release(v2.0.0): feat(pro): client portals + portal login flow

public/api/pro/portals/get.php

@@ -0,0 +1,27 @@
+<?php
+// public/api/pro/portals/get.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/PortalController.php';
+
+try {
+    $slug = isset($_GET['slug']) ? (string)$_GET['slug'] : '';
+
+    // For v1: we do NOT require auth here; this is just metadata,
+    // real ACL/access control must still be enforced at upload/download endpoints.
+    $portal = PortalController::getPortalBySlug($slug);
+
+    echo json_encode([
+        'success' => true,
+        'portal'  => $portal,
+    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+} catch (Throwable $e) {
+    http_response_code(404);
+    echo json_encode([
+        'success' => false,
+        'error'   => $e->getMessage(),
+    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+}