fix(ui): use layout-dashboard glyph for session dashboard indicator (#111975)

ui/src/components/app-sidebar-session-list.ts

@@ -146,7 +146,7 @@ export abstract class AppSidebarSessionListElement extends AppSidebarSessionNarr
                 role="img"
                 aria-label=${t("sessionsView.dashboardAvailable")}
                 title=${t("sessionsView.dashboardAvailable")}
-                >${icons.barChart}</span
+                >${icons.layoutDashboard}</span
               >`
             : nothing}
           <openclaw-viewer-facepile

ui/src/components/app-sidebar.ts

@@ -273,7 +273,7 @@ class AppSidebar extends AppSidebarSessionListElement {
               role="img"
               aria-label=${t("sessionsView.dashboardAvailable")}
               title=${t("sessionsView.dashboardAvailable")}
-              >${icons.barChart}</span
+              >${icons.layoutDashboard}</span
             >`
           : nothing}
         ${stateBadge !== nothing || approvalNeeded

ui/src/components/icons.ts

@@ -27,6 +27,14 @@ export const icons = {
       <line x1="6" x2="6" y1="20" y2="16" />
     </svg>
   `,
+  layoutDashboard: html`
+    <svg viewBox="0 0 24 24">
+      <rect width="7" height="9" x="3" y="3" rx="1" />
+      <rect width="7" height="5" x="14" y="3" rx="1" />
+      <rect width="7" height="9" x="14" y="12" rx="1" />
+      <rect width="7" height="5" x="3" y="16" rx="1" />
+    </svg>
+  `,
   coins: html`
     <svg viewBox="0 0 24 24">
       <circle cx="8" cy="8" r="6" />