Feature: Creating Shipping Carrier Contracts

database/migrations/2026_07_16_000001_create_shipments_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('shipments', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('order_id')->constrained(config('lunar.database.table_prefix').'orders');
+            $table->string('carrier');
+            $table->string('tracking_reference')->unique();
+            $table->string('parent_reference')->nullable();
+            $table->timestamp('label_printed_at')->nullable();
+            $table->string('manifest_reference')->nullable();
+            $table->timestamp('cancelled_at')->nullable();
+            $table->json('meta')->nullable();
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('shipments');
+    }
+};

src/Shipping/Contracts/CarrierFulfillmentInterface.php

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+<?php
+
+namespace Modules\Core\Shipping\Contracts;
+
+use Lunar\Models\Order;
+use Modules\Core\Shipping\Models\Shipment;
+
+interface CarrierFulfillmentInterface
+{
+    /**
+     * Create a shipment with the carrier for the given order.
+     */
+    public function createShipment(Order $order, array $overrides = []): Shipment;
+
+    /**
+     * Fetch the printable label for a shipment (raw file bytes).
+     */
+    public function printLabel(Shipment $shipment): string;
+
+    /**
+     * Cancel a shipment with the carrier.
+     */
+    public function cancelShipment(Shipment $shipment): void;
+}

src/Shipping/Contracts/SupportsLivePricing.php

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+<?php
+
+namespace Modules\Core\Shipping\Contracts;
+
+/**
+ * Marker for a Lunar\Shipping\Interfaces\ShippingRateInterface driver that
+ * calculates its price from a live carrier API rather than the manually
+ * configured ShippingRate price/price-breaks. Admin UI uses this to hide
+ * the manual pricing fields for such drivers — carriers without a pricing
+ * API simply don't implement it, and manual pricing remains required.
+ */
+interface SupportsLivePricing {}

src/Shipping/Contracts/SupportsManifestBatching.php

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+<?php
+
+namespace Modules\Core\Shipping\Contracts;
+
+use Illuminate\Support\Collection;
+use Modules\Core\Shipping\DataTransferObjects\ManifestResult;
+
+/**
+ * Optional capability for carriers that batch shipments into a manifest
+ * before courier pickup (e.g. ACS's end-of-day pickup list). Carriers
+ * without this concept simply don't implement it.
+ */
+interface SupportsManifestBatching
+{
+    /**
+     * Shipments created but not yet included in an issued manifest.
+     */
+    public function pendingForManifest(): Collection;
+
+    /**
+     * Finalize the given shipments into a manifest with the carrier.
+     */
+    public function issueManifest(Collection $shipments): ManifestResult;
+}

src/Shipping/Models/Shipment.php

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+<?php
+
+namespace Modules\Core\Shipping\Models;
+
+use Illuminate\Database\Eloquent\Casts\AsArrayObject;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Lunar\Models\Order;
+
+class Shipment extends Model
+{
+    protected $guarded = [];
+
+    protected $casts = [
+        'meta' => AsArrayObject::class,
+        'label_printed_at' => 'datetime',
+        'cancelled_at' => 'datetime',
+    ];
+
+    public function order(): BelongsTo
+    {
+        return $this->belongsTo(Order::class);
+    }
+}