release(v1.9.12): feat(pro-acl): add user groups and group-aware ACL

public/api/pro/groups/save.php

@@ -0,0 +1,51 @@
+<?php
+// public/api/pro/groups/save.php
+declare(strict_types=1);
+
+header('Content-Type: application/json; charset=utf-8');
+
+require_once __DIR__ . '/../../../../config/config.php';
+require_once PROJECT_ROOT . '/src/controllers/AdminController.php';
+
+try {
+    if (($_SERVER['REQUEST_METHOD'] ?? 'GET') !== 'POST') {
+        http_response_code(405);
+        echo json_encode(['success' => false, 'error' => 'Method not allowed']);
+        return;
+    }
+
+    if (session_status() !== PHP_SESSION_ACTIVE) {
+        session_start();
+    }
+
+    AdminController::requireAuth();
+    AdminController::requireAdmin();
+    AdminController::requireCsrf();
+
+    $raw  = file_get_contents('php://input');
+    $body = json_decode($raw, true);
+    if (!is_array($body)) {
+        http_response_code(400);
+        echo json_encode(['success' => false, 'error' => 'Invalid JSON payload.']);
+        return;
+    }
+
+    $groups = $body['groups'] ?? null;
+    if (!is_array($groups)) {
+        http_response_code(400);
+        echo json_encode(['success' => false, 'error' => 'Invalid groups format.']);
+        return;
+    }
+
+    $ctrl = new AdminController();
+    $ctrl->saveProGroups($groups);
+
+    echo json_encode(['success' => true], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+} catch (Throwable $e) {
+    $code = $e instanceof InvalidArgumentException ? 400 : 500;
+    http_response_code($code);
+    echo json_encode([
+        'success' => false,
+        'error'   => 'Error saving groups: ' . $e->getMessage(),
+    ]);
+}