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>

app/Support/helpers.php

@@ -0,0 +1,40 @@
+<?php
+
+use App\Models\User;
+
+if (! function_exists('ladill_account')) {
+    /**
+     * The account the current request acts within — the owner User. Defaults to
+     * the authenticated user; a team member who switched accounts gets the owner.
+     * Set by the SetActingAccount middleware.
+     */
+    function ladill_account(): ?User
+    {
+        $request = request();
+
+        return $request->attributes->get('actingAccount') ?? $request->user();
+    }
+}
+
+if (! function_exists('ladill_domains_url')) {
+    function ladill_domains_url(string $path = ''): string
+    {
+        return 'https://'.config('app.domains_domain').($path !== '' ? '/'.ltrim($path, '/') : '');
+    }
+}
+
+if (! function_exists('ladill_account_url')) {
+    function ladill_account_url(string $path = ''): string
+    {
+        return 'https://'.config('app.account_domain').($path !== '' ? '/'.ltrim($path, '/') : '');
+    }
+}
+
+if (! function_exists('pos_money')) {
+    function pos_money(?int $minor, ?string $currency = null): string
+    {
+        $currency = $currency ?: config('pos.default_currency', 'GHS');
+
+        return $currency.' '.number_format(((int) $minor) / 100, 2);
+    }
+}