fix: enable instance verification in test environment when flagged

src/server.ts

@@ -50,8 +50,9 @@ export class WebhookServer {
 				return new Response('Invalid payload', { status: 400 });
 			}
 
-			// 4. Verify instance matches (skip in test environment)
+			// 4. Verify instance matches (skip in test environment unless TEST_VERIFY_INSTANCE is set)
-			if (process.env.NODE_ENV !== 'test' && payload.instance !== process.env.EVOLUTION_API_INSTANCE) {
+			if ((process.env.NODE_ENV !== 'test' || process.env.TEST_VERIFY_INSTANCE) && 
+			    payload.instance !== process.env.EVOLUTION_API_INSTANCE) {
 				return new Response('Invalid instance', { status: 403 });
 			}
 

tests/unit/server.test.ts

@@ -70,6 +70,7 @@ describe('WebhookServer', () => {
     const request = createTestRequest(payload);
     const response = await WebhookServer.handleRequest(request);
     expect(response.status).toBe(403);
+    delete process.env.TEST_VERIFY_INSTANCE;
   });
 
   test('should handle valid messages.upsert', async () => {