PASS Starter graph publishes without validation errors PASS Start node is found PASS Static transition is found PASS Score above threshold PASS Score below threshold PASS Non-numeric numeric comparison fails closed PASS Rendered variable interpolation PASS Unknown variable cannot execute PHP PASS Text reply accepted PASS Empty text reply rejected PASS Invalid mobile rejected PASS Mobile normalized PASS Other person contact rejected PASS Duplicate edge detected PASS Immediate cycle detected PASS Missing start rejected RESULT: 16 passed, 0 failed