Initial commit: Pireon Admin — headless admin panel and public API

Laravel 13 + Filament 5 admin panel and REST API for a non-profit developer
collective, backed by the Pireon OAuth identity server. The public site is a
separate, server-rendered application consuming /api/public/v1.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

lang/en/pireon.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'sign_in' => 'Sign in',
+    'sign_in_intro' => 'Sign in with your e-mail and password.',
+    'signing_in' => 'Checking your credentials…',
+    'password_grant_disabled' => 'Password sign-in is switched off on this installation. Please tell an administrator.',
+    'server_unavailable' => 'The identity server is not responding. This is not about your credentials; please tell an administrator.',
+    'sign_out' => 'Sign out',
+
+    'denied' => 'Sign-in was not completed: :reason',
+    'inactive' => 'Your account is deactivated. Please contact an administrator.',
+    'pending_approval' => 'Your registration is still awaiting approval by an administrator.',
+    'no_permission' => 'Your account is not allowed into this panel. Ask an administrator to assign you a role.',
+    'cannot_grant_super_admin' => 'Only a super admin may grant the super admin role.',
+
+    'not_configured_title' => 'The OAuth client is not configured',
+    'not_configured_body' => 'Register this application at :server, then fill in PIREON_CLIENT_ID and PIREON_CLIENT_SECRET in your .env file.',
+
+    'account' => [
+        'remote_roles' => 'Roles on the identity server',
+        'remote_roles_hint' => 'Informational only: permissions for this application are managed here, not on the OAuth server.',
+        'managed_remotely' => 'This field is managed at :server and refreshed on every sign-in.',
+    ],
+];