feat: shop UX polish — password reset / order email / multi-image / customer admin

Shop password reset:
- Configured 'shop_customers' password broker on the existing
  password_reset_tokens table
- ShopCustomer::sendPasswordResetNotification overrides Laravel default to
  send a ShopPasswordResetMail with a tenant-subdomain reset URL
- Routes /shop/password/forgot, /shop/password/email, /shop/password/reset/{token}
  + ShopAuthController showForgotPassword/sendResetLink/showResetPassword/
  resetPassword. Forgot view stays generic ("if it exists, we sent…") to avoid
  email enumeration. Login view links to "Am uitat parola".

Order confirmation email:
- ShopOrderConfirmationMail + nicely formatted HTML email template
- ShopOrderNotifier::placed now also emails customer_email (best-effort,
  warning-only logged on failure) alongside existing Telegram + staff push

Multiple images per Part:
- Part media collection switched from singleFile to multiple (max 8 in form)
- imageUrls() helper for galleries; imageUrl() still returns first for cards
- PartResource form: reorderable multi-upload
- Shop part detail: vertical thumbnails switch the main image via vanilla JS

ShopCustomerResource (tenant Filament, "Magazin" nav group):
- List with name/phone/email/client_id/orders_count/last_login_at
- Edit (no password field exposed)
- "Trimite reset parolă" action uses the new broker
- OrdersRelationManager shows the customer's orders read-only

Tests (7 new):
- forgot sends mail; forgot doesn't disclose unknown email; reset with valid
  token changes password; bad token rejected; order email when customer_email
  set; email skipped without it; Part has imageUrls() collection

Full suite: 130 passed.

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

resources/views/shop/part.blade.php

@@ -1,14 +1,41 @@
 @extends('shop.layout')
 @section('title', $part->name)
 @section('content')
-@php $currency = $tenant->settings['currency'] ?? 'MDL'; $stock = (float) $part->qty; $img = $part->imageUrl(); @endphp
+@php
+    $currency = $tenant->settings['currency'] ?? 'MDL';
+    $stock = (float) $part->qty;
+    $imgs = $part->imageUrls();
+@endphp
 
 <a href="/shop" class="muted">← Înapoi la catalog</a>
 
-@if ($img)
-    <div class="card" style="margin-top:12px;display:grid;grid-template-columns:260px 1fr;gap:20px;align-items:start;">
-        <div style="border-radius:10px;overflow:hidden;aspect-ratio:1;background:#f9fafb;border:1px solid #e5e7eb;">
-            <img src="{{ $img }}" alt="{{ $part->name }}" style="width:100%;height:100%;object-fit:cover;display:block;">
+@if (! empty($imgs))
+    <div class="card" style="margin-top:12px;display:grid;grid-template-columns:280px 1fr;gap:20px;align-items:start;">
+        <div>
+            <div style="border-radius:10px;overflow:hidden;aspect-ratio:1;background:#f9fafb;border:1px solid #e5e7eb;">
+                <img id="gallery-main" src="{{ $imgs[0] }}" alt="{{ $part->name }}" style="width:100%;height:100%;object-fit:cover;display:block;">
+            </div>
+            @if (count($imgs) > 1)
+                <div style="display:flex;gap:6px;margin-top:8px;flex-wrap:wrap;">
+                    @foreach ($imgs as $i => $url)
+                        <button type="button" data-gallery-src="{{ $url }}" data-gallery-index="{{ $i }}"
+                                class="gallery-thumb {{ $i === 0 ? 'thumb-active' : '' }}"
+                                style="width:54px;height:54px;border-radius:6px;overflow:hidden;padding:0;cursor:pointer;background:#f9fafb;border:1px solid #e5e7eb;">
+                            <img src="{{ $url }}" style="width:100%;height:100%;object-fit:cover;display:block;">
+                        </button>
+                    @endforeach
+                </div>
+                <style>.thumb-active { border: 2px solid #3b82f6 !important; }</style>
+                <script>
+                    document.querySelectorAll('.gallery-thumb').forEach(btn => {
+                        btn.addEventListener('click', () => {
+                            document.getElementById('gallery-main').src = btn.dataset.gallerySrc;
+                            document.querySelectorAll('.gallery-thumb').forEach(b => b.classList.remove('thumb-active'));
+                            btn.classList.add('thumb-active');
+                        });
+                    });
+                </script>
+            @endif
         </div>
         <div>
 @else