Commerce administration dashboard

* Product catalogue
* Product categories
* Physical, digital, service, and bundle product types
* Product variants and option storage
* SKU management
* Product publishing states
* Pricing and comparison pricing
* Inventory quantities
* Low-stock thresholds
* Inventory movement history
* Customer records and addresses
* Orders and order items
* Payment and fulfilment statuses
* Payment transaction storage
* Promotions and coupon codes
* Shipping methods
* Tax rates
* Payment, shipping, tax, and inventory provider contracts
* Default manual payment provider
* Default flat-rate shipping provider
* Public product REST API
* Administration navigation
* Commerce permissions
* Module registration
* Module boot tests

Modules/Commerce/Services/ConfiguredTaxProvider.php

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+<?php
+namespace Modules\Commerce\Services;
+use Modules\Commerce\Contracts\TaxProvider;
+final class ConfiguredTaxProvider implements TaxProvider { public function calculate(float $subtotal,array $address=[]): float { return config('commerce.prices_include_tax') ? 0.0 : round($subtotal * 0.2,2); } }

Modules/Commerce/Services/DatabaseInventoryProvider.php

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+<?php
+namespace Modules\Commerce\Services;
+use Illuminate\Support\Facades\DB;
+use Modules\Commerce\Contracts\InventoryProvider;
+use Modules\Commerce\Models\InventoryMovement;
+use Modules\Commerce\Models\Product;
+final class DatabaseInventoryProvider implements InventoryProvider
+{
+    public function adjust(Product $product, int $quantity, string $reason, ?int $userId = null): void
+    {
+        DB::transaction(function () use ($product,$quantity,$reason,$userId) { $product->increment('stock_quantity',$quantity); InventoryMovement::create(['product_id'=>$product->id,'quantity'=>$quantity,'reason'=>$reason,'created_by'=>$userId]); });
+    }
+    public function available(Product $product): int { return max(0,(int)$product->stock_quantity); }
+}

Modules/Commerce/Services/FlatRateShippingProvider.php

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+<?php
+namespace Modules\Commerce\Services;
+use Modules\Commerce\Contracts\ShippingProvider;
+final class FlatRateShippingProvider implements ShippingProvider { public function quote(array $address,float $subtotal): float { return $subtotal >= 50 ? 0.0 : 4.95; } }

Modules/Commerce/Services/ManualPaymentProvider.php

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+<?php
+namespace Modules\Commerce\Services;
+use Modules\Commerce\Contracts\PaymentProvider;
+use Modules\Commerce\Models\Order;
+final class ManualPaymentProvider implements PaymentProvider
+{ public function charge(Order $order,array $data=[]): array { return ['status'=>'pending','provider'=>'manual','reference'=>null]; } public function refund(Order $order,float $amount): array { return ['status'=>'pending','provider'=>'manual','amount'=>$amount]; } }