run-iteration-eval

Measures a skill change by running the content cases in evals/content/v2/evals-v2.json through claude -p and grading the outputs. Outputs land in skills-workspace/iteration-<TAG>/.

The runner and grader are split on purpose: running calls Claude and costs tokens; grading is pure regex Python and is free to re-run on outputs that already exist. Never re-run the runner just to re-score — re-grade instead.

Steps

Sync the cache first — non-negotiable. The runner loads the skill from the plugin cache, not skills/. Run the sync-skill-cache skill (or its script directly). If you skip this, the eval grades the previously-published skill and the entire run is wasted:
```
bash .claude/skills/sync-skill-cache/scripts/sync-cache.sh
```