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>

app/Services/Notifications/ShopOrderNotifier.php

@@ -54,5 +54,17 @@ class ShopOrderNotifier
                 $this->telegram->sendMessage($company, (string) $client->telegram_chat_id, $text);
             }
         }
+
+        // ── Customer: email confirmation when address given ──
+        if ($order->customer_email) {
+            try {
+                \Illuminate\Support\Facades\Mail::to($order->customer_email)
+                    ->send(new \App\Mail\ShopOrderConfirmationMail($order, $company));
+            } catch (\Throwable $e) {
+                \Illuminate\Support\Facades\Log::warning('shop order confirmation mail failed', [
+                    'order' => $order->id, 'err' => $e->getMessage(),
+                ]);
+            }
+        }
     }
 }