enricher▌

Scaffold a new built-in enricher for evlog with source, tests, and documentation across six mandatory touchpoints. \n \n Enrichers follow a strict architecture: info interface, factory function returning a context mutator, header lookup, field merging with overwrite control, and early returns for missing data \n Requires updates to enricher source code, test suite, built-in documentation, overview cards, public skill reference, and README enrichers table \n All six touchpoints are mandatory; the