fix: 若干改进

src/heurams/interface/screens/dashboard.py

@@ -17,6 +17,7 @@ from heurams.context import *
 import heurams.services.version as version
 import heurams.services.timer as timer
 from .preparation import PreparationScreen
+from .about import AboutScreen
 
 import pathlib
 
@@ -113,6 +114,10 @@ class DashboardScreen(Screen):
             from .precache import PrecachingScreen
             precache_screen = PrecachingScreen()
             self.app.push_screen(precache_screen)
+        elif event.button.id == "about_button":
+            from .about import AboutScreen
+            about_screen = AboutScreen()
+            self.app.push_screen(about_screen)
 
     def action_quit_app(self) -> None:
         self.app.exit()