feat: added navigation_panel, new buttons for edit and delete timer

kv/navigation_panel.kv

@@ -0,0 +1,44 @@
+#:kivy 2.3.1
+
+<CommonNavigationRailItem@MDBoxLayout>:
+    icon: ""
+    text: ""
+    orientation: "vertical"
+    spacing: "4dp"
+    size_hint_y: None
+    height: "72dp"
+
+    MDNavigationRailItemIcon:
+        icon: root.icon
+
+    MDNavigationRailItemLabel:
+        text: root.text
+
+<NavigationPanel@MDBoxLayout>:
+    orientation: "horizontal"
+
+    MDNavigationRail:
+        id: rail
+
+        MDNavigationRailFabButton:
+            icon: "clock-outline"
+
+        CommonNavigationRailItem:
+            icon: "timer-outline"
+            text: "Таймеры"
+
+        CommonNavigationRailItem:
+            icon: "compass-outline"
+            text: "Гид"
+
+        CommonNavigationRailItem:
+            icon: "information-outline"
+            text: "Инфо"
+
+        MDScreen:
+            pos_hint: {"bottom": .98}
+            y: "12dp"
+            
+            MDNavigationRailMenuButton:
+                icon: "menu"
+                on_release: app.open_menu(self)

kv/timers_screen.kv

@@ -1,4 +1,5 @@
 #:kivy 2.3.1
+#:include kv/navigation_panel.kv
 
 # Кастомная панель для каждого таймера
 <ExpansionPanelItem>:
@@ -25,14 +26,14 @@
         MDLabel:
             text: "Информация о таймере"
             adaptive_height: True
-            padding_x: "16dp"
-            padding_y: "12dp"
+            padding: "16dp", "12dp"
 
         MDListItem:
             theme_bg_color: "Custom"
             md_bg_color: self.theme_cls.surfaceContainerLowColor
             ripple_effect: False
             on_release: None
+            
             MDListItemLeadingIcon:
                 icon: "information-outline"
             MDListItemHeadlineText:
@@ -40,33 +41,49 @@
 
         MDBoxLayout:
             padding: [8, 8, 0, 0]
+            spacing: 8
             size_hint_y: None
             height: self.minimum_height
 
             MDButton:
+                timer_id: root.timer_id
+                style: "outlined"
+                size_hint_x: 1
+                on_release: app.root.get_screen("timers_screen").switch_timer(self)
+
+                MDButtonText:
+                    text: "Открыть"
+
+            MDButton:
+                timer_id: root.id
                 style: "outlined"
                 size_hint_x: 1
 
                 MDButtonText:
-                    text: "Открыть"          
+                    text: "Редактировать"
+
+            MDButton:
+                timer_id: root.id
+                style: "outlined"
+                size_hint_x: 1
+
+                MDButtonText:
+                    text: "Удалить"
 
 # Основной экран
 <TimersScreen>:
-    md_bg_color: self.theme_cls.backgroundColor
-    
-    MDIconButton:
-        on_release: app.open_menu(self)
-        pos_hint: {"top": .98}
-        x: "12dp"
-        icon: "menu"
+    NavigationPanel:
 
-    ScrollView:
-        size_hint_x: .9
-        pos_hint: {"center_x": .5, "center_y": .5}
-        do_scroll_x: False
-        do_scroll_y: True
+        MDScreen:
+            md_bg_color: self.theme_cls.secondaryContainerColor
 
-        MDList:
-            id: container
-            spacing: "8dp"
-            padding: [56, 8, 56, 0]   # [слева, сверху, справа, снизу]
+            ScrollView:
+                size_hint_x: .9
+                pos_hint: {"center_x": .5, "center_y": .5}
+                do_scroll_x: False
+                do_scroll_y: True
+
+                MDList:
+                    id: container
+                    spacing: "8dp"
+                    padding: [56, 8, 56, 0]   # [слева, сверху, справа, снизу]