Declutter repo root: move DATA_CARD, drop stale gitkeeps and dead scripts/lib

Commit manual boundary queries source file; un-gitignore *.jsonl in sources dir

Rewrite README with canonical eval results

Scrub stage-N labels from CLI help strings, error messages, and data docs

Remove stale eval artifacts; add data directory docs and query_bank skeleton

Calibrate evidence quality gate thresholds

Add bootstrap confidence intervals to evaluation metrics

Fix EDA review-level rating distribution and resource cleanup

Fix eval workflow and align README metrics with eval_results JSON