Add Frontdesk-style Devices registry for POS hardware.

Register tills, customer displays, kitchen screens, printers, scanners,
and tablets per branch. Customer displays share the branch display token
and mark online when the public screen polls; stale devices go offline
on a schedule.

config/pos.php

@@ -49,4 +49,34 @@ return [
         'description' => 'Your own payment gateway, unlimited catalog, multi-branch & team — from GHS 790/mo.',
         'route' => 'pos.pro.index',
     ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | Hardware / screen devices (register, customer display, kitchen, …)
+    |--------------------------------------------------------------------------
+    */
+    'device_types' => [
+        'register' => 'Register / till computer',
+        'customer_display' => 'Customer display',
+        'kitchen_display' => 'Kitchen display',
+        'receipt_printer' => 'Receipt printer',
+        'barcode_scanner' => 'Barcode scanner',
+        'tablet' => 'Tablet',
+    ],
+
+    /** Types that get a server-generated token for unattended open URLs / agents. */
+    'device_token_types' => [
+        'customer_display',
+        'kitchen_display',
+        'receipt_printer',
+    ],
+
+    'device_registration_hints' => [
+        'register' => 'Tracked for your team. Staff sign in on this machine — no device token is issued.',
+        'customer_display' => 'Creates (or reuses) the branch customer-display token. Open the URL on a second screen facing the customer.',
+        'kitchen_display' => 'Token for kitchen screen provisioning. Kitchen currently opens the signed-in Kitchen page for this account.',
+        'receipt_printer' => 'Token for a future print agent. Paper size still comes from branch receipt settings.',
+        'barcode_scanner' => 'Tracked for inventory. USB scanners work as keyboard wedges on the register today.',
+        'tablet' => 'Tracked for inventory. Use Customer display or Kitchen display if the tablet should run unattended.',
+    ],
 ];