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/Filament/Tenant/Resources/ShopCustomerResource/RelationManagers/OrdersRelationManager.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Filament\Tenant\Resources\ShopCustomerResource\RelationManagers;
+
+use App\Models\Tenant\OnlineOrder;
+use Filament\Resources\RelationManagers\RelationManager;
+use Filament\Tables;
+use Filament\Tables\Table;
+
+class OrdersRelationManager extends RelationManager
+{
+    protected static string $relationship = 'orders';
+
+    protected static ?string $title = 'Comenzi';
+
+    public function table(Table $table): Table
+    {
+        return $table
+            ->recordTitleAttribute('number')
+            ->columns([
+                Tables\Columns\TextColumn::make('number')->label('Nr.'),
+                Tables\Columns\TextColumn::make('created_at')->label('Data')->dateTime('d.m.Y H:i'),
+                Tables\Columns\TextColumn::make('status')
+                    ->formatStateUsing(fn ($s) => OnlineOrder::STATUSES[$s] ?? $s)
+                    ->badge()
+                    ->colors([
+                        'warning' => ['new'],
+                        'info' => ['confirmed', 'packed'],
+                        'primary' => ['shipped'],
+                        'success' => ['delivered'],
+                        'danger' => ['cancelled'],
+                    ]),
+                Tables\Columns\TextColumn::make('total')->money('MDL')->alignRight(),
+            ])
+            ->defaultSort('created_at', 'desc')
+            ->emptyStateHeading('Nicio comandă încă');
+    }
+}