feat: sidebar compact + menu contextuel (clic droit/long press) + boutons Expand/Collapse All

Sidebar workspace:
- Arbre plus compact: padding réduit (4+12*depth au lieu de 8+16),
  gap 4px, min-height 24px, font 13px, chevron 12px
- Boutons d'action (📄📁✏️🗑) remplacés par menu contextuel
  au clic droit (@contextmenu.prevent) et long-press mobile (500ms)
- Menu: New File, New Folder (si dossier), Rename, Delete
- Nom de l'item affiché en bas du menu

Page workspace:
- Boutons ⊞ (Expand All) et ⊟ (Collapse All) dans la toolbar
- expandAll(): parcourt l'arbre, set expanded[id]=true, toggle DOM
- collapseAll(): vide expanded, masque tous les <ul>

app/templates/base.html

@@ -116,14 +116,18 @@
       @dragover.prevent="dragOver($event, {{ page.db_id }}, {{ 'true' if page.is_folder else 'false' }})"
       @dragleave="dragLeave($event)"
       @drop.prevent="drop($event, {{ page.db_id }})"
-      style="padding-left:{{ 8 + depth * 16 }}px;">
+      style="padding-left:{{ 4 + depth * 12 }}px;"
+      @contextmenu.prevent="showWsContext($event, {{ page.db_id }}, '{{ page.name | e }}', {{ 'true' if page.is_folder else 'false' }})"
+      @touchstart="wsTouchStart($event)"
+      @touchend="wsTouchEnd($event, {{ page.db_id }}, '{{ page.name | e }}', {{ 'true' if page.is_folder else 'false' }})"
+      @touchmove="wsTouchMove($event)">
     {% if page.is_folder %}
     <button class="tree-chevron" 
             @click.stop="toggleTreeFolder({{ page.db_id }})"
             :class="{ open: expandedFolders[{{ page.db_id }}] }"
             title="Toggle folder">▶</button>
     {% else %}
-    <span style="width:16px;flex-shrink:0;"></span>
+    <span style="width:12px;flex-shrink:0;"></span>
     {% endif %}
     <span class="page-icon">{{ page.icon }}</span>
     {% if page.is_folder %}
@@ -134,13 +138,6 @@
     {% else %}
     <a href="/pages/{{ page.db_id }}" class="page-name" draggable="false">{{ page.name }}</a>
     {% endif %}
-    <div class="sidebar-item-actions">
-      {% if page.is_folder %}
-      <button class="ws-act" @click.stop="newPageInFolder({{ page.db_id }})" title="New file in folder">📄</button>
-      <button class="ws-act" @click.stop="newFolderInFolder({{ page.db_id }})" title="New sub-folder">📁</button>
-      {% endif %}
-      <button class="ws-act danger" @click.stop="deleteWorkspacePage({{ page.db_id }})" title="Delete">×</button>
-    </div>
   </li>
     {% if page.children %}
     <li x-show="expandedFolders[{{ page.db_id }}]" x-transition style="list-style:none;margin:0;padding:0;">
@@ -446,6 +443,36 @@
     </div>
   </div>
 
+  <!-- ═══════════ WORKSPACE TREE CONTEXT MENU ═══════════ -->
+  <div class="context-menu" id="ws-context-menu"
+       :class="{ visible: wsCtx.visible }"
+       :style="'left:' + wsCtx.x + 'px; top:' + wsCtx.y + 'px'"
+       @click.away="wsCtx.visible = false">
+    <template x-if="wsCtx.isFolder">
+      <div class="context-menu-section">
+        <div class="context-menu-item" @click="wsCtxAction('new-file')">
+          <span class="menu-icon">📄</span> New File
+        </div>
+        <div class="context-menu-item" @click="wsCtxAction('new-folder')">
+          <span class="menu-icon">📁</span> New Folder
+        </div>
+      </div>
+    </template>
+    <div class="context-menu-section">
+      <div class="context-menu-item" @click="wsCtxAction('rename')">
+        <span class="menu-icon">✏️</span> Rename
+      </div>
+      <div class="context-menu-item" @click="wsCtxAction('delete')">
+        <span class="menu-icon">🗑</span> Delete
+      </div>
+    </div>
+    <div class="context-menu-section">
+      <div class="context-menu-item text-dim" style="font-size:11px;cursor:default;">
+        <span x-text="wsCtx.name"></span>
+      </div>
+    </div>
+  </div>
+
   <!-- ═══════════ TOOLTIP ═══════════ -->
   <div class="tooltip" id="tooltip" x-ref="tooltip"></div>
 
@@ -492,6 +519,64 @@
       contextActions: {},
       showNewPageMenu: false,
 
+      // ── Workspace tree context menu ──
+      wsCtx: { visible: false, x: 0, y: 0, id: null, name: '', isFolder: false },
+      wsTouchTimer: null,
+      showWsContext(ev, id, name, isFolder) {
+        this.wsCtx = { visible: true, x: ev.clientX, y: ev.clientY, id: id, name: name, isFolder: isFolder };
+      },
+      hideWsContext() { this.wsCtx.visible = false; },
+      wsTouchStart(ev) {
+        var self = this;
+        this.wsTouchTimer = setTimeout(function() {
+          self.wsTouchTimer = null;
+          var el = ev.target.closest('.ws-tree-item');
+          if (el) {
+            var id = parseInt(el.getAttribute('data-id'));
+            var name = el.getAttribute('data-name') || '';
+            var isFolder = el.getAttribute('data-is-folder') === 'true';
+            var touch = ev.touches[0];
+            self.wsCtx = { visible: true, x: touch.clientX, y: touch.clientY, id: id, name: name, isFolder: isFolder };
+          }
+        }, 500);
+      },
+      wsTouchEnd(ev, id, name, isFolder) {
+        if (this.wsTouchTimer) { clearTimeout(this.wsTouchTimer); this.wsTouchTimer = null; return; }
+        // Already opened by touchstart; prevent Alpine @touchend from also firing the context menu
+        ev.preventDefault();
+      },
+      wsTouchMove(ev) {
+        if (this.wsTouchTimer) { clearTimeout(this.wsTouchTimer); this.wsTouchTimer = null; }
+      },
+      wsCtxAction(action) {
+        var id = this.wsCtx.id;
+        var name = this.wsCtx.name;
+        this.wsCtx.visible = false;
+        if (!id) return;
+        switch(action) {
+          case 'new-file':
+            this.newPageInFolder(id);
+            break;
+          case 'new-folder':
+            this.newFolderInFolder(id);
+            break;
+          case 'rename':
+            var newName = prompt('Rename:', name);
+            if (newName && newName.trim()) {
+              fetch('/api/local-workspace/items/' + id, {
+                method: 'PUT',
+                headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': this.getCsrfToken() },
+                body: JSON.stringify({ name: newName.trim() })
+              }).then(function(r) { if (r.ok) window.location.reload(); });
+            }
+            break;
+          case 'delete':
+            if (!confirm('Delete "' + name + '"?')) break;
+            this.deleteWorkspacePage(id);
+            break;
+        }
+      },
+
       // ── Favorites tracking ──
       favoriteIds: new Set([{% for p in favorite_pages %}'{{ p.id }}'{% if not loop.last %},{% endif %}{% endfor %}]),
 

app/templates/local_workspace.html

@@ -158,6 +158,8 @@
       📁 <span x-text="breadcrumb.length > 0 ? breadcrumb[breadcrumb.length-1].name : ''"></span>
     </h1>
     <div class="ws-toolbar">
+      <button class="btn-icon" @click="expandAll()" title="Expand all">⊞</button>
+      <button class="btn-icon" @click="collapseAll()" title="Collapse all">⊟</button>
       <button class="btn-icon" @click="openModal('file')" title="New file">📄</button>
       <button class="btn-icon" @click="openModal('folder')" title="New folder">📁</button>
     </div>
@@ -448,6 +450,41 @@ document.addEventListener('alpine:init', function() {
       window.location = '/local-workspace?folder=' + id;
     },
 
+    // ── Expand / Collapse all ──
+    expandAll() {
+      var self = this;
+      this._walkTree(this.tree, function(n) {
+        if (n.is_folder && n.children && n.children.length > 0) {
+          self.expanded[n.id] = true;
+        }
+      });
+      this.expanded = Object.assign({}, this.expanded);
+      // Toggle static HTML for renderChildren
+      this._toggleAllUl(this.$el, true);
+    },
+    collapseAll() {
+      this.expanded = {};
+      this._toggleAllUl(this.$el, false);
+    },
+    _walkTree(nodes, fn) {
+      for (var i=0; i<nodes.length; i++) {
+        fn(nodes[i]);
+        if (nodes[i].children) this._walkTree(nodes[i].children, fn);
+      }
+    },
+    _toggleAllUl(el, show) {
+      var uls = el.querySelectorAll('ul.ws-tree');
+      for (var i=0; i<uls.length; i++) {
+        uls[i].style.display = show ? '' : 'none';
+      }
+      // Also toggle chevrons
+      var chevs = el.querySelectorAll('.ws-chevron');
+      for (var j=0; j<chevs.length; j++) {
+        if (show) chevs[j].classList.add('open');
+        else chevs[j].classList.remove('open');
+      }
+    },
+
     // ── Search / Filter ──
     doFilter() {
       var q = (this.searchQuery || '').toLowerCase().trim();

static/css/app.css

@@ -321,15 +321,15 @@ input, select, textarea { font-family: inherit; color: inherit; }
   position: relative;
   display: flex;
   align-items: center;
-  gap: var(--space-sm);
-  padding: 3px 6px;
-  padding-left: 8px;
+  gap: 4px;
+  padding: 2px 4px;
+  padding-left: 4px;
   border-radius: var(--radius-sm);
-  font-size: 14px;
+  font-size: 13px;
   color: var(--text-primary);
   cursor: pointer;
   transition: background var(--transition);
-  min-height: 28px;
+  min-height: 24px;
 }
 
 .sidebar-item:hover {