feat(controls): B1 — custom semgrep detectors for 4 CRA controls (#218)

compliance-agent/src/controls/triage.rs

@@ -44,10 +44,14 @@ impl<J: ControlJudge> ControlTriage<J> {
     /// Triage one tool finding. `region` is the code around the finding, used as
     /// the grounding evidence for the judge.
     pub async fn triage(&self, finding: &Finding, region: &CandidateRegion) -> TriageOutcome {
-        let Some(cwe) = finding.cwe.as_deref() else {
-            return TriageOutcome::Unmapped;
-        };
-        let mapped = self.map.controls_for(&finding.scanner, cwe);
+        // Match by CWE (off-the-shelf findings) and/or rule id (our custom
+        // detectors, which carry no LUT-bound CWE). A finding with neither is
+        // simply unmapped.
+        let mapped = self.map.controls_for_finding(
+            &finding.scanner,
+            finding.cwe.as_deref(),
+            finding.rule_id.as_deref(),
+        );
         if mapped.is_empty() {
             return TriageOutcome::Unmapped;
         }
@@ -162,6 +166,52 @@ mod tests {
         assert_eq!(out, TriageOutcome::FalsePositive);
     }
 
+    #[tokio::test]
+    async fn custom_rule_finding_without_cwe_is_confirmed() {
+        // A custom detector finding carries a rule id but no LUT-bound CWE; it must
+        // still map (by rule id) and confirm.
+        let mut specs = specs();
+        specs.insert(
+            "cra-ai-1".to_string(),
+            ControlCheckSpec {
+                control_id: "cra-ai-1".into(),
+                title: "Secure-by-Default".into(),
+                requirement: "Ship secure defaults".into(),
+                default_cwe: None,
+                severity: Severity::Medium,
+            },
+        );
+        let triage = ControlTriage::new(
+            StubJudge {
+                verdict: LlmVerdict {
+                    violates: true,
+                    snippet: "app.run(debug=True)".into(),
+                    cwe: None,
+                    confidence: 0.9,
+                },
+            },
+            ControlMap::cra().unwrap(),
+            specs,
+        );
+        let mut f = Finding::new(
+            "repo".into(),
+            "fp".into(),
+            "semgrep".into(),
+            ScanType::Sast,
+            "flask debug".into(),
+            "desc".into(),
+            Severity::Medium,
+        );
+        f.rule_id = Some("tmp.x.cra-ai-1-flask-debug-enabled".into()); // no cwe
+        let region = CandidateRegion {
+            file: "app.py".into(),
+            start_line: 1,
+            content: "app.run(debug=True)\n".into(),
+        };
+        let out = triage.triage(&f, &region).await;
+        assert_eq!(out, TriageOutcome::Confirmed(vec!["cra-ai-1".to_string()]));
+    }
+
     #[tokio::test]
     async fn unmapped_cwe_is_left_untagged() {
         let triage = ControlTriage::new(