A system-mode chain-of-density map of Automattic/harper (Elijah Potter, Apache-2.0) — reverse-engineered from 4,460 commits and 2,266 PRs — centred on Weir, its declarative rule language where a rule and its own tests are one artifact. With SPARK-steering, judge, and complexity-convocation findings.
rust rule-engine dsl reverse-engineering grammar-checker research-notes harper weir chain-of-density composable-systems
-
Updated
Jul 24, 2026