Skill Continuous Improvement: RED-GREEN-REFACTOR

Adapts the RED-GREEN-REFACTOR cycle from software testing to skill authoring. The key insight: a skill is a testable contract. The failure to follow the contract is observable. Always observe the failure BEFORE writing the fix.

Integrated with:

• os-eval-runner -- runs eval_runner.py as the GREEN verification step
• os-learning-loop -- uses this methodology to gate every proposed skill patch
• evals/evals.json + results.tsv -- autoresearch eval format for longitudinal tracking

The TDD Mapping