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>

database/migrations/2026_05_28_120000_create_online_store_tables.php

@@ -0,0 +1,86 @@
+<?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::create('online_orders', function (Blueprint $t) {
+            $t->id();
+            $t->foreignId('company_id')->constrained()->cascadeOnDelete();
+            $t->string('number', 32);
+            $t->string('tracking_token', 32);
+            $t->foreignId('client_id')->nullable()->constrained()->nullOnDelete();
+
+            $t->string('customer_name');
+            $t->string('customer_phone', 40);
+            $t->string('customer_email')->nullable();
+
+            $t->string('delivery_method', 32)->default('pickup'); // pickup / courier / post
+            $t->string('address')->nullable();
+
+            $t->string('status', 24)->default('new');
+            // new / confirmed / packed / shipped / delivered / cancelled
+
+            $t->decimal('subtotal', 12, 2)->default(0);
+            $t->decimal('delivery_fee', 10, 2)->default(0);
+            $t->decimal('total', 12, 2)->default(0);
+            $t->text('notes')->nullable();
+
+            $t->timestamps();
+            $t->softDeletes();
+
+            $t->unique(['company_id', 'number']);
+            $t->unique('tracking_token', 'online_orders_token_unique');
+            $t->index(['company_id', 'status']);
+        });
+
+        Schema::create('online_order_items', function (Blueprint $t) {
+            $t->id();
+            $t->foreignId('company_id')->constrained()->cascadeOnDelete();
+            $t->foreignId('online_order_id')->constrained()->cascadeOnDelete();
+            $t->foreignId('part_id')->nullable()->constrained()->nullOnDelete();
+
+            $t->string('name');
+            $t->string('article', 64)->nullable();
+            $t->decimal('qty', 10, 2)->default(1);
+            $t->decimal('price', 12, 2)->default(0);   // snapshot of sell_price
+            $t->decimal('total', 12, 2)->default(0);
+            $t->boolean('fulfilled')->default(false);
+
+            $t->timestamps();
+            $t->index(['company_id', 'online_order_id']);
+        });
+
+        Schema::create('part_cross_refs', function (Blueprint $t) {
+            $t->id();
+            $t->foreignId('company_id')->constrained()->cascadeOnDelete();
+            $t->foreignId('part_id')->constrained()->cascadeOnDelete();
+            $t->string('cross_article', 64);
+            $t->string('brand', 64)->nullable();
+            $t->timestamps();
+
+            $t->index(['company_id', 'cross_article']);
+            $t->index(['company_id', 'part_id']);
+        });
+
+        Schema::table('parts', function (Blueprint $t) {
+            $t->boolean('is_published')->default(false)->after('is_active');
+            $t->index(['company_id', 'is_published']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('parts', function (Blueprint $t) {
+            $t->dropIndex(['company_id', 'is_published']);
+            $t->dropColumn('is_published');
+        });
+        Schema::dropIfExists('part_cross_refs');
+        Schema::dropIfExists('online_order_items');
+        Schema::dropIfExists('online_orders');
+    }
+};