feat: 实现流式消息显示和界面优化

graph_memory_tui/widgets/status_bar.py

@@ -15,22 +15,13 @@ class StatusBar(Static):
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
-        self._focus_indicator = "[Input]"
         self._shortcuts = "F1:帮助 F2:侧边栏 F3:工具详情 F4:查询 F5:清屏 F6:退出"
+        self._license_info = "本项目由jianf设计，以GPLv3形式开源"
 
     def on_mount(self) -> None:
         """组件挂载时"""
         self._update_display()
 
-    def update_focus(self, focus_name: str) -> None:
-        """更新焦点指示器"""
-        self._focus_indicator = f"[{focus_name}]"
-        self._update_display()
-
     def _update_display(self) -> None:
         """更新显示"""
-        self.update(f"{self._shortcuts} | 焦点: {self._focus_indicator}")
-
-    def get_focus(self) -> str:
-        """获取当前焦点"""
-        return self._focus_indicator
+        self.update(f"{self._license_info} | {self._shortcuts}")