feat: add tool-call fallback and resilient batch exports

apps/admin_console/services/report_export.py

@@ -734,9 +734,12 @@ def export_batch(batch_id: str) -> Path:
             for path in outputs:
                 archive.write(path, path.name)
             for number, report in enumerate(records, 1):
+                prefix = f"任务报告/{number:04d}_{archive_case_name(report)}"
                 for path in export_session(report["id"], formats):
-                    archive.write(
-                        path, f"任务报告/{number:04d}_{archive_case_name(report)}/{path.name}"
-                    )
+                    archive.write(path, f"{prefix}/{path.name}")
+                for source, name in session_screenshots(report):
+                    archive.write(source, f"{prefix}/步骤截图/{name}")
+                for source, name in session_videos(report):
+                    archive.write(source, f"{prefix}/任务录屏/{name}")
         temporary.replace(target)
         return target