fix(trainer): 添加键盘中断处理以保存训练进度

src/model/trainer.py

@@ -865,8 +865,11 @@ def train(
     # 开始训练
     console.print("\n[bold cyan]开始训练...[/bold cyan]")
     console.print(f"开始时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
-
-    trainer.train(resume_from=resume_from)
+    try:
+        trainer.train(resume_from=resume_from)
+    except KeyboardInterrupt:
+        console.print("[bold green]训练被终止[/bold green]")
+        trainer.save_checkpoint("interrupted_model.pt")
 
     console.print("[bold green]✓ 训练完成![/bold green]")
     console.print(f"结束时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")