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/vite.config.ts

@@ -94,7 +94,7 @@ export default defineConfig({
             urlPattern: /\/assets\/.*/i,
             handler: 'CacheFirst',
             options: {
-              cacheName: 'assets-cache-v2',
+              cacheName: 'assets-cache-v3',
               expiration: {
                 maxEntries: 100,
                 maxAgeSeconds: 60 * 60 * 24 * 30 // 30 days