# Final Task Notes

Task: `TASK-001`
Title: Parse Lisp expressions
Status: failed
Retry count: 3
Reason: Retry limit reached after stage 'apply_patch': Patch apply failed with code 128.

## Experiment

- Label: 
- Prompt variant: 

## Acceptance Criteria

- Parses numbers
- Parses symbols
- Parses nested lists
- Raises useful errors for unbalanced parentheses
- Includes unit tests

## Stage Results

- `plan`: pass (Agent completed after repo lookup.)
- `context`: pass (Context pack written.)
- `implement`: pass (Proposed patch written.)
- `normalize`: pass (Normalized patch written.)
- `validate_patch`: fail (Patch validation failed: patch creates existing file `lisp.py`.)
- `implement`: pass (Proposed patch written.)
- `normalize`: pass (Normalized patch written.)
- `validate_patch`: pass (Patch validation passed.)
- `apply_patch`: fail (Patch apply failed with code 128.)
- `implement`: pass (Proposed patch written.)
- `normalize`: pass (Normalized patch written.)
- `validate_patch`: pass (Patch validation passed.)
- `apply_patch`: fail (Patch apply failed with code 128.)
- `implement`: pass (Proposed patch written.)
- `normalize`: pass (Normalized patch written.)
- `validate_patch`: pass (Patch validation passed.)
- `apply_patch`: fail (Patch apply failed with code 128.)

## Modified Files

- Unavailable or none detected

## Artifacts

- Stage results: `stage-results.md`
- Context out: `context-out.md`