Feature: Creating Cart Service, Cart Events, Save For Later functionality, Adding Filament Views for viewing abandoned carts

src/Cart/Events/CartLineSaved.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Modules\Core\Cart\Events;
+
+use Lunar\Models\Cart;
+use Lunar\Models\CartLine;
+
+/**
+ * A line was moved OUT of the purchasable cart and into "saved for later" —
+ * not a removal (the row still exists), but distinct from CartLineUpdated
+ * since it's a state transition worth its own hook (e.g. abandoned-cart
+ * recovery treating a saved line very differently from a deleted one).
+ */
+class CartLineSaved
+{
+    public function __construct(
+        public readonly Cart $cart,
+        public readonly CartLine $line,
+    ) {}
+}