feat(admin): 完善后台角色管理与权限同步，新增当前管理员信息接口

app/Support/AdminAuthProfile.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Support;
+
+use App\Models\AdminUser;
+
+final class AdminAuthProfile
+{
+    /**
+     * @return array{
+     *   id: int,
+     *   username: string,
+     *   nickname: string,
+     *   email: ?string,
+     *   permissions: list<string>,
+     *   navigation: list<array{
+     *     segment: string,
+     *     label: string,
+     *     href: string,
+     *     activeMatchPrefix?: string,
+     *     requiredAny?: list<string>
+     *   }>
+     * }
+     */
+    public static function fromAdmin(AdminUser $admin): array
+    {
+        $fresh = $admin->fresh();
+        $permissionSlugs = $fresh->adminPermissionSlugs();
+
+        return [
+            'id' => $fresh->id,
+            'username' => $fresh->username,
+            'nickname' => $fresh->name,
+            'email' => $fresh->email,
+            'permissions' => $permissionSlugs,
+            'navigation' => AdminAuthorizationRegistry::visibleNavigationItems($permissionSlugs),
+        ];
+    }
+}