Constant RISK_SCORE_VERSION 

pub const RISK_SCORE_VERSION: u32 = 2;

Available on crate feature vcs-git only.

Version of the risk-score computation, covering both formulas. A single risk_score_version is stamped on every file’s output regardless of the active super::RiskFormula (the weighted sum or the percentile blend), and the persistent VCS cache keys reuse on it (see super::cache). Increment on any change that can alter an emitted risk_score, including:

• the weighted formula (weighted): its term set, weights, or categorical bumps below; and
• the percentile blend (apply_percentile): its extractor set, mid-rank scaling, or normalization.

2 added the change- and co-change-entropy terms to both formulas (issue #330).