nightshift/.nightshift/runs/20260517T212359.709956Z/tasks/TASK-001/final-notes.md
K. Hodges fa97abf0c3 Implemented deterministic diff generation via a new file_writer stage.
What changed:

  - Added file_writer stage support in nightshift/config.py:93, nightshift/agents.py:446, and nightshift/pipeline.py:374.
  - Added file-block parsing and deterministic patch generation in nightshift/patches.py:65.
  - file_writer agents now return complete file blocks:

    ```file:relative/path.py
    <complete file content>
    ```
    NightShift reads current files and generates the unified diff itself.

  - Existing patch_validator, patch_normalizer, and patch_apply still run after that.
  - Switched tiny-lisp-nightshift/nightshift.yaml:51 to type: file_writer.
  - Updated tiny-lisp-nightshift/agents/implementer.md:1 to request file blocks instead of diffs.
  - Updated README, tutorial, config reference, and design doc.

  Also added tests for parsing file blocks, generating multi-file diffs, validating those diffs, and running a full file_writer -> normalize -> validate pipeline.

  Verification: python -m unittest discover -v passes, 101 tests.
2026-05-17 15:24:10 -07:00

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Markdown

# 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`