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/Pages/Settings.php

@@ -55,6 +55,10 @@ class Settings extends Page
             'telegram_bot_token' => data_get($settings, 'telegram.bot_token'),
             'reminder_after_days' => data_get($settings, 'reminder.after_days', 365),
             'reminder_cooldown_days' => data_get($settings, 'reminder.cooldown_days', 30),
+            'shop_enabled' => data_get($settings, 'shop.enabled', false),
+            'shop_delivery_methods' => data_get($settings, 'shop.delivery_methods', ['pickup']),
+            'shop_delivery_fee' => data_get($settings, 'shop.delivery_fee', 0),
+            'shop_free_delivery_over' => data_get($settings, 'shop.free_delivery_over', 0),
             'ai_default_provider' => $settings['ai']['default_provider'] ?? 'claude',
             'ai_claude_key' => $settings['ai']['claude_key'] ?? null,
             'ai_gpt_key' => $settings['ai']['gpt_key'] ?? null,
@@ -167,6 +171,19 @@ class Settings extends Page
                             ->minValue(7)
                             ->default(30),
                     ]),
+                Schemas\Components\Section::make('Magazin online')
+                    ->description('Activează magazinul public la <slug>.service.mir.md/shop. Piesele apar doar dacă sunt marcate „Publicat".')
+                    ->columns(2)
+                    ->schema([
+                        Forms\Components\Toggle::make('shop_enabled')->label('Magazin activ')->columnSpanFull(),
+                        Forms\Components\CheckboxList::make('shop_delivery_methods')
+                            ->label('Metode de livrare')
+                            ->options(\App\Models\Tenant\OnlineOrder::DELIVERY)
+                            ->default(['pickup'])
+                            ->columnSpanFull(),
+                        Forms\Components\TextInput::make('shop_delivery_fee')->label('Taxă livrare')->numeric()->default(0),
+                        Forms\Components\TextInput::make('shop_free_delivery_over')->label('Livrare gratuită peste')->numeric()->default(0)->helperText('0 = dezactivat'),
+                    ]),
                 Schemas\Components\Section::make('Asistent AI')
                     ->description('Adaugă chei API ca să activezi asistentul. Cheile rămân la voi — nu sunt partajate.')
                     ->columns(2)
@@ -218,6 +235,12 @@ class Settings extends Page
                     'after_days' => (int) ($data['reminder_after_days'] ?? 365),
                     'cooldown_days' => (int) ($data['reminder_cooldown_days'] ?? 30),
                 ],
+                'shop' => [
+                    'enabled' => (bool) ($data['shop_enabled'] ?? false),
+                    'delivery_methods' => array_values((array) ($data['shop_delivery_methods'] ?? ['pickup'])),
+                    'delivery_fee' => (float) ($data['shop_delivery_fee'] ?? 0),
+                    'free_delivery_over' => (float) ($data['shop_free_delivery_over'] ?? 0),
+                ],
                 'ai' => [
                     'default_provider' => $data['ai_default_provider'] ?? 'claude',
                     'claude_key' => $data['ai_claude_key'] ?? null,