Struct ValidationRule 

pub struct ValidationRule {
    pub id: RuleId,
    pub severity: Severity,
    pub description: &'static str,
    pub check: RuleFn,
    pub fix: Option<FixFn>,
}

A pack-contributed validation rule (ADR-034 §9).

Pack authors declare an array of these in their Pack implementation (through the runtime PackRuntime::validation_rules() method). Rule IDs must follow the <pack>/<rule-id> namespace convention.

Example

use khive_runtime::validation::{ValidationRule, Severity};

fn check_taxa(ctx: &ValidationContext<'_>) -> Vec<Violation> {
    // ... domain-specific check ...
    vec![]
}

pub const RULES: &[ValidationRule] = &[
    ValidationRule {
        id: "biology/required-taxa-rank",
        severity: Severity::Warning,
        description: "All species entities must carry a taxa_rank property",
        check: check_taxa,
        fix: None,
    },
];

Fields

id: RuleId

Stable rule identifier in <pack>/<rule-id> format.

severity: Severity

Default severity; can be overridden in .khive/kg/rules.yaml.

description: &'static str

Human-readable description shown in kkernel kg validate output.

check: RuleFn

Whole-corpus check function.

fix: Option<FixFn>

Optional auto-fix function (ADR-034 §7). None for unfixable rules.