fix: use string-converted findings in summary builder

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-compliance/compliance/api/agent_analyze_routes.py

@@ -77,7 +77,10 @@ async def analyze_url(req: AnalyzeRequest):
         # Step 5: Build summary
         findings = assessment.get("triggered_rules", [])
         controls = assessment.get("required_controls", [])
-        summary = _build_summary(req.url, classification, assessment, role)
+        # Convert for summary (use string lists, not raw dicts)
+        findings_str = _to_string_list(findings)
+        controls_str = _to_string_list(controls)
+        summary = _build_summary(req.url, classification, assessment, role, findings_str, controls_str)
 
         # Step 6: Send notification
         email_result = send_email(
@@ -229,17 +232,18 @@ def _risk_to_escalation(risk_level: str) -> str:
     return mapping.get(risk_level.upper() if risk_level else "", "E0")
 
 
-def _build_summary(url: str, classification: str, assessment: dict, role: str) -> str:
+def _build_summary(
+    url: str, classification: str, assessment: dict, role: str,
+    findings_str: list[str], controls_str: list[str],
+) -> str:
     """Build a German manager summary."""
     risk = assessment.get("risk_level", "unbekannt")
     score = assessment.get("risk_score", 0)
-    findings = assessment.get("triggered_rules", [])
-    controls = assessment.get("required_controls", [])
     recommendation = assessment.get("recommendation", "")
     dsfa = assessment.get("dsfa_recommended", False)
 
-    findings_text = "\n".join(f"- {f}" for f in findings[:5]) if findings else "Keine"
-    controls_text = "\n".join(f"- {c}" for c in controls[:5]) if controls else "Keine"
+    findings_text = "\n".join(f"- {f}" for f in findings_str[:5]) if findings_str else "Keine"
+    controls_text = "\n".join(f"- {c}" for c in controls_str[:5]) if controls_str else "Keine"
 
     parts = [
         f"Dokumenttyp: {classification}",