Add tool quality report contract

crates/crank-core/tests/unit/tool_quality.rs

@@ -0,0 +1,32 @@
+use crank_core::{ToolQualityFinding, ToolQualityReport, ToolQualitySeverity};
+
+#[test]
+fn serializes_tool_quality_finding_contract() {
+    let finding = ToolQualityFinding {
+        severity: ToolQualitySeverity::Warning,
+        code: "tool_description_too_short".to_owned(),
+        message: "Описание инструмента слишком короткое.".to_owned(),
+        suggested_action: Some("Добавьте назначение и условия применения инструмента.".to_owned()),
+        field_path: Some("tool_description.description".to_owned()),
+    };
+
+    let value = serde_json::to_value(finding).unwrap();
+
+    assert_eq!(value["severity"], "warning");
+    assert_eq!(value["code"], "tool_description_too_short");
+    assert_eq!(value["field_path"], "tool_description.description");
+}
+
+#[test]
+fn report_is_blocking_when_error_finding_exists() {
+    let report = ToolQualityReport::new(vec![ToolQualityFinding {
+        severity: ToolQualitySeverity::Error,
+        code: "tool_name_missing".to_owned(),
+        message: "Имя инструмента обязательно.".to_owned(),
+        suggested_action: None,
+        field_path: Some("name".to_owned()),
+    }]);
+
+    assert!(report.blocking);
+    assert_eq!(report.findings.len(), 1);
+}