v0.14.1
Added — lex-config diagnostic rule types (#636)
Foundation types for the diagnostic-configuration tracking issue. lex-config now exports Severity (Allow / Warn / Deny), RuleConfig (an untagged enum accepting either "warn" or ["warn", { … }] on disk), and the RuleOptions alias (BTreeMap<String, toml::Value>). No consumers yet — the runtime consumption surface (DiagnosticsRulesConfig struct, registry, emission-site wiring) lands in follow-up PRs on the same issue. Public crate API addition, hence the Unreleased note.