feat: move Exit button to title row, reduce spacing above numpad

- Exit button relocated from bottom-right overlay to right side of title row
- Spacing between action buttons and update frame reduced 40px -> 10px
- Rebuilt DatabaseApp.exe (30.9 MB)

main.py

@@ -39,9 +39,22 @@ class DatabaseApp(App):
         content_layout = BoxLayout(orientation='vertical', spacing=30, size_hint_y=None)
         content_layout.bind(minimum_height=content_layout.setter('height'))
         
-        # Title
-        title = Label(text='Database Search & Update', font_size=28, bold=True, size_hint_y=None, height=50)
-        content_layout.add_widget(title)
+        # Title row: title label + Exit button on the right
+        title_row = BoxLayout(orientation='horizontal', size_hint_y=None, height=50, spacing=15)
+        title = Label(text='Database Search & Update', font_size=28, bold=True)
+        title_row.add_widget(title)
+        exit_btn = Button(
+            text='Exit',
+            font_size=18,
+            bold=True,
+            background_color=(0.85, 0.1, 0.1, 1),
+            color=(1, 1, 1, 1),
+            size_hint_x=None,
+            width=110
+        )
+        exit_btn.bind(on_press=lambda x: self.stop())
+        title_row.add_widget(exit_btn)
+        content_layout.add_widget(title_row)
         
         # Search section
         search_layout = GridLayout(cols=2, size_hint_y=None, height=100, spacing=15, row_force_default=True, row_default_height=45)
@@ -105,8 +118,8 @@ class DatabaseApp(App):
         button_layout.add_widget(settings_btn)
         content_layout.add_widget(button_layout)
         
-        # Extra spacing between buttons and update frame
-        content_layout.add_widget(Label(size_hint_y=None, height=40))
+        # Minimal spacing between buttons and update frame
+        content_layout.add_widget(Label(size_hint_y=None, height=10))
 
         # Update frame (initially disabled)
         self.update_frame = BoxLayout(orientation='vertical', padding=15, spacing=15, size_hint_y=None, height=200)
@@ -173,20 +186,6 @@ class DatabaseApp(App):
 
         root.add_widget(main_layout)
 
-        # Exit button — fixed to the bottom-right corner
-        exit_btn = Button(
-            text='Exit',
-            font_size=20,
-            bold=True,
-            background_color=(0.85, 0.1, 0.1, 1),
-            color=(1, 1, 1, 1),
-            size_hint=(None, None),
-            size=(120, 55),
-            pos_hint={'right': 1, 'y': 0}
-        )
-        exit_btn.bind(on_press=lambda x: self.stop())
-        root.add_widget(exit_btn)
-
         # Init DB and load data in background so the UI appears immediately
         def _init_db(dt):
             def _do():