fix: resolve did:dht compilation errors

- Simplify DHT encoding: use JSON instead of DNS packets (drop simple-dns)
- Fix mainline crate API: SigningKey takes 32 bytes, get_mutable returns Result
- Add missing dht_did field to IdentityRecord constructor
- Store DID Document as JSON in DHT (DNS encoding deferred)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/views/Dashboard.vue

@@ -82,7 +82,8 @@
               :key="item.path"
               :to="item.path"
               class="sidebar-nav-item flex items-center gap-3 px-4 py-3 rounded-lg text-white/80 hover:bg-white/10 hover:text-white transition-colors"
-              exact-active-class="nav-tab-active"
+              :class="{ 'nav-tab-active': item.isCombined && (route.path.includes('/apps') || route.path.includes('/marketplace')) }"
+              :exact-active-class="item.isCombined ? undefined : 'nav-tab-active'"
               :style="{ '--nav-stagger': idx }"
             >
               <svg class="w-5 h-5" aria-hidden="true" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -278,8 +279,8 @@
                   :class="[
                     'px-4 pt-4 md:pt-8 md:px-8 overflow-y-auto h-full',
                     needsMobileBackButtonSpace
-                      ? 'pb-[calc(var(--mobile-tab-bar-height,_72px)+96px)] md:pb-8'
-                      : 'pb-4 md:pb-8'
+                      ? 'pb-[calc(var(--mobile-tab-bar-height,_72px)+96px)] md:pb-24'
+                      : 'pb-[calc(var(--mobile-tab-bar-height,_72px)+48px)] md:pb-24'
                   ]"
                   :style="mobileTabPaddingTop ? { paddingTop: (mobileTabPaddingTop + 16) + 'px' } : undefined"
                 >
@@ -649,8 +650,7 @@ interface NavItem {
 
 const gamerDesktopNav: NavItem[] = [
   { path: '/dashboard', label: 'Home', icon: 'home' },
-  { path: '/dashboard/apps', label: 'My Apps', icon: 'apps' },
-  { path: '/dashboard/marketplace', label: 'App Store', icon: 'marketplace' },
+  { path: '/dashboard/apps', label: 'Apps', icon: 'apps', isCombined: true },
   { path: '/dashboard/cloud', label: 'Cloud', icon: 'cloud' },
   { path: '/dashboard/server', label: 'Network', icon: 'server' },
   { path: '/dashboard/web5', label: 'Web5', icon: 'web5' },
@@ -869,15 +869,28 @@ function getTransitionName(currentRoute: RouteLocationNormalizedLoaded) {
   return transitionName
 }
 
-// Health notifications from WebSocket data
+// Health notifications from WebSocket data — deduplicated by container name
 const dismissedNotifications = ref<Set<string>>(new Set())
 
 const healthNotifications = computed(() => {
   const notifs = store.data?.notifications ?? []
-  return notifs.filter(n => !dismissedNotifications.value.has(n.id)).slice(-5)
+  const visible = notifs.filter(n => !dismissedNotifications.value.has(n.id))
+  // Deduplicate: keep only the latest notification per container/title
+  const seen = new Map<string, typeof visible[0]>()
+  for (const n of visible) {
+    seen.set(n.title, n)
+  }
+  return [...seen.values()].slice(-3)
 })
 
 function dismissNotification(id: string) {
+  // Dismiss all notifications with the same title (container name)
+  const notif = (store.data?.notifications ?? []).find(n => n.id === id)
+  if (notif) {
+    for (const n of store.data?.notifications ?? []) {
+      if (n.title === notif.title) dismissedNotifications.value.add(n.id)
+    }
+  }
   dismissedNotifications.value.add(id)
 }
 </script>