diff --git a/app/Filament/User/Resources/BatchResource.php b/app/Filament/User/Resources/BatchResource.php
deleted file mode 100644
index 150c2ac..0000000
--- a/app/Filament/User/Resources/BatchResource.php
+++ /dev/null
@@ -1,256 +0,0 @@
-<?php
-
-namespace App\Filament\User\Resources;
-
-use App\Filament\User\Resources\BatchResource\Pages;
-use App\Models\Batch;
-use App\Models\Farmer;
-use App\Models\Product;
-use App\Models\ProductSize;
-use App\Models\Recipe;
-use App\Models\Spice;
-use Filament\Forms;
-use Filament\Forms\Form;
-use Filament\Forms\Get;
-use Filament\Resources\Resource;
-use Illuminate\Support\HtmlString;
-use Filament\Tables;
-use Filament\Tables\Table;
-
-class BatchResource extends Resource
-{
-    protected static ?string $model = Batch::class;
-    protected static ?string $navigationIcon = 'heroicon-o-qr-code';
-    protected static ?string $navigationLabel = 'Chargen (LOT)';
-    protected static ?string $modelLabel = 'Charge';
-    protected static ?string $pluralModelLabel = 'Chargen';
-    protected static ?string $navigationGroup = 'Produkte';
-    protected static ?int $navigationSort = 3;
-
-    public static function form(Form $form): Form
-    {
-        return $form->schema([
-            Forms\Components\Section::make('Charge')->schema([
-                Forms\Components\Select::make('product_id')
-                    ->label('Produkt')
-                    ->relationship('product', 'title')
-                    ->searchable()
-                    ->preload()
-                    ->required()
-                    ->live()
-                    ->afterStateUpdated(function ($state, $set, $get) {
-                        $set('size_id', null);
-                        $set('recipe_id', null);
-                        $set('origins', []);
-                        if (! $state) {
-                            return;
-                        }
-                        $product = Product::find($state);
-                        if ($product?->recipes_id) {
-                            $set('recipe_id', $product->recipes_id);
-                            $recipe = Recipe::with('spices')->find($product->recipes_id);
-                            if ($recipe) {
-                                $set('origins', $recipe->spices->map(fn ($s) => [
-                                    'spice_id' => $s->id,
-                                    'entries'  => [['supplier_id' => null, 'origin_country' => null, 'farmer_id' => null, 'notes' => null]],
-                                ])->toArray());
-                            }
-                        }
-                        $suffix = $get('lot_suffix');
-                        if ($suffix && $product?->lot_prefix) {
-                            $set('lot_number', $product->lot_prefix . '-' . $suffix);
-                        }
-                    }),
-
-                Forms\Components\TextInput::make('lot_suffix')
-                    ->label('LOT-Nummer')
-                    ->prefix(fn (Get $get): ?string => Product::find($get('product_id'))?->lot_prefix
-                        ? Product::find($get('product_id'))->lot_prefix . ' -'
-                        : null
-                    )
-                    ->placeholder('JJMMTT')
-                    ->maxLength(50)
-                    ->required()
-                    ->dehydrated(false)
-                    ->live(onBlur: true)
-                    ->afterStateHydrated(function ($component, $record) {
-                        if (! $record?->lot_number) return;
-                        $pos = strrpos($record->lot_number, '-');
-                        $component->state($pos !== false
-                            ? substr($record->lot_number, $pos + 1)
-                            : $record->lot_number
-                        );
-                    })
-                    ->afterStateUpdated(function ($state, $set, $get) {
-                        $product = Product::find($get('product_id'));
-                        $set('lot_number', $product?->lot_prefix
-                            ? $product->lot_prefix . '-' . $state
-                            : $state
-                        );
-                    }),
-
-                Forms\Components\Hidden::make('lot_number'),
-
-                Forms\Components\Select::make('size_id')
-                    ->label('Variante (Verpackung)')
-                    ->options(fn (Get $get) => ProductSize::with('packing')
-                        ->where('product_id', $get('product_id'))
-                        ->get()
-                        ->mapWithKeys(fn ($s) => [$s->id => $s->packing->name . ' ' . $s->packing->size . 'g'])
-                    )
-                    ->required()
-                    ->live(),
-
-                Forms\Components\Select::make('recipe_id')
-                    ->label('Rezeptur')
-                    ->options(fn (Get $get) => Recipe::where('product_id', $get('product_id') ?? 0)
-                        ->orderByDesc('version')
-                        ->get()
-                        ->mapWithKeys(fn ($r) => [$r->id => 'v' . $r->version . ' · ' . $r->created_at->format('d.m.Y')])
-                    )
-                    ->required()
-                    ->live()
-                    ->afterStateUpdated(function ($state, $set, $get) {
-                        if (! $state) {
-                            $set('origins', []);
-                            return;
-                        }
-                        $recipe = Recipe::with('spices')->find($state);
-                        if ($recipe) {
-                            $existing = collect($get('origins') ?? [])->keyBy('spice_id');
-                            $set('origins', $recipe->spices->map(fn ($s) => $existing->has($s->id)
-                                ? $existing[$s->id]
-                                : ['spice_id' => $s->id, 'entries' => [['supplier_id' => null, 'origin_country' => null, 'farmer_id' => null, 'notes' => null]]]
-                            )->toArray());
-                        }
-                    }),
-
-                Forms\Components\TextInput::make('units_produced')
-                    ->label('Anzahl Einheiten')
-                    ->numeric()
-                    ->required()
-                    ->live(debounce: 400),
-
-                Forms\Components\Placeholder::make('quantity_g_preview')
-                    ->label('Gesamtgewicht (berechnet)')
-                    ->content(function (Get $get): HtmlString {
-                        $units = (int) $get('units_produced');
-                        $sizeId = $get('size_id');
-                        if (! $units || ! $sizeId) {
-                            return new HtmlString('<span class="text-gray-400">—</span>');
-                        }
-                        $size = ProductSize::with('packing')->find($sizeId);
-                        $totalG = $units * ($size?->packing?->size ?? 0);
-                        return new HtmlString("<strong>{$totalG} g</strong> ({$units} × {$size?->packing?->size}g)");
-                    }),
-
-                Forms\Components\DatePicker::make('produced_at')
-                    ->label('Produktionsdatum'),
-
-                Forms\Components\DatePicker::make('expires_at')
-                    ->label('Mindesthaltbarkeitsdatum'),
-            ])->columns(2),
-
-            Forms\Components\Section::make('Herkunft der Rohstoffe')->schema([
-                Forms\Components\Repeater::make('origins')
-                    ->label('')
-                    ->relationship()
-                    ->schema([
-                        Forms\Components\Hidden::make('spice_id'),
-                        Forms\Components\Placeholder::make('spice_name')
-                            ->label('Rohstoff')
-                            ->content(fn (Get $get): string =>
-                                Spice::find($get('spice_id'))?->name ?? '—'
-                            )
-                            ->columnSpanFull(),
-
-                        Forms\Components\Repeater::make('entries')
-                            ->label('Herkunftsangaben')
-                            ->relationship()
-                            ->schema([
-                                Forms\Components\Select::make('supplier_id')
-                                    ->label('Lieferant')
-                                    ->options(fn () => \App\Models\Supplier::orderBy('name')->pluck('name', 'id'))
-                                    ->searchable()
-                                    ->createOptionForm([
-                                        Forms\Components\TextInput::make('name')->label('Name')->required(),
-                                    ])
-                                    ->createOptionUsing(fn ($data) => \App\Models\Supplier::create($data)->id)
-                                    ->nullable(),
-
-                                Forms\Components\TextInput::make('origin_country')
-                                    ->label('Herkunftsland')
-                                    ->maxLength(100),
-
-                                Forms\Components\Select::make('farmer_id')
-                                    ->label('Landwirt')
-                                    ->options(fn () => Farmer::orderBy('name')->pluck('name', 'id'))
-                                    ->searchable()
-                                    ->createOptionForm([
-                                        Forms\Components\TextInput::make('name')->label('Name')->required(),
-                                    ])
-                                    ->createOptionUsing(fn ($data) => Farmer::create($data)->id)
-                                    ->nullable(),
-
-                                Forms\Components\Textarea::make('notes')
-                                    ->label('Notizen')
-                                    ->rows(2)
-                                    ->columnSpanFull(),
-                            ])
-                            ->columns(3)
-                            ->addActionLabel('Eintrag hinzufügen')
-                            ->reorderable(false)
-                            ->columnSpanFull(),
-                    ])
-                    ->reorderable(false),
-            ]),
-        ]);
-    }
-
-    public static function table(Table $table): Table
-    {
-        return $table
-            ->columns([
-                Tables\Columns\TextColumn::make('lot_number')
-                    ->label('LOT-Nummer')
-                    ->searchable()
-                    ->sortable(),
-
-                Tables\Columns\TextColumn::make('product.title')
-                    ->label('Produkt')
-                    ->searchable(),
-
-                Tables\Columns\TextColumn::make('recipe.name')
-                    ->label('Rezeptur'),
-
-                Tables\Columns\TextColumn::make('produced_at')
-                    ->label('Produktion')
-                    ->date('d.m.Y')
-                    ->sortable(),
-
-                Tables\Columns\TextColumn::make('expires_at')
-                    ->label('MHD')
-                    ->date('d.m.Y')
-                    ->sortable(),
-            ])
-            ->defaultSort('produced_at', 'desc')
-            ->filters([
-                Tables\Filters\SelectFilter::make('product')
-                    ->relationship('product', 'title')
-                    ->label('Produkt'),
-            ])
-            ->actions([
-                Tables\Actions\EditAction::make(),
-                Tables\Actions\DeleteAction::make(),
-            ]);
-    }
-
-    public static function getPages(): array
-    {
-        return [
-            'index'  => Pages\ListBatches::route('/'),
-            'create' => Pages\CreateBatch::route('/create'),
-            'edit'   => Pages\EditBatch::route('/{record}/edit'),
-        ];
-    }
-}
diff --git a/app/Filament/User/Resources/BatchResource/Pages/CreateBatch.php b/app/Filament/User/Resources/BatchResource/Pages/CreateBatch.php
deleted file mode 100644
index d3866ee..0000000
--- a/app/Filament/User/Resources/BatchResource/Pages/CreateBatch.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php
-
-namespace App\Filament\User\Resources\BatchResource\Pages;
-
-use App\Filament\User\Resources\BatchResource;
-use Filament\Resources\Pages\CreateRecord;
-
-class CreateBatch extends CreateRecord
-{
-    protected static string $resource = BatchResource::class;
-}
diff --git a/app/Filament/User/Resources/BatchResource/Pages/EditBatch.php b/app/Filament/User/Resources/BatchResource/Pages/EditBatch.php
deleted file mode 100644
index 2b1d42c..0000000
--- a/app/Filament/User/Resources/BatchResource/Pages/EditBatch.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-
-namespace App\Filament\User\Resources\BatchResource\Pages;
-
-use App\Filament\User\Resources\BatchResource;
-use Filament\Actions;
-use Filament\Resources\Pages\EditRecord;
-
-class EditBatch extends EditRecord
-{
-    protected static string $resource = BatchResource::class;
-
-    protected function getHeaderActions(): array
-    {
-        return [Actions\DeleteAction::make()];
-    }
-}
diff --git a/app/Filament/User/Resources/BatchResource/Pages/ListBatches.php b/app/Filament/User/Resources/BatchResource/Pages/ListBatches.php
deleted file mode 100644
index 8ee8c38..0000000
--- a/app/Filament/User/Resources/BatchResource/Pages/ListBatches.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-
-namespace App\Filament\User\Resources\BatchResource\Pages;
-
-use App\Filament\User\Resources\BatchResource;
-use Filament\Actions;
-use Filament\Resources\Pages\ListRecords;
-
-class ListBatches extends ListRecords
-{
-    protected static string $resource = BatchResource::class;
-
-    protected function getHeaderActions(): array
-    {
-        return [Actions\CreateAction::make()];
-    }
-}
diff --git a/database/migrations/2026_09_12_230000_add_article_number_to_products.php b/database/migrations/2026_09_12_230000_add_article_number_to_products.php
new file mode 100644
index 0000000..612808c
--- /dev/null
+++ b/database/migrations/2026_09_12_230000_add_article_number_to_products.php
@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->string('article_number')->nullable()->unique()->after('title');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->dropColumn('article_number');
+        });
+    }
+};