feat: AI分析第二档——get_news消息面、板块主力资金流TOPS、两融余额、截断续写机制

backend/services/ai_tools.py

@@ -71,6 +71,20 @@ TOOLS = [
                 "required": ["code", "name"]
             }
         }
+    },
+    {
+        "type": "function",
+        "function": {
+            "name": "get_news",
+            "description": "获取最近的财经快讯（新浪7x24，含宏观/行业/公司/海外动态），用于重要消息面梳理",
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "limit": {"type": "integer", "description": "获取条数，默认30，最大50"}
+                },
+                "required": []
+            }
+        }
     }
 ]
 
@@ -92,12 +106,23 @@ async def execute_tool(tool_name: str, arguments: dict) -> str:
                 arguments.get("name", ""),
                 arguments.get("days", 30)
             )
+        elif tool_name == "get_news":
+            return await _get_news(arguments.get("limit", 30))
         else:
             return json.dumps({"error": f"未知工具: {tool_name}"})
     except Exception as e:
         return json.dumps({"error": str(e)})
 
 
+async def _get_news(limit: int = 30) -> str:
+    """获取财经快讯"""
+    from services.market_extra import fetch_news
+    news = await fetch_news(limit)
+    if not news:
+        return json.dumps({"error": "快讯获取失败或暂无数据"}, ensure_ascii=False)
+    return json.dumps({"count": len(news), "items": news}, ensure_ascii=False)
+
+
 async def _get_market_dashboard() -> str:
     """获取市场看板数据"""
     from routes.market_dashboard import _build_dashboard