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/Qr/QrDateFormatter.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Support\Qr;
+
+use Carbon\Carbon;
+
+class QrDateFormatter
+{
+    public static function forInput(?string $value): string
+    {
+        if ($value === null || trim($value) === '') {
+            return '';
+        }
+
+        try {
+            return Carbon::parse($value)->format('Y-m-d');
+        } catch (\Throwable) {
+            return '';
+        }
+    }
+
+    public static function forDisplay(?string $value): string
+    {
+        if ($value === null || trim($value) === '') {
+            return '';
+        }
+
+        $value = trim($value);
+
+        if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $value)) {
+            try {
+                return Carbon::createFromFormat('Y-m-d', $value)->format('D, j M Y');
+            } catch (\Throwable) {
+                return $value;
+            }
+        }
+
+        return $value;
+    }
+
+    public static function normalize(?string $value, int $maxLength = 60): string
+    {
+        if ($value === null || trim($value) === '') {
+            return '';
+        }
+
+        $value = trim($value);
+
+        try {
+            return Carbon::parse($value)->format('Y-m-d');
+        } catch (\Throwable) {
+            return mb_substr($value, 0, $maxLength);
+        }
+    }
+}