86d33635c5
## Summary
- Clear `last_model_output` and `last_result` at the start of `step()`
to prevent stale data from previous steps being recorded in history on
timeout
- Increment `n_steps` in `_execute_step`'s timeout handler to prevent
the main loop from retrying the same step number
Fixes #4480
## What changed
**`step()` — clear stale state at entry:**
```diff
self.step_start_time = time.time()
+
+ # Clear previous step state to prevent stale data from being recorded
+ self.state.last_model_output = None
+ self.state.last_result = None
+
browser_state_summary = None
```
**`_execute_step()` — ensure counter advances on timeout:**
```diff
self.state.last_result = [ActionResult(error=error_msg)]
+ # Ensure step counter advances on timeout
+ if self.state.n_steps == step + 1:
+ self.state.n_steps += 1
```
The guard `if self.state.n_steps == step + 1` prevents double-increment
when `_finalize()` has already incremented on the normal path.
<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Fixes stale history entries and a stuck step counter when a step times
out. Clears per-step state after `_prepare_context` and ensures
`n_steps` advances on timeout.
- **Bug Fixes**
- Clear `last_model_output` and `last_result` right after
`_prepare_context` (before LLM/action calls) so prompts keep previous
output and timeouts don't record stale data.
- In `_execute_step()`, increment `n_steps` after a timeout (with a
guard) so the loop moves forward.
<sup>Written for commit c0a11dc61e.
Summary will update on new commits.</sup>
<!-- End of auto-generated description by cubic. -->
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