fix: collapse toggle as first sidebar item, realtime stays in glass bar

Collapse icon at top of sidebar (aligned with all icons). Glass top
bar now only shows realtime indicator on the right.

components/dashboard/DashboardShell.tsx

@@ -38,16 +38,7 @@ function GlassTopBar({ siteId }: { siteId: string }) {
   }, [realtime])
 
   return (
-    <div className="hidden md:flex items-center justify-between h-10 shrink-0 pr-3">
-      {/* Collapse toggle — negative margin to align with sidebar icons */}
-      <button
-        onClick={toggle}
-        className="flex items-center justify-center w-10 h-10 -ml-[52px] text-neutral-400 hover:text-white rounded-lg hover:bg-white/[0.06] transition-colors"
-        aria-label={collapsed ? 'Expand sidebar' : 'Collapse sidebar'}
-      >
-        <SidebarSimple className="w-[18px] h-[18px]" weight={collapsed ? 'regular' : 'fill'} />
-      </button>
-
+    <div className="hidden md:flex items-center justify-end h-10 shrink-0 px-3">
       {/* Realtime indicator */}
       {lastUpdatedRef.current != null && (
         <div className="flex items-center gap-1.5 text-xs text-neutral-500">