add composer-unused, comprehensive docs, and project restructure

- Add icanhazstring/composer-unused as dev dependency for dependency hygiene checks
- Add German documentation (docs/) covering architecture, conventions, workflows, and developer checklists
- Add API layer (ApiAuth, ApiBootstrap, ApiResponse), audit, scheduler, custom fields, and SSO services
- Add Microsoft OIDC SSO, API token management, and user lifecycle features
- Add swagger-ui vendor integration and OpenAPI spec
- Add production Docker setup and bin/ scripts
- Update composer dependencies, config, templates, and frontend assets throughout

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/Support/Search/SearchUiMetaProvider.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace MintyPHP\Support\Search;
+
+class SearchUiMetaProvider
+{
+    private const ICONS = [
+        'address-book' => 'bi-people',
+        'users' => 'bi-person-badge',
+        'tenants' => 'bi-buildings',
+        'departments' => 'bi-diagram-3',
+        'roles' => 'bi-people',
+        'permissions' => 'bi-shield-lock',
+        'scheduled-jobs' => 'bi-calendar-check',
+        'pages' => 'bi-file-text',
+        'mail-log' => 'bi-envelope-paper',
+        'api-audit' => 'bi-shield-check',
+        'docs' => 'bi-journal-text',
+    ];
+
+    private const LIST_URL_KEYS = [
+        'address-book',
+        'users',
+        'tenants',
+        'departments',
+        'roles',
+        'permissions',
+        'scheduled-jobs',
+        'pages',
+        'mail-log',
+        'api-audit',
+    ];
+
+    public static function iconForKey(string $key): string
+    {
+        return self::ICONS[$key] ?? 'bi-search';
+    }
+
+    public static function listUrl(string $key, string $query): string
+    {
+        $encoded = urlencode($query);
+
+        return match ($key) {
+            'address-book' => lurl('address-book') . '?search=' . $encoded,
+            'users' => lurl('admin/users') . '?search=' . $encoded,
+            'tenants' => lurl('admin/tenants') . '?search=' . $encoded,
+            'departments' => lurl('admin/departments') . '?search=' . $encoded,
+            'roles' => lurl('admin/roles') . '?search=' . $encoded,
+            'permissions' => lurl('admin/permissions') . '?search=' . $encoded,
+            'scheduled-jobs' => lurl('admin/scheduled-jobs') . '?search=' . $encoded,
+            'pages' => lurl(''),
+            'mail-log' => lurl('admin/mail-log') . '?search=' . $encoded,
+            'api-audit' => lurl('admin/api-audit') . '?search=' . $encoded,
+            default => lurl(''),
+        };
+    }
+
+    public static function hasIconForKey(string $key): bool
+    {
+        return array_key_exists($key, self::ICONS);
+    }
+
+    public static function hasListUrlForKey(string $key): bool
+    {
+        return in_array($key, self::LIST_URL_KEYS, true);
+    }
+}