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>

resources/views/shop/checkout.blade.php

@@ -0,0 +1,71 @@
+@extends('shop.layout')
+@section('title', 'Finalizare comandă')
+@section('content')
+@php
+    $currency = $tenant->settings['currency'] ?? 'MDL';
+    $labels = \App\Models\Tenant\OnlineOrder::DELIVERY;
+@endphp
+
+<h1 style="font-size:22px;margin-bottom:16px;">Finalizează comanda</h1>
+
+@if ($errors->any())
+    <div class="card" style="border-color:#fca5a5;background:#fef2f2;margin-bottom:14px;">
+        <ul style="margin:0;padding-left:18px;color:#991b1b;font-size:14px;">
+            @foreach ($errors->all() as $e)<li>{{ $e }}</li>@endforeach
+        </ul>
+    </div>
+@endif
+
+<div style="display:grid;grid-template-columns:1fr 320px;gap:18px;align-items:start;">
+    <form method="POST" action="/shop/checkout" class="card">
+        @csrf
+        <div class="field">
+            <label>Nume complet *</label>
+            <input type="text" name="customer_name" value="{{ old('customer_name') }}" required>
+        </div>
+        <div class="field">
+            <label>Telefon *</label>
+            <input type="text" name="customer_phone" value="{{ old('customer_phone') }}" required placeholder="+373…">
+        </div>
+        <div class="field">
+            <label>Email</label>
+            <input type="email" name="customer_email" value="{{ old('customer_email') }}">
+        </div>
+        <div class="field">
+            <label>Livrare *</label>
+            <select name="delivery_method" required>
+                @foreach ($deliveryOptions as $opt)
+                    <option value="{{ $opt }}">{{ $labels[$opt] ?? $opt }}</option>
+                @endforeach
+            </select>
+        </div>
+        <div class="field">
+            <label>Adresă (pentru curier/poștă)</label>
+            <input type="text" name="address" value="{{ old('address') }}">
+        </div>
+        <div class="field">
+            <label>Observații</label>
+            <textarea name="notes" rows="2">{{ old('notes') }}</textarea>
+        </div>
+        <button class="btn block" type="submit">Plasează comanda</button>
+    </form>
+
+    <div class="card">
+        <h3 style="font-size:15px;margin-bottom:10px;">Sumar</h3>
+        <table class="cart">
+            @foreach ($cart as $item)
+                <tr>
+                    <td>{{ $item['name'] }} <span class="muted">×{{ $item['qty'] }}</span></td>
+                    <td class="r">{{ number_format($item['price'] * $item['qty'], 2) }}</td>
+                </tr>
+            @endforeach
+        </table>
+        <div style="margin-top:12px;font-size:18px;font-weight:700;text-align:right;">
+            {{ number_format($subtotal, 2) }} {{ $currency }}
+        </div>
+        <p class="muted" style="margin-top:6px;">Taxa de livrare se calculează în funcție de metoda aleasă.</p>
+    </div>
+</div>
+
+<style>@media (max-width:720px){ .wrap div[style*="grid-template-columns:1fr 320px"]{ grid-template-columns:1fr !important; } }</style>
+@endsection