Refactor navigation icon declarations in various resources for consistency; enhance Group model with new relationships and fillable properties; update Hotel and Pilgrim models with fillable attributes; improve table configurations across resources.

app/Filament/Resources/Groups/Schemas/GroupForm.php

@@ -17,12 +17,15 @@ class GroupForm
             ->components([
                 DatePicker::make('start_date')
                     ->label('Başlanýan senesi')
+                    ->native(false)
                     ->required()
                     ->live()
-                    ->afterStateUpdated(fn(Set $set, ?string $state) => $set('end_date', $state ? Carbon::parse($state)->addDays(14)->format('Y-m-d') : null)),
+                    ->afterStateUpdated(fn (Set $set, ?string $state) => $set('end_date', $state ? Carbon::parse($state)->addDays(14)->format('Y-m-d') : null))
+                    ->rules('unique:groups,start_date'),
 
                 DatePicker::make('end_date')
                     ->label('Gutarýan senesi')
+                    ->native(false)
                     ->required(),
 
                 Select::make('leader_teacher_id')