release(v1.7.33-alpha): onboarding/login UX fixes + PWA cache bust

- useOnboarding.ts: prefer the backend over localStorage when checking
  onboarding completion. The old order (localStorage first) meant any
  browser that had ever onboarded a node would treat every new fresh
  node as already-onboarded and skip the wizard, dumping the user
  straight at the inline set-password form. Backend is now authoritative;
  localStorage stays as the offline fallback.
- OnboardingWrapper.vue: skip the intro video on `/login` once
  `neode_onboarding_complete` is set. Returning logged-out users now
  get the static lock-screen background + glitch overlay instead of
  replaying the full intro on every logout.
- RootRedirect.vue: when the health check fails, only show the full
  BootScreen if the node was never onboarded. For already-onboarded
  nodes (i.e. an OTA-update blip), keep the spinner and poll the
  health endpoint every 2s for up to 60s before falling back to the
  boot screen. Fixes the "fake boot loader" / "server starting up"
  screens flashing on every successful update.
- loginTransition store: new `justCompletedOnboarding` flag distinct
  from `justLoggedIn`. Set true only by the inline setup-password
  flow (handleSetup). Dashboard.vue branches on it: full glitch+zoom
  reveal for the post-onboarding entry, quick zoom + welcome typing
  on every other login (no triple glitch flashes, ~1.2s vs 8s).
- vite.config.ts: bump assets cache from `assets-cache-v2` to
  `assets-cache-v3` so service workers running the previous bundle
  invalidate their cache and pick up the new UI cleanly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

neode-ui/src/views/OnboardingWrapper.vue

@@ -86,9 +86,23 @@ const videoBackgroundRoutes = ['/onboarding/intro', '/login']
 // Login uses video when coming from splash, or static + glitch when direct
 const isLoginRoute = computed(() => route.path === '/login')
 
+// True once onboarding is complete. Used to skip the intro video on
+// the /login route so that returning (logged-out) users go straight
+// to the screensaver-style static + glitch background instead of
+// replaying the full intro every time.
+const onboardingDone = computed(() => {
+  try {
+    return localStorage.getItem('neode_onboarding_complete') === '1'
+  } catch {
+    return false
+  }
+})
+
 // Check if current route should use video background
 const useVideoBackground = computed(() => {
-  return videoBackgroundRoutes.includes(route.path)
+  if (!videoBackgroundRoutes.includes(route.path)) return false
+  if (route.path === '/login' && onboardingDone.value) return false
+  return true
 })
 
 // Map each route to a specific background image