feat(redesign): re-skin admin-ops/platform-admin/public views to DS (Phase D batch 4 — panel re-skin complete)

Final re-skin batch: admin ops (Console/FileManager[VueFinder preserved]/WipeCalendar/WipeHistory/Changelog/Migration), platform-admin (Dashboard/Licenses/Servers/Subscriptions/Users), public product pages (ServerInfo/StatusPage/StoreView) + PublicLayout, WarpEditor, ErrorBoundary. All logic/store/router/WebSocket/handlers preserved. Marketing views (Landing/Pricing/FAQ/HowItWorks/Roadmap/EarlyAccess + MarketingLayout) intentionally deferred to the dedicated marketing-site redesign. Build green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/components/layout/PublicLayout.vue

@@ -1,16 +1,33 @@
 <script setup lang="ts">
 import { RouterView } from 'vue-router'
+import Logo from '@/components/ds/brand/Logo.vue'
 </script>
 
 <template>
-  <div class="min-h-screen bg-neutral-950">
+  <div class="pub-shell">
     <RouterView />
 
-    <footer class="py-6 text-center text-neutral-600 text-sm border-t border-neutral-800">
-      <div class="flex items-center justify-center gap-2">
-        <img src="/logo.png" alt="Corrosion" class="h-4 w-4 opacity-60" />
-        <span>Powered by <span class="text-oxide-500 font-semibold">Corrosion</span></span>
-      </div>
+    <footer class="pub-footer">
+      <Logo :size="18" :wordmark="true" />
     </footer>
   </div>
 </template>
+
+<style scoped>
+.pub-shell {
+  min-height: 100vh;
+  background: var(--surface-canvas);
+  display: flex;
+  flex-direction: column;
+}
+
+.pub-footer {
+  margin-top: auto;
+  padding: var(--space-6) var(--space-6);
+  border-top: 1px solid var(--border-subtle);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--accent);
+}
+</style>