fix(editor+sidebar): bouton ⋯ retiré, Form via modale app, doublon du dernier fichier du tree

- "Get started with" : suppression du bouton "⋯" et de son menu mort
  (Table/Board/List/Timeline/Calendar/Gallery/Import — aucun handler).
- Pilule Form : createForm() plantait sur page vide ("Cannot read
  properties of undefined (reading 'push')") car this.inlineDBs n'était
  jamais initialisé dans editorState() (seulement via loadInlineDBs si un
  bloc inline_dbs existait déjà). Corrigé : inlineDBs:[] initialisé.
  Le nom du form est demandé via une modale Alpine personnalisée
  (flowdeck-modal*) au lieu du prompt() natif.
- Sidebar tree après drag&drop : refreshSidebarTree() préservait le lien
  "Manage Workspaces" via ul.querySelector('li:last-child') — non scopé,
  il attrapait le dernier fichier d'une sous-liste de dossier imbriquée
  (premier li:last-child du document) et le ré-insérait → doublon du
  dernier fichier. Corrigé : ':scope > li:last-child' (enfant direct).

app/templates/_page_editor_content.html

@@ -743,7 +743,7 @@
         </button>
         <button
             class="gs-pill"
-            @click="createForm()"
+            @click="openFormModal()"
         >
             <span class="gs-icon">{{ fd_icon("copy",14) }}</span> Form
         </button>
@@ -753,41 +753,7 @@
         >
             <span class="gs-icon">{{ fd_icon("file",14) }}</span> Templates
         </button>
-        <div style="position: relative">
-            <button class="gs-pill" @click="gsMoreOpen = !gsMoreOpen">
-                <span>⋯</span>
-            </button>
-            <div
-                class="gs-more-dropdown"
-                x-show="gsMoreOpen"
-                @click.outside="gsMoreOpen = false"
-                x-transition
-            >
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("bar-chart",14) }} Table
-                </div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("copy",14) }} Board
-                </div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon('list',14) }} List
-                </div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("calendar",14) }} Timeline
-                </div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("calendar",14) }} Calendar
-                </div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("image",14) }} Gallery
-                </div>
-                <div class="gs-more-sep"></div>
-                <div class="gs-more-item" @click="gsMoreOpen=false">
-                    {{ fd_icon("download",14) }} Import
-                </div>
-            </div>
         </div>
-    </div>
 
     <div class="editor-statusbar">
         <span x-show="saving">Saving...</span>
@@ -1010,4 +976,27 @@
                 </div>
             </div>
 
-        </div>
+                    <!-- ═══════════ Get Started Form name modal ═══════════ -->
+                    <div class="flowdeck-modal-overlay"
+                         x-show="formOpen"
+                         style="position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:2100;display:flex;align-items:center;justify-content:center;padding:20px;"
+                         @click.self="formOpen = false"
+                         x-transition.opacity>
+                        <div class="flowdeck-modal" @keydown.escape="formOpen = false">
+                            <div class="flowdeck-modal-header">
+                                <h3>{{ fd_icon("copy",16) }} Create form</h3>
+                                <button class="flowdeck-modal-close" @click="formOpen = false">&times;</button>
+                            </div>
+                            <div class="flowdeck-modal-body">
+                                <p>Enter a name for the new form.</p>
+                                <input class="flowdeck-modal-input" type="text" x-model="formName" x-ref="formNameInput"
+                                       placeholder="Form name" @keydown.enter="confirmCreateForm()">
+                            </div>
+                            <div class="flowdeck-modal-footer">
+                                <button class="flowdeck-modal-btn cancel" @click="formOpen = false">Cancel</button>
+                                <button class="flowdeck-modal-btn confirm" @click="confirmCreateForm()">Create</button>
+                            </div>
+                        </div>
+                    </div>
+
+                </div>

app/templates/base.html

@@ -2613,8 +2613,10 @@
           .then(html => {
             const ul = document.getElementById('sidebar-workspace-items');
             if (!ul) return;
-            // Preserve the "Manage Workspaces" link (last <li>)
-            const manageLink = ul.querySelector('li:last-child');
+            // Preserve the "Manage Workspaces" link (direct last <li> child only —
+                        // plain 'li:last-child' grabs the last file of a nested folder sublist
+                        // when the tree has folders, splicing it back in → duplicated entry)
+                        const manageLink = ul.querySelector(':scope > li:last-child');
             ul.innerHTML = html;
             if (manageLink) ul.appendChild(manageLink);
             // Le HTML injecté porte des directives Alpine (@contextmenu,