release(v1.7.29-alpha): VPS as default app registry + settings UI

- New Settings → App registries page (/dashboard/settings/registries)
  that mirrors the update-mirrors experience: list of configured
  registries, test reachability, set primary, add/remove. New
  registry.set-primary RPC; existing registry.{list,add,remove,test}
  reused.
- Default RegistryConfig flipped: VPS (23.182.128.160:3000/lfg2025) is
  now Server 1 (primary), tx1138 is Server 2 (fallback).
- Install pipeline now rewrites the first pull to the primary registry
  URL before attempting it. Before this, installs always hit whichever
  registry the image was hardcoded to, so changing the primary didn't
  actually affect where images came from. On failure, the existing
  fallback walk skips the primary (already tried) and walks the rest.
- App catalog proxy UPSTREAMS order flipped so the catalog follows the
  same VPS-first rule.
- Reboot overlay: animated "a" logo now sits in the center of the ring
  (matches the screensaver composition). Extracted the logo-wrapper
  pattern inline.

7/7 registry tests pass.

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

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

@@ -0,0 +1,27 @@
+<script setup lang="ts">
+import { RouterLink } from 'vue-router'
+</script>
+
+<template>
+  <!-- App Registries Section -->
+  <div class="glass-card px-6 py-6 mb-6">
+    <div class="flex items-center justify-between">
+      <div>
+        <h2 class="text-xl font-semibold text-white/96">App registries</h2>
+        <p class="text-sm text-white/60 mt-1">
+          Choose the primary registry for app installs and add mirrors for fallback.
+        </p>
+      </div>
+      <RouterLink
+        to="/dashboard/settings/registries"
+        class="glass-button px-4 py-2 rounded-lg text-sm flex items-center gap-2"
+      >
+        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
+            d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1M12 12V3m0 0l-4 4m4-4l4 4" />
+        </svg>
+        Manage registries
+      </RouterLink>
+    </div>
+  </div>
+</template>