feat: update default height and adjust height clamping in DashbotWindowNotifier

lib/dashbot/core/model/dashbot_window_model.dart

@@ -9,7 +9,7 @@ class DashbotWindowModel {
 
   const DashbotWindowModel({
     this.width = 400,
-    this.height = 475,
+    this.height = 500,
     this.right = 50,
     this.bottom = 100,
     this.isActive = false,

lib/dashbot/core/providers/dashbot_window_notifier.dart

@@ -16,7 +16,7 @@ class DashbotWindowNotifier extends StateNotifier<DashbotWindowModel> {
     final newWidth =
         (state.width - dx).clamp(400, screenSize.width - state.right);
     final newHeight =
-        (state.height - dy).clamp(460, screenSize.height - state.bottom);
+        (state.height - dy).clamp(515, screenSize.height - state.bottom);
 
     state = state.copyWith(
       width: newWidth.toDouble(),

lib/dashbot/features/home/view/pages/home_page.dart

@@ -40,6 +40,7 @@ class _DashbotHomePageState extends ConsumerState<DashbotHomePage> {
     return Container(
       padding: const EdgeInsets.all(16),
       child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
         children: [
           kVSpacer16,
           DashbotIcons.getDashbotIcon1(width: 60),
@@ -165,6 +166,7 @@ class _DashbotHomePageState extends ConsumerState<DashbotHomePage> {
               ),
             ],
           ),
+          kVSpacer20,
         ],
       ),
     );