changed ui.py to add command palettes commands and changed diary_list_screen.py to add access to the about_screen.py

src/pilgrim/ui/screens/diary_list_screen.py

@@ -8,6 +8,7 @@ from textual.binding import Binding
 from textual.containers import Vertical, Container, Horizontal
 
 from pilgrim.models.travel_diary import TravelDiary
+from pilgrim.ui.screens.about_screen import AboutScreen
 from pilgrim.ui.screens.edit_diary_modal import EditDiaryModal
 from pilgrim.ui.screens.new_diary_modal import NewDiaryModal
 
@@ -283,4 +284,7 @@ class DiaryListScreen(Screen):
 
     def action_open_selected_diary(self):
         """Ação do binding ENTER"""
-        self.action_open_diary()
+        self.action_open_diary()
+
+    def action_about_cmd(self):
+        self.app.push_screen(AboutScreen())

src/pilgrim/ui/ui.py

@@ -1,8 +1,12 @@
 from pathlib import Path
+from typing import Iterable
+
+from textual.app import App, SystemCommand
+from textual.screen import Screen
 
-from textual.app import App
 
 from pilgrim.service.servicemanager import ServiceManager
+from pilgrim.ui.screens.about_screen import AboutScreen
 from pilgrim.ui.screens.diary_list_screen import DiaryListScreen
 
 CSS_FILE_PATH = Path(__file__).parent / "styles" / "pilgrim.css"
@@ -11,11 +15,38 @@ CSS_FILE_PATH = Path(__file__).parent / "styles" / "pilgrim.css"
 class UIApp(App):
     CSS_PATH = CSS_FILE_PATH
 
-    def __init__(self,service_manager: ServiceManager):
+    def __init__(self,service_manager: ServiceManager, **kwargs):
-        super().__init__()
+        super().__init__(**kwargs)
         self.service_manager = service_manager
 
 
     def on_mount(self) -> None:
         """Chamado quando a app inicia. Carrega a tela principal."""
         self.push_screen(DiaryListScreen())
+
+    def get_system_commands(self, screen: Screen) -> Iterable[SystemCommand]:
+        """Return commands based on current screen."""
+
+        # Commands for DiaryListScreen
+        if isinstance(screen, DiaryListScreen):
+            yield SystemCommand(
+                "About Pilgrim",
+                "Open About Pilgrim",
+                screen.action_about_cmd
+            )
+
+        elif isinstance(screen, AboutScreen):
+            yield SystemCommand(
+                "Back to List",
+                "Return to the diary list",
+                screen.dismiss
+            )
+
+
+
+        # Always include quit command
+        yield SystemCommand(
+            "Quit Application",
+            "Exit Pilgrim",
+            self.action_quit
+        )