Stage 12 — Online Store: public catalog + cart + orders

Schema:
- online_orders (token-tracked, status workflow, delivery method/fee)
- online_order_items (price snapshot, fulfilled flag)
- part_cross_refs (OEM/equivalent codes for search)
- parts.is_published (shop visibility)

Storefront (ShopController, tenant subdomain, /shop):
- Catalog with search across name/article/brand/cross-refs, category +
  in-stock filters, live stock, white-label themed layout
- Part detail page with cross-ref codes
- VIN search → VinDecoder → guided catalog search
- Session cart (per-tenant key), guest checkout, order confirmation page
- Respects settings.shop.enabled (404 when off); tenant-guarded

Part::searchPublished matches cross-ref articles via whereHas.

Order notifications (ShopOrderNotifier, best-effort):
- Staff: Web Push to active users
- Customer: Telegram if phone matches a linked client

Filament (tenant):
- OnlineOrderResource under "Magazin" nav group, status workflow,
  items relation, "Onorează" action issues stock via WarehouseService (FIFO)
- PartResource: is_published toggle + column + bulk publish/unpublish +
  CrossRefsRelationManager
- Settings: shop section (enable, delivery methods, fee, free-over)
- Landing page: shop button when enabled

Tests (6 new):
- catalog 404 when disabled; lists published only; cross-ref search;
  order placement (token + items + total); fulfill issues stock;
  cross-tenant token isolation

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/Filament/Tenant/Resources/PartResource.php

@@ -80,6 +80,10 @@ class PartResource extends Resource
                     Forms\Components\TextInput::make('unit')->label('UM')->default('buc')->maxLength(16),
                     Forms\Components\TextInput::make('min_qty')->label('Minim')->numeric()->default(0),
                     Forms\Components\Toggle::make('is_active')->label('Activ')->default(true),
+                    Forms\Components\Toggle::make('is_published')
+                        ->label('Publicat în magazin')
+                        ->helperText('Apare în magazinul online public.')
+                        ->default(false),
                 ]),
             Schemas\Components\Section::make('Prețuri')
                 ->columns(2)
@@ -122,6 +126,7 @@ class PartResource extends Resource
                 Tables\Columns\TextColumn::make('unit')->label('UM'),
                 Tables\Columns\TextColumn::make('location')->label('Loc.')->placeholder('—'),
                 Tables\Columns\TextColumn::make('sell_price')->label('Preț vz.')->money('MDL')->alignRight(),
+                Tables\Columns\IconColumn::make('is_published')->label('Magazin')->boolean()->toggleable(),
                 Tables\Columns\TextColumn::make('preferredSupplier.name')->label('Furnizor')->placeholder('—')->toggleable(),
             ])
             ->filters([
@@ -216,6 +221,18 @@ class PartResource extends Resource
                         return redirect()->away('/parts/labels?ids=' . $ids);
                     })
                     ->deselectRecordsAfterCompletion(),
+                Actions\BulkAction::make('publish')
+                    ->label('Publică în magazin')
+                    ->icon('heroicon-m-globe-alt')
+                    ->color('success')
+                    ->action(fn ($records) => collect($records)->each->update(['is_published' => true]))
+                    ->deselectRecordsAfterCompletion(),
+                Actions\BulkAction::make('unpublish')
+                    ->label('Scoate din magazin')
+                    ->icon('heroicon-m-eye-slash')
+                    ->color('gray')
+                    ->action(fn ($records) => collect($records)->each->update(['is_published' => false]))
+                    ->deselectRecordsAfterCompletion(),
             ])
             ->emptyStateHeading('Depozit gol')
             ->emptyStateDescription('Adaugă piese manual, sau folosește Achiziții ca să le adaugi prin recepție de la furnizor (cu prețuri și stoc auto). Procentaj poate seta automat prețul de vânzare.')
@@ -228,6 +245,7 @@ class PartResource extends Resource
         return [
             RelationManagers\BatchesRelationManager::class,
             RelationManagers\PriceHistoryRelationManager::class,
+            RelationManagers\CrossRefsRelationManager::class,
         ];
     }