Fix POS to sell products (not programs) + fix product visibility

- POS Terminal now shows products tab with addProduct() method
  (programs are enrolled via receptionist desk, not POS)
- Product list and POS show branch products + academy-wide (null branch)
- CreateProductWizard and ProductForm now set branch_id on create
- Product model gets ManglesUniqueOnDelete for SKU collision prevention
- Clicking a product in POS adds it to cart (or increments qty if exists)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Domain/Inventory/Models/Product.php

@@ -6,6 +6,7 @@
 use App\Domain\Shared\Traits\Auditable;
 use App\Domain\Shared\Traits\BelongsToAcademy;
 use App\Domain\Shared\Traits\HasUuid;
+use App\Domain\Shared\Traits\ManglesUniqueOnDelete;
 use App\Models\User;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
@@ -15,7 +16,9 @@
 
 class Product extends Model
 {
-    use BelongsToAcademy, HasUuid, SoftDeletes, Auditable;
+    use BelongsToAcademy, HasUuid, SoftDeletes, Auditable, ManglesUniqueOnDelete;
+
+    protected array $uniqueFieldsToMangle = ['sku'];
 
     protected $fillable = [
         'academy_id',

app/Livewire/Inventory/CreateProductWizard.php

@@ -130,6 +130,7 @@ public function confirm(): void
                 'sku' => $this->sku ?: null,
                 'barcode' => $this->barcode ?: null,
                 'category_id' => $this->categoryId,
+                'branch_id' => session('active_branch_id'),
                 'type' => $this->type,
                 'description_ar' => $this->descriptionAr ?: null,
                 'selling_price' => (int) round((float) $this->sellingPrice * 100),

app/Livewire/Inventory/ProductForm.php

@@ -132,6 +132,7 @@ public function save(): void
                 session()->flash('success', __('تم تحديث المنتج بنجاح'));
             } else {
                 $data['created_by'] = auth()->id();
+                $data['branch_id'] = session('active_branch_id');
                 Product::create($data);
                 session()->flash('success', __('تم إنشاء المنتج بنجاح'));
             }

app/Livewire/Inventory/ProductList.php

@@ -53,7 +53,9 @@ public function render()
 
         $query = Product::query()
             ->with(['category', 'inventoryLevels'])
-            ->when($branchId, fn ($q) => $q->where('branch_id', $branchId))
+            ->when($branchId, fn ($q) => $q->where(function ($sub) use ($branchId) {
+                $sub->where('branch_id', $branchId)->orWhereNull('branch_id');
+            }))
             ->when($this->search, function ($q) {
                 $search = $this->search;
                 $q->where(function ($q2) use ($search) {

app/Livewire/POS/POSTerminal.php

@@ -3,6 +3,7 @@
 namespace App\Livewire\POS;
 
 use App\Domain\Financial\Services\CashSessionService;
+use App\Domain\Inventory\Models\Product;
 use App\Domain\Participant\Models\Participant;
 use App\Domain\POS\Enums\POSItemType;
 use App\Domain\POS\Enums\POSPaymentMethod;
@@ -118,6 +119,33 @@ public function addProgram(int $programId, PricingService $pricingService): void
         }
     }
 
+    public function addProduct(int $productId): void
+    {
+        $product = Product::findOrFail($productId);
+
+        $existingIndex = collect($this->cart)->search(fn ($item) => $item['item_type'] === POSItemType::Product->value && $item['item_id'] === $product->id);
+
+        if ($existingIndex !== false) {
+            $this->updateQuantity($existingIndex, $this->cart[$existingIndex]['quantity'] + 1);
+            return;
+        }
+
+        $unitPrice = $product->selling_price;
+
+        $this->cart[] = [
+            'item_type' => POSItemType::Product->value,
+            'item_id' => $product->id,
+            'item_name_ar' => $product->name_ar,
+            'quantity' => 1,
+            'unit_price' => $unitPrice,
+            'base_price' => $unitPrice,
+            'discount_amount' => 0,
+            'line_total' => $unitPrice,
+            'pricing_snapshot' => [],
+            'metadata' => ['product_id' => $product->id, 'sku' => $product->sku],
+        ];
+    }
+
     public function addManualItem(): void
     {
         if (empty($this->manualItemName) || $this->manualItemPrice <= 0) {
@@ -306,10 +334,17 @@ public function newTransaction(): void
 
     public function render()
     {
-        $programs = TrainingProgram::where('status', 'active')->orderBy('name_ar')->get();
+        $branchId = auth()->user()->branch_id ?? null;
+
+        $products = Product::where('is_active', true)
+            ->when($branchId, fn ($q) => $q->where(function ($sub) use ($branchId) {
+                $sub->where('branch_id', $branchId)->orWhereNull('branch_id');
+            }))
+            ->orderBy('name_ar')
+            ->get();
 
         return view('livewire.pos.pos-terminal', [
-            'programs' => $programs,
+            'products' => $products,
             'cartTotal' => $this->getCartTotal(),
             'cartDiscount' => $this->getCartDiscount(),
             'cartSubtotal' => $this->getCartSubtotal(),

resources/views/livewire/pos/pos-terminal.blade.php

 <div x-data="{
-    activeTab: 'programs',
+    activeTab: 'products',
     showParticipantResults: false,
     mobileCartOpen: false,
 }" class="min-h-[calc(100vh-4rem)]">
@@ -82,10 +82,10 @@ class="w-full text-start px-3 sm:px-4 py-2.5 min-h-[44px] hover:bg-gray-50 activ
             {{-- Tabs --}}
             <div class="bg-white rounded-xl shadow-sm border border-gray-200 overflow-hidden">
                 <div class="flex border-b border-gray-200">
-                    <button @click="activeTab = 'programs'"
-                            :class="activeTab === 'programs' ? 'border-b-2 border-blue-600 text-blue-700 bg-blue-50/50' : 'text-gray-500 hover:text-gray-700'"
+                    <button @click="activeTab = 'products'"
+                            :class="activeTab === 'products' ? 'border-b-2 border-blue-600 text-blue-700 bg-blue-50/50' : 'text-gray-500 hover:text-gray-700'"
                             class="flex-1 px-3 sm:px-4 py-3 min-h-[44px] text-xs sm:text-sm font-medium transition-colors">
-                        {{ __('البرامج') }}
+                        {{ __('المنتجات') }}
                     </button>
                     <button @click="activeTab = 'manual'"
                             :class="activeTab === 'manual' ? 'border-b-2 border-blue-600 text-blue-700 bg-blue-50/50' : 'text-gray-500 hover:text-gray-700'"
@@ -94,31 +94,31 @@ class="flex-1 px-3 sm:px-4 py-3 min-h-[44px] text-xs sm:text-sm font-medium tran
                     </button>
                 </div>
 
-                {{-- Programs Tab --}}
-                <div x-show="activeTab === 'programs'" class="p-3 sm:p-4">
-                    @if($programs->isEmpty())
+                {{-- Products Tab --}}
+                <div x-show="activeTab === 'products'" class="p-3 sm:p-4">
+                    @if($products->isEmpty())
                         <div class="text-center py-6 sm:py-8">
                             <svg class="w-10 h-10 sm:w-12 sm:h-12 text-gray-300 mx-auto mb-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"/>
+                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4"/>
                             </svg>
-                            <p class="text-gray-500 text-xs sm:text-sm">{{ __('لا توجد برامج متاحة') }}</p>
+                            <p class="text-gray-500 text-xs sm:text-sm">{{ __('لا توجد منتجات متاحة') }}</p>
                         </div>
                     @else
-                        <div class="grid grid-cols-2 sm:grid-cols-2 lg:grid-cols-2 gap-2 sm:gap-3" wire:loading.class="opacity-50 pointer-events-none" wire:target="addProgram">
-                            @foreach($programs as $program)
-                                <button wire:click="addProgram({{ $program->id }})"
-                                        class="flex items-center gap-2 sm:gap-3 p-2.5 sm:p-3 min-h-[44px] border border-gray-200 rounded-lg hover:border-blue-300 hover:bg-blue-50/50 active:bg-blue-100 active:scale-[0.97] transition-all text-start group">
-                                    <div class="w-8 h-8 sm:w-10 sm:h-10 rounded-lg bg-blue-100 text-blue-600 flex items-center justify-center shrink-0 group-hover:bg-blue-200 transition-colors">
-                                        <svg class="w-4 h-4 sm:w-5 sm:h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"/>
-                                        </svg>
-                                    </div>
-                                    <div class="flex-1 min-w-0">
-                                        <p class="text-xs sm:text-sm font-medium text-gray-800 truncate">{{ $program->name_ar }}</p>
+                        <div class="grid grid-cols-2 sm:grid-cols-2 lg:grid-cols-3 gap-2 sm:gap-3" wire:loading.class="opacity-50 pointer-events-none" wire:target="addProduct">
+                            @foreach($products as $product)
+                                <button wire:click="addProduct({{ $product->id }})"
+                                        class="flex flex-col items-start p-2.5 sm:p-3 min-h-[44px] border border-gray-200 rounded-lg hover:border-blue-300 hover:bg-blue-50/50 active:bg-blue-100 active:scale-[0.97] transition-all text-start group">
+                                    <div class="flex items-center gap-2 w-full">
+                                        <div class="w-8 h-8 sm:w-9 sm:h-9 rounded-lg bg-emerald-100 text-emerald-600 flex items-center justify-center shrink-0 group-hover:bg-emerald-200 transition-colors">
+                                            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4"/>
+                                            </svg>
+                                        </div>
+                                        <div class="flex-1 min-w-0">
+                                            <p class="text-xs sm:text-sm font-medium text-gray-800 truncate">{{ $product->name_ar }}</p>
+                                            <p class="text-xs text-blue-600 font-bold" dir="ltr">{{ number_format($product->selling_price / 100, 2) }} {{ __('ج.م') }}</p>
+                                        </div>
                                     </div>
-                                    <svg class="w-4 h-4 text-gray-400 group-hover:text-blue-500 transition-colors shrink-0 hidden sm:block" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"/>
-                                    </svg>
                                 </button>
                             @endforeach
                         </div>