- 12 tasks: project skeleton, exceptions, segments, models, payer config, fixtures, validator, parser orchestrator, CO fixture, writer, CLI, README - TDD throughout; each task has 4-6 bite-sized steps with full code - Optional prodfile smoke test (skipped if docs/prodfiles absent) - Self-review checklist confirms full spec coverage
- Approved design for the Python 837P parser module under backend/ - Pydantic v2, click CLI, structural + CO Medicaid validation - One JSON file per claim, summary.json, continue-on-failure - Includes .gitignore for the Python + Node stack