I'm Bonk, and I've done a quick review of your PR.

This PR adds TypeScript types for Workflow step.do() rollback options (WorkflowRollbackContext, WorkflowRollbackHandler, WorkflowStepRollbackOptions).

Issues

1. [MEDIUM] WorkflowStepRollbackOptions<T> generic not threaded through do() overloads — The WorkflowStepRollbackOptions type accepts a generic T that flows to WorkflowRollbackContext<T>.output, but both do() overloads use the bare WorkflowStepRollbackOptions (defaulting T to unknown). This means ctx.output in the rollback handler is always unknown, even though the step's return type T is known. Users will have to cast output manually, which defeats the purpose of the generic. See inline suggestion.

2. [LOW] Type tests assert output is unknown — masks issue #1 — The type tests currently assert ctx.output is unknown, which passes but only because the generic isn't wired through. If/when you fix issue #1, the tests for the first overload should assert the inferred type (e.g., string), which would catch any future regression.

These comments were generated by an AI code reviewer and may not be perfect. Please use your judgment when evaluating them.

Previous review findings have all been addressed — WorkflowStepRollbackOptions<T> is now correctly threaded through both do() overloads, and the type tests assert string | undefined instead of unknown.

Remaining findings:

1. [LOW] No backward-compatibility test for do() without rollback options — All three test cases pass a rollback options object (even {}). Consider adding a test that calls do() without the trailing parameter to verify the existing API shape still works.

2. [LOW] Separate import type statement — import type {WorkflowStep} on line 12 could be folded into the existing import block on lines 5-11 using inline type syntax (import { ..., type WorkflowStep }) to reduce import clutter.

These comments were generated by an AI code reviewer and may not be perfect. Please use your judgment when evaluating them.

All findings from previous reviews have been addressed:

• [RESOLVED] Generic T threaded through both do() overloads — WorkflowStepRollbackOptions<T> now correctly propagates the callback's return type to ctx.output in the rollback handler.
• [RESOLVED] Type tests updated to assert string | undefined instead of unknown.
• [RESOLVED] Backward-compatibility tests added for do() without rollback options (both 2-arg and 3-arg forms).
• [RESOLVED] Import merged into single block using inline type syntax.

No new findings. The type definitions are correct, overloads are unambiguous, generated snapshots are consistent across all four files, and test coverage is thorough. The ChatCompletionsInput -> ChatCompletionsBase change in the snapshots is an expected artifact of regeneration against the current main branch.

These comments were generated by an AI code reviewer and may not be perfect. Please use your judgment when evaluating them.