first commit

app/Filament/Admin/Resources/Levels/LevelResource.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels;
+
+use App\Filament\Admin\Resources\Levels\Pages\CreateLevel;
+use App\Filament\Admin\Resources\Levels\Pages\EditLevel;
+use App\Filament\Admin\Resources\Levels\Pages\ListLevels;
+use App\Filament\Admin\Resources\Levels\Schemas\LevelForm;
+use App\Filament\Admin\Resources\Levels\Tables\LevelsTable;
+use App\Models\Level;
+use BackedEnum;
+use Filament\Resources\Resource;
+use Filament\Schemas\Schema;
+use Filament\Support\Icons\Heroicon;
+use Filament\Tables\Table;
+
+class LevelResource extends Resource
+{
+    protected static ?string $model = Level::class;
+
+    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedRectangleStack;
+
+    protected static ?string $recordTitleAttribute = 'name';
+
+    public static function form(Schema $schema): Schema
+    {
+        return LevelForm::configure($schema);
+    }
+
+    public static function table(Table $table): Table
+    {
+        return LevelsTable::configure($table);
+    }
+
+    public static function getRelations(): array
+    {
+        return [
+            //
+        ];
+    }
+
+    public static function getPages(): array
+    {
+        return [
+            'index' => ListLevels::route('/'),
+            'create' => CreateLevel::route('/create'),
+            'edit' => EditLevel::route('/{record}/edit'),
+        ];
+    }
+}

app/Filament/Admin/Resources/Levels/Pages/CreateLevel.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels\Pages;
+
+use App\Filament\Admin\Resources\Levels\LevelResource;
+use Filament\Resources\Pages\CreateRecord;
+
+class CreateLevel extends CreateRecord
+{
+    protected static string $resource = LevelResource::class;
+}

app/Filament/Admin/Resources/Levels/Pages/EditLevel.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels\Pages;
+
+use App\Filament\Admin\Resources\Levels\LevelResource;
+use Filament\Actions\DeleteAction;
+use Filament\Resources\Pages\EditRecord;
+
+class EditLevel extends EditRecord
+{
+    protected static string $resource = LevelResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            DeleteAction::make(),
+        ];
+    }
+}

app/Filament/Admin/Resources/Levels/Pages/ListLevels.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels\Pages;
+
+use App\Filament\Admin\Resources\Levels\LevelResource;
+use Filament\Actions\CreateAction;
+use Filament\Resources\Pages\ListRecords;
+
+class ListLevels extends ListRecords
+{
+    protected static string $resource = LevelResource::class;
+
+    protected function getHeaderActions(): array
+    {
+        return [
+            CreateAction::make(),
+        ];
+    }
+}

app/Filament/Admin/Resources/Levels/Schemas/LevelForm.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels\Schemas;
+
+use Filament\Forms\Components\TextInput;
+use Filament\Forms\Components\Textarea;
+use Filament\Schemas\Schema;
+
+class LevelForm
+{
+    public static function configure(Schema $schema): Schema
+    {
+        return $schema
+            ->components([
+                TextInput::make('name')
+                    ->required(),
+                TextInput::make('code')
+                    ->required(),
+                Textarea::make('description')
+                    ->columnSpanFull(),
+                TextInput::make('order_index')
+                    ->required()
+                    ->numeric()
+                    ->default(0),
+            ]);
+    }
+}

app/Filament/Admin/Resources/Levels/Tables/LevelsTable.php

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+<?php
+
+namespace App\Filament\Admin\Resources\Levels\Tables;
+
+use Filament\Actions\BulkActionGroup;
+use Filament\Actions\DeleteBulkAction;
+use Filament\Actions\EditAction;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Table;
+
+class LevelsTable
+{
+    public static function configure(Table $table): Table
+    {
+        return $table
+            ->columns([
+                TextColumn::make('id')
+                    ->label('ID')
+                    ->searchable(),
+                TextColumn::make('name')
+                    ->searchable(),
+                TextColumn::make('code')
+                    ->searchable(),
+                TextColumn::make('order_index')
+                    ->numeric()
+                    ->sortable(),
+                TextColumn::make('created_at')
+                    ->dateTime()
+                    ->sortable()
+                    ->toggleable(isToggledHiddenByDefault: true),
+                TextColumn::make('updated_at')
+                    ->dateTime()
+                    ->sortable()
+                    ->toggleable(isToggledHiddenByDefault: true),
+            ])
+            ->filters([
+                //
+            ])
+            ->recordActions([
+                EditAction::make(),
+            ])
+            ->toolbarActions([
+                BulkActionGroup::make([
+                    DeleteBulkAction::make(),
+                ]),
+            ]);
+    }
+}