first commit

app/Filament/Resources/Categories/CategoryResource.php

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+<?php
+
+namespace App\Filament\Resources\Categories;
+
+use App\Filament\Resources\Categories\Pages\CreateCategory;
+use App\Filament\Resources\Categories\Pages\EditCategory;
+use App\Filament\Resources\Categories\Pages\ListCategories;
+use App\Filament\Resources\Categories\Schemas\CategoryForm;
+use App\Filament\Resources\Categories\Tables\CategoriesTable;
+use App\Models\Category;
+use BackedEnum;
+use Filament\Resources\Resource;
+use Filament\Schemas\Schema;
+use Filament\Support\Icons\Heroicon;
+use Filament\Tables\Table;
+
+class CategoryResource extends Resource
+{
+    protected static ?string $model = Category::class;
+
+    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedRectangleStack;
+
+    protected static string|\UnitEnum|null $navigationGroup = 'Blog';
+
+    public static function form(Schema $schema): Schema
+    {
+        return CategoryForm::configure($schema);
+    }
+
+    public static function table(Table $table): Table
+    {
+        return CategoriesTable::configure($table);
+    }
+
+    public static function getRelations(): array
+    {
+        return [
+            //
+        ];
+    }
+
+    public static function getPages(): array
+    {
+        return [
+            'index' => ListCategories::route('/'),
+            'create' => CreateCategory::route('/create'),
+            'edit' => EditCategory::route('/{record}/edit'),
+        ];
+    }
+}

app/Filament/Resources/Categories/Pages/CreateCategory.php

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+<?php
+
+namespace App\Filament\Resources\Categories\Pages;
+
+use App\Filament\Resources\Categories\CategoryResource;
+use Filament\Resources\Pages\CreateRecord;
+
+class CreateCategory extends CreateRecord
+{
+    protected static string $resource = CategoryResource::class;
+}

app/Filament/Resources/Categories/Pages/EditCategory.php

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

app/Filament/Resources/Categories/Pages/ListCategories.php

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

app/Filament/Resources/Categories/Schemas/CategoryForm.php

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+<?php
+
+namespace App\Filament\Resources\Categories\Schemas;
+
+use App\Models\Category;
+use Filament\Forms\Components\Select;
+use Filament\Forms\Components\Textarea;
+use Filament\Forms\Components\TextInput;
+use Filament\Schemas\Components\Section;
+use Filament\Schemas\Schema;
+use Illuminate\Support\Str;
+
+class CategoryForm
+{
+    public static function configure(Schema $schema): Schema
+    {
+        return $schema
+            ->components([
+                Section::make('Category')
+                    ->columns(2)
+                    ->components([
+                        Select::make('parent_id')
+                            ->label('Parent category')
+                            ->relationship(
+                                'parent',
+                                'name',
+                                fn ($query, $record) => $record ? $query->whereKeyNot($record->id) : $query,
+                            )
+                            ->searchable()
+                            ->preload()
+                            ->helperText('Leave empty for a top-level category.'),
+                        TextInput::make('name')
+                            ->required()
+                            ->live(onBlur: true)
+                            ->afterStateUpdated(function (string $operation, $state, callable $set) {
+                                if ($operation === 'create') {
+                                    $set('slug', Str::slug($state));
+                                }
+                            }),
+                        TextInput::make('slug')
+                            ->required()
+                            ->unique(Category::class, 'slug', ignoreRecord: true)
+                            ->helperText('Used in the URL, e.g. /category/your-slug'),
+                        Textarea::make('description')
+                            ->columnSpanFull(),
+                    ]),
+                Section::make('SEO')
+                    ->description('Optional overrides for search engines and social sharing.')
+                    ->collapsible()
+                    ->components([
+                        TextInput::make('meta_title')
+                            ->maxLength(60)
+                            ->helperText('Falls back to the category name if left blank.'),
+                        TextInput::make('meta_description')
+                            ->maxLength(160)
+                            ->helperText('Falls back to the description if left blank.'),
+                    ]),
+            ]);
+    }
+}

app/Filament/Resources/Categories/Tables/CategoriesTable.php

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+<?php
+
+namespace App\Filament\Resources\Categories\Tables;
+
+use Filament\Actions\BulkActionGroup;
+use Filament\Actions\DeleteBulkAction;
+use Filament\Actions\EditAction;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Table;
+
+class CategoriesTable
+{
+    public static function configure(Table $table): Table
+    {
+        return $table
+            ->columns([
+                TextColumn::make('name')
+                    ->searchable()
+                    ->weight('medium'),
+                TextColumn::make('parent.name')
+                    ->label('Parent')
+                    ->placeholder('—')
+                    ->searchable(),
+                TextColumn::make('slug')
+                    ->searchable(),
+                TextColumn::make('posts_count')
+                    ->label('Posts')
+                    ->counts('posts')
+                    ->sortable(),
+                TextColumn::make('created_at')
+                    ->dateTime()
+                    ->sortable()
+                    ->toggleable(isToggledHiddenByDefault: true),
+                TextColumn::make('updated_at')
+                    ->dateTime()
+                    ->sortable()
+                    ->toggleable(isToggledHiddenByDefault: true),
+            ])
+            ->defaultSort('name')
+            ->filters([
+                //
+            ])
+            ->recordActions([
+                EditAction::make(),
+            ])
+            ->toolbarActions([
+                BulkActionGroup::make([
+                    DeleteBulkAction::make(),
+                ]),
+            ]);
+    }
+}