observable-receipt-distiller

Distill a candidate skill only from observable receipts. 1. Read [the distillation contract](references/distillation-contract.md). 2. Use the training receipts under `receipts/training/`; reject marker files under `receipts/negative/` according to the contract. 3. Generate a candidate skill in `.agents/skills/frontmatter-repair/` by running: ```bash node .agents/skills/observable-receipt-distiller/scripts/distill-candidate.mjs \ --receipts receipts/training \ --candidate .agents/skills/frontmatter-repair \ --summary reports/distillation-summary.json ``` 4. Evaluate the candidate on the 4 holdout fixtures: ```bash node .agents/skills/observable-receipt-distiller/scripts/evaluate-candidate.mjs \ --candidate .agents/skills/frontmatter-repair \ --holdout holdout \ --summary reports/evaluation-summary.json ``` 5. Run `npm test`. 6. Do not modify any source receipt under `receipts/`. 7. Return a structured report only after the candidate exists, the holdout has run, and tests are complete.