refactor: 下沉处理历史筛选到 audit 服务层

apps/audit/services.py

@@ -133,6 +133,53 @@ def create_notification_record(
     )
 
 
+def build_history_list_context(
+    *,
+    scenario_id: str = "",
+    keyword: str = "",
+    notify_status: str = "",
+    risk_status: str = "",
+) -> dict:
+    """
+    组装处理历史列表页所需的筛选结果与展示上下文。
+
+    View 只负责读取 query params，筛选逻辑和列表聚合统一在服务层完成。
+    """
+    logs = AgentAuditLog.objects.all()
+    if scenario_id:
+        logs = logs.filter(scenario_id=scenario_id)
+    if keyword:
+        logs = logs.filter(product_name__icontains=keyword) | logs.filter(batch_id__icontains=keyword)
+    if notify_status:
+        matched_pairs = list(
+            NotificationRecord.objects.filter(message_status=notify_status).values_list(
+                "batch_id",
+                "conversation_id",
+            )
+        )
+        logs = [
+            log
+            for log in logs
+            if (log.batch_id, log.conversation_id) in matched_pairs
+        ]
+    if risk_status:
+        logs = [
+            log
+            for log in logs
+            if (log.structured_output or {}).get("highest_risk_level") == risk_status
+            or (log.structured_output or {}).get("risk_level") == risk_status
+        ]
+    history_rows = build_history_rows(logs)
+    return {
+        "history_rows": history_rows,
+        "history_metrics": build_history_metrics(history_rows),
+        "selected_scenario_id": scenario_id,
+        "keyword": keyword,
+        "notify_status": notify_status,
+        "risk_status": risk_status,
+    }
+
+
 def build_history_rows(logs) -> list[dict]:
     """
     为处理历史列表补齐风险状态和通知状态。