release(v1.7.38-alpha): onboarding auto-heal + silent returning logins + app-store trim

- auth.rs now infers onboarding-complete from setup_complete + password_hash so
  nodes stop bouncing users through the intro wizard after browser clear / update
  / reboot; the flag self-heals to disk on next check
- frontend: "backend uncertain" no longer defaults to /onboarding/intro —
  useOnboarding returns null + callers poll / retry instead of flashing the wizard
- login sounds (synthwave, welcome voice, pop, whoosh, oomph) gated by
  isFirstInstallPhase(); typing sounds unaffected
- removed FIPS app, Nostr Relay, Nostr VPN, Routstr, Penpot from catalog,
  frontend config, Rust AppMetadata + install dispatch + install_penpot_stack;
  docker/fips-ui + docker/nostr-vpn-ui + apps/penpot dirs and 5 icons deleted;
  15 image versions deleted from tx1138, .168, gitea-local registries (.160
  Gitea was 502 at release time — follow-up)
- AIUI baked into frontend release tarball via demo/aiui/; deploy-to-target
  falls back to demo/aiui/ when the AIUI sibling checkout is missing
- prebuild hook syncs app-catalog/catalog.json → public/catalog.json so the
  two copies can no longer drift (was the source of the "apps still visible"
  bug — public/ had stale data)

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

neode-ui/src/views/settings/AccountInfoSection.vue

@@ -180,6 +180,18 @@ init()
               </button>
             </div>
             <div class="overflow-y-auto flex-1 min-h-0 space-y-6 pr-1">
+              <!-- v1.7.38-alpha -->
+              <div>
+                <div class="flex items-center gap-2 mb-3">
+                  <span class="text-xs font-mono px-2 py-0.5 rounded bg-orange-500/20 text-orange-300">v1.7.38-alpha</span>
+                  <span class="text-xs text-white/40">Apr 22, 2026</span>
+                </div>
+                <div class="space-y-3 text-sm text-white/80 pl-3 border-l border-white/10">
+                  <p>Signing in is quiet now. The intro music, welcome voice, and transition sounds belong to the first-boot cinematic and only play before you've finished onboarding — every login after that is silent. Typing sounds in the search bar and on the dashboard are unaffected.</p>
+                  <p>Fixed a bug where clearing your browser cache, updating the node, or rebooting could bounce you back through the onboarding wizard even though your node was already fully set up. The node now self-heals: if your password is set, it knows you've been through onboarding and takes you straight to the login screen. No more starting over.</p>
+                  <p>Trimmed the App Store. FIPS, Nostr Relay, Nostr VPN, Routstr, and Penpot have been removed from the catalog and their container images deleted from our registries. Your node's native FIPS transport is untouched — this is just the app-store entries going away.</p>
+                </div>
+              </div>
               <!-- v1.7.37-alpha -->
               <div>
                 <div class="flex items-center gap-2 mb-3">