chore: touch 404.html to bust CDN caches for subpage SPA fallbacks

Author: qectorlab

404.html

@@ -28,7 +28,7 @@
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <title>QECTOR · Production-Grade Quantum Error Correction Decoding for Python</title>
-    <!-- Early SPA redirect for GitHub Pages: set before bundle loads so React Router can restore path even on direct /subpage hits -->
+    <!-- Early SPA redirect for GitHub Pages: set before bundle loads so React Router can restore path even on direct /subpage hits. Cache bust 2026-07-08 -->
     <script>
       (function() {
         try {

source/public/404.html

@@ -28,7 +28,7 @@
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <title>QECTOR · Production-Grade Quantum Error Correction Decoding for Python</title>
-    <!-- Early SPA redirect for GitHub Pages: set before bundle loads so React Router can restore path even on direct /subpage hits -->
+    <!-- Early SPA redirect for GitHub Pages: set before bundle loads so React Router can restore path even on direct /subpage hits. Cache bust 2026-07-08 -->
     <script>
       (function() {
         try {