    // Using string format is more explicit and prevents unit confusion
+    return this.jwtService.signAsync(payload, { expiresIn: `${expiresIn}s` });
   }
 
   async storeRefreshToken(ownerId: string, restId: string, refreshToken: string, type: RefreshTokenType) {