diff --git a/server/shell.ts b/server/shell.ts
index 3c66c027..0b3c6c75 100644
--- a/server/shell.ts
+++ b/server/shell.ts
@@ -1267,6 +1267,42 @@ export function renderShell(opts: ShellOptions): string {
         }
       });
 
+      tabBar.addEventListener('layers-close-all', () => {
+        // Track all closed modules so server merge doesn't resurrect them
+        layers.forEach(l => _closedModuleIds.add(l.moduleId));
+        // Clean up space layer refs
+        const token = document.cookie.match(/encryptid_token=([^;]+)/)?.[1];
+        layers.forEach(l => {
+          if (l.spaceSlug && l._spaceRefId && token) {
+            fetch('/api/spaces/' + encodeURIComponent(spaceSlug) + '/nest/' + encodeURIComponent(l._spaceRefId), {
+              method: 'DELETE',
+              headers: { 'Authorization': 'Bearer ' + token },
+            }).catch(() => {});
+          }
+        });
+        // Remove all cached panes
+        if (tabCache) {
+          layers.forEach(l => tabCache.removePane(l.moduleId));
+          tabCache.hideAllPanes();
+        }
+        layers = [];
+        saveTabs();
+        // Show the dashboard
+        const dashboard = document.querySelector('rstack-user-dashboard');
+        if (dashboard) {
+          dashboard.style.display = '';
+          if (dashboard.refresh) dashboard.refresh();
+          if (dashboard.setOpenTabs) dashboard.setOpenTabs([]);
+        }
+        const app = document.getElementById('app');
+        if (app) app.classList.remove('canvas-layout');
+        tabBar.setAttribute('active', '');
+        tabBar.setLayers([]);
+        currentModuleId = '';
+        var dashUrl = window.location.hostname.endsWith('.rspace.online') ? '/' : '/' + spaceSlug;
+        history.pushState({ dashboard: true, spaceSlug: spaceSlug }, '', dashUrl);
+      });
+
       tabBar.addEventListener('layer-reorder', (e) => {
         const { layerId, newIndex } = e.detail;
         const oldIdx = layers.findIndex(l => l.id === layerId);
@@ -1482,6 +1518,9 @@ export function renderShell(opts: ShellOptions): string {
         tabBar.addEventListener('layer-close', (e) => {
           sync.removeLayer(e.detail.layerId);
         });
+        tabBar.addEventListener('layers-close-all', () => {
+          sync.getLayers().forEach(l => sync.removeLayer(l.id));
+        });
         tabBar.addEventListener('layer-reorder', (e) => {
           const { layerId, newIndex } = e.detail;
           const all = sync.getLayers(); // already sorted by order
@@ -1822,6 +1861,7 @@ export function renderExternalAppShell(opts: ExternalAppShellOptions): string {
       tabBar.addEventListener('layer-switch', (e) => { saveTabs(); window.location.href = window.__rspaceNavUrl(spaceSlug, e.detail.moduleId); });
       tabBar.addEventListener('layer-add', (e) => { const { moduleId } = e.detail; if (!layers.find(l => l.moduleId === moduleId)) layers.push(makeLayer(moduleId, layers.length)); saveTabs(); window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId); });
       tabBar.addEventListener('layer-close', (e) => { const { layerId } = e.detail; tabBar.removeLayer(layerId); layers = layers.filter(l => l.id !== layerId); saveTabs(); if (layerId === 'layer-' + currentModuleId && layers.length > 0) window.location.href = window.__rspaceNavUrl(spaceSlug, layers[0].moduleId); });
+      tabBar.addEventListener('layers-close-all', () => { layers = []; tabBar.setLayers([]); tabBar.setAttribute('active', ''); saveTabs(); var dashUrl = window.location.hostname.endsWith('.rspace.online') ? '/' : '/' + spaceSlug; window.location.href = dashUrl; });
       tabBar.addEventListener('layer-reorder', (e) => { const { layerId, newIndex } = e.detail; const oldIdx = layers.findIndex(l => l.id === layerId); if (oldIdx === -1 || oldIdx === newIndex) return; const [moved] = layers.splice(oldIdx, 1); layers.splice(newIndex, 0, moved); layers.forEach((l, i) => l.order = i); saveTabs(); tabBar.setLayers(layers); });
     }
   </script>
diff --git a/shared/components/rstack-tab-bar.ts b/shared/components/rstack-tab-bar.ts
index bcea794d..7d83216e 100644
--- a/shared/components/rstack-tab-bar.ts
+++ b/shared/components/rstack-tab-bar.ts
@@ -15,6 +15,7 @@
  *   layer-switch  — fired when user clicks a tab { detail: { layerId, moduleId } }
  *   layer-add     — fired when user clicks + to add a layer
  *   layer-close   — fired when user closes a tab { detail: { layerId } }
+ *   layers-close-all — fired when user clicks close-all button (no detail)
  *   layer-reorder — fired on drag reorder { detail: { layerId, newIndex } }
  *   view-toggle   — fired when switching flat/stack view { detail: { mode } }
  *   flow-select   — fired when a flow is clicked in stack view { detail: { flowId } }
@@ -426,6 +427,7 @@ export class RStackTabBar extends HTMLElement {
 				</div>
 				<div class="tab-add-wrap">
 					<button class="tab-add" id="add-btn" title="Add layer">+</button>
+					${this.#layers.length > 1 ? `<button class="tab-close-all" id="close-all-btn" title="Close all tabs">✕</button>` : ""}
 					${this.#addMenuOpen ? this.#renderAddMenu() : ""}
 				</div>
 				<div class="tab-actions">
@@ -1098,6 +1100,20 @@ export class RStackTabBar extends HTMLElement {
 		addBtn?.addEventListener("click", openAppSwitcher);
 		addBtn?.addEventListener("touchend", openAppSwitcher);
 
+		// Close-all button
+		const closeAllBtn = this.#shadow.getElementById("close-all-btn");
+		if (closeAllBtn) {
+			const handleCloseAll = (e: Event) => {
+				e.stopPropagation();
+				e.preventDefault();
+				const count = this.#layers.length;
+				if (!confirm(`Close all ${count} rApp tabs?`)) return;
+				this.dispatchEvent(new CustomEvent("layers-close-all", { bubbles: true }));
+			};
+			closeAllBtn.addEventListener("click", handleCloseAll);
+			closeAllBtn.addEventListener("touchend", handleCloseAll);
+		}
+
 		// Add menu items — click + touch support
 		this.#shadow.querySelectorAll<HTMLElement>(".add-menu-item").forEach(item => {
 			const handleSelect = (e: Event) => {
@@ -1613,6 +1629,8 @@ const STYLES = `
 /* ── Add button ── */
 
 .tab-add-wrap {
+  display: flex;
+  align-items: center;
   position: relative;
   flex-shrink: 0;
   margin-left: 2px;
@@ -1642,6 +1660,31 @@ const STYLES = `
   background: var(--rs-bg-hover);
   color: var(--rs-text-primary);
 }
+.tab-close-all {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 4px 8px;
+  min-height: 44px;
+  border: none;
+  border-radius: 6px 6px 0 0;
+  background: transparent;
+  color: var(--rs-text-muted);
+  font-size: 0.85rem;
+  cursor: pointer;
+  transition: background 0.15s, color 0.15s;
+  flex-shrink: 0;
+  -webkit-tap-highlight-color: transparent;
+  touch-action: manipulation;
+  white-space: nowrap;
+  user-select: none;
+  opacity: 0.6;
+}
+.tab-close-all:hover, .tab-close-all:active {
+  background: rgba(239,68,68,0.15);
+  color: #ef4444;
+  opacity: 1;
+}
 
 /* ── Add menu ── */