Filter detected sellers from conversations

tests/conversation-automation.test.ts

@@ -99,6 +99,7 @@ describe('conversation automation', () => {
       status: 'human-required',
       handoffReason: 'Potential upsell detected (domain: fansly.com).',
     });
+    expect(getSaved()?.sellerDetected).toBe(true);
   });
 
   it('completes when an inbound image is received', async () => {