feat：增加分析进度接口

app/datafiles/insights.py

@@ -71,6 +71,15 @@ def insights_enabled() -> bool:
     )
 
 
+def ready_insights(insights: FileInsights | None) -> FileInsights | None:
+    """给 agent 看的分析结果：只要说明和列含义，图表推荐是给界面用的，不进请求（请求会进检查点）"""
+    if insights is None or insights.status != "ready":
+        return None
+    if not insights.summary and not insights.columns:
+        return None
+    return insights.model_copy(update={"suggestions": []})
+
+
 async def generate_insights(record: DataFileRecord, root: Path) -> FileInsights:
     draft = await _ask(record)
     return await asyncio.to_thread(check_draft, draft, record, root)