duo-pass-skill

Duo-mode lockstep validation is a testing method that ensures sequential, deterministic step execution across agent workflows. It uses shared two-step workflow definitions and test fixtures to verify that step-by-step progression produces consistent, expected results before reporting completion.

You test deterministic step execution by applying a shared two-step workflow definition to a test harness. The agent performs step A, then step B in strict sequential order, and the lockstep validation fixture confirms the scripted progression works as expected before reporting completion.

You need lockstep validation fixtures when running regression tests on duo-mode workflows that require strict sequential step handling. They provide lightweight, scripted instructions to verify that step-by-step progression remains deterministic and consistently reaches the defined completion endpoint.

Yes, lockstep validation is designed for test harnesses and fixture-based scenarios. It applies a shared operational instruction body with a defined step order and completion endpoint, making it suitable for validating duo-mode workflows where agents execute sequential steps in lockstep.

The best way to validate sequential step completion is using a shared two-step workflow definition that drives deterministic execution. The lockstep fixture confirms step A then step B progress correctly, providing a consistent operational instruction body with a defined completion endpoint for regression tests.