feat(workspace,editor): creation dans le dossier courant + sync live du titre (sidebar/header)

- creation fichier/dossier a la racine du dossier courant ou d'un dossier cible (context-menu, boutons de survol) via createPage/showCreateFolderModal(parentId)
- instances de modeles en tant qu'enfant d'un dossier (parent_id) ; nom vide -> 'Untitled'
- sidebar de la librairie rafraichi apres delete/move/duplicate/rename (_syncSidebar)
- editeur: le titre se synchronise en direct dans le sidebar, le breadcrumb et l'onglet (pages et fichiers) et persiste via PUT /board/api/pages/{id}

app/templates/local_workspace.html

@@ -648,6 +648,19 @@ window._wsInitData = (function() {
         var self = this;
         window.addEventListener('online', function() { self.online = true; });
         window.addEventListener('offline', function() { self.online = false; });
+        // Side-peek editor posts renames here so the tree/peek title stay in sync.
+        window.addEventListener('message', function(ev) {
+          if (ev.origin !== window.location.origin) return;
+          var m = ev.data;
+          if (!m || m.type !== 'fd-page-renamed' || m.id == null) return;
+          var node = self._findNodeById(self.tree, m.id);
+          if (node) node.name = m.title || 'Untitled';
+          self.displayTree = self.displayTree.slice();
+          var t = document.getElementById('ws-preview-title');
+          if (t && self.previewItem && self.previewItem.id === m.id) t.textContent = m.title || 'Untitled';
+          var side = document.querySelector('.sidebar-item.ws-tree-item[data-id="' + m.id + '"] .page-name');
+          if (side) side.textContent = m.title || 'Untitled';
+        });
         // Load workspace tags
         this.loadWorkspaceTags();
       } catch(e) { console.error('Tree load error:', e); this.loaded = true; }
@@ -864,6 +877,7 @@ window._wsInitData = (function() {
     selectForPreview(node) {
       var panel = document.getElementById('ws-preview-panel');
       if (!panel) return;
+      this.previewItem = node;
       document.getElementById('ws-preview-icon').innerHTML = this._fileIcon(node.name, node.is_folder, node.content_format, node.page_icon);
       document.getElementById('ws-preview-title').textContent = node.name;
       var openBtn = document.getElementById('ws-preview-open-btn');
@@ -1360,10 +1374,10 @@ window._wsInitData = (function() {
 
       switch(action) {
         case 'new-file':
-          window.FlowDeck.createPage();
+          window.FlowDeck.createPage(id);
           break;
         case 'new-folder':
-          window.FlowDeck.showCreateFolderModal();
+          window.FlowDeck.showCreateFolderModal(id);
           break;
         case 'rename':
           this.startRename({db_id: id, name: name});
@@ -2724,8 +2738,8 @@ console.log('FLOWDECK v2.4.6 — IIFE done, _wsInitData keys:', Object.keys(wind
           <div class="actions">
             <template x-if="node.is_folder">
               <span style="display:flex;gap:2px">
-                <button class="ws-act" @click.stop="window.FlowDeck.createPage()" title="New file">{{ fd_icon("file",14) }}</button>
-                <button class="ws-act" @click.stop="window.FlowDeck.showCreateFolderModal()" title="New folder">{{ fd_icon("folder",14) }}</button>
+                <button class="ws-act" @click.stop="window.FlowDeck.createPage(node.id)" title="New file">{{ fd_icon("file",14) }}</button>
+                <button class="ws-act" @click.stop="window.FlowDeck.showCreateFolderModal(node.id)" title="New folder">{{ fd_icon("folder",14) }}</button>
                 <a class="ws-act" href="/local-workspace" title="Open workspace page" style="text-decoration:none;display:inline-flex;align-items:center;">{{ fd_icon("external-link",14) }}</a>
               </span>
             </template>