printers: make the installer map public (no login)

The /printer-installer map only reads the public install-list and downloads
the install .bat - both jwt-optional endpoints - so requiring auth was an
unnecessary gate. Drop requiresAuth; it now matches the other display/kiosk
tools (public).

plugins/printers/frontend/routes.js

@@ -70,7 +70,10 @@ export const toplevel = [
     path: '/printer-installer',
     name: 'printer-installer-map',
     component: () => import('./views/PrinterInstallerMap.vue'),
-    meta: { requiresAuth: true, plugin: 'printers' }
+    // Public: it only reads the public install-list + downloads the install
+    // .bat (both jwt-optional endpoints), so no login needed - same as the
+    // other display/kiosk tools.
+    meta: { plugin: 'printers' }
   },
   {
     path: '/print/printer-qr',