fix: convert UCCA findings/controls dicts to strings for response model

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

backend-compliance/compliance/api/agent_analyze_routes.py

@@ -93,8 +93,8 @@ async def analyze_url(req: AnalyzeRequest):
         risk_score=assessment.get("risk_score", 0),
         escalation_level=esc_level,
         responsible_role=role,
-        findings=findings if isinstance(findings, list) else [str(findings)],
-        required_controls=controls if isinstance(controls, list) else [str(controls)],
+        findings=_to_string_list(findings),
+        required_controls=_to_string_list(controls),
         summary=summary,
         email_status=email_result.get("status", "failed"),
         analyzed_at=datetime.now(timezone.utc).isoformat(),
@@ -204,6 +204,20 @@ async def _assess(client: httpx.AsyncClient, text: str, classification: str) ->
         return {"risk_level": "unknown", "risk_score": 0, "escalation_level": "E0"}
 
 
+def _to_string_list(items: list) -> list[str]:
+    """Convert list of dicts or strings to list of strings."""
+    result = []
+    for item in (items or []):
+        if isinstance(item, dict):
+            # UCCA returns {code, category, description} or {id, name, description}
+            desc = item.get("description", item.get("name", item.get("code", str(item))))
+            code = item.get("code", item.get("id", ""))
+            result.append(f"[{code}] {desc}" if code else str(desc))
+        else:
+            result.append(str(item))
+    return result
+
+
 def _risk_to_escalation(risk_level: str) -> str:
     """Map UCCA risk level to escalation level."""
     mapping = {