Add Ladill POS v1 — register, Pay checkout, and commerce links.

Staff-facing counter register at pos.ladill.com with catalog cart, cash and
MoMo/card checkout via Ladill Pay, CRM timeline/import, invoice prefill, and
Merchant catalog import.

Co-authored-by: Cursor <cursoragent@cursor.com>

config/email.php

@@ -0,0 +1,21 @@
+<?php
+
+return [
+    /*
+    | Email product plans. Mailboxes are priced purely by the storage tier chosen
+    | at creation (and changeable later via Upgrade). The 1 GB tier is FREE,
+    | forever, for every mailbox; larger tiers are billed monthly from the one
+    | Ladill wallet (§4-A). Money is in minor units (pesewas).
+    */
+    'currency' => env('EMAIL_CURRENCY', 'GHS'),
+    'default_quota_mb' => (int) env('EMAIL_DEFAULT_QUOTA_MB', 1024), // new mailboxes start on the free 1 GB tier
+
+    // Storage tiers: quota (MB) → monthly price (minor units). 1 GB is free.
+    'quota_tiers' => [
+        ['mb' => 1024,  'price_minor' => 0],     //  1 GB — Free forever
+        ['mb' => 5120,  'price_minor' => 1000],  //  5 GB — GHS 10
+        ['mb' => 10240, 'price_minor' => 2000],  // 10 GB — GHS 20
+        ['mb' => 25600, 'price_minor' => 3000],  // 25 GB — GHS 30
+        ['mb' => 51200, 'price_minor' => 6000],  // 50 GB — GHS 60
+    ],
+];