fix: AuthManager import + openConfigModal reference erreur

frontend/js/config.js

@@ -1,5 +1,5 @@
 // config.js — extracted from app.js (3872-4865)
-import { api } from './auth.js';
+import { api, AuthManager } from './auth.js';
 import { state } from './state.js';
 import { el, icon, openFile } from './viewer.js';
 import { syncVaultSelectors, setSelectedVaultContext, refreshSidebarForContext, loadVaults, loadVaultSettings, loadTags, TagFilterService, refreshSidebarTreePreservingState } from './sidebar.js';
@@ -621,7 +621,8 @@ function initConfigModal() {
   var profileBtn = document.getElementById("profile-open-btn");
   if (profileBtn) {
     profileBtn.addEventListener("click", function() {
-      openConfigModal();
+      var modal = document.getElementById("config-modal");
+      if (modal) modal.classList.add("active");
       setTimeout(function() {
         var el = document.getElementById("cfg-profile");
         if (el) el.scrollIntoView({ behavior: 'smooth' });