added qqn, updated penta lab, various site polish

Author: acharneski

.gitignore

@@ -0,0 +1,22 @@
+
+aws s3 cp --recursive ./ s3://math.cognotik.com/ \
+  --exclude "node_modules/*" \
+  --exclude "test/*" \
+  --exclude "public/*" \
+  --exclude "docs/*" \
+  --exclude "scripts/*" \
+  --exclude "package.json" \
+  --exclude "package-lock.json" \
+  --exclude "tsconfig.json" \
+  --exclude "webpack.config.js" \
+  --exclude ".git/*" \
+  --exclude "android-twa/*" \
+  --exclude "terraform/*" \
+  --exclude "demo/*" \
+  --exclude ".*/*" \
+  --exclude "*.sh" \
+  --exclude "LICENSE"
+
+aws cloudfront create-invalidation \
+  --distribution-id E2V4URD2KDRZ6N \
+  --paths "/*"

deploy.sh

@@ -2327,12 +2327,15 @@
          ============================================================ -->
     <header class="site-header">
       <div class="header-inner">
-        <div class="header-brand">
+       <a class="header-brand" href="../../index.html">
           <span class="header-logo-icon" aria-hidden="true">⟳</span>
           <span class="header-brand-name">Generator Numerics</span>
-        </div>
+       </a>
         <nav class="header-nav" aria-label="Primary navigation">
           <ul class="header-nav-list">
+           <li class="header-nav-item">
+             <a href="../../index.html" class="header-nav-link">← Home</a>
+           </li>
             <li class="header-nav-item">
               <a href="#core-inversion" class="header-nav-link">Core Idea</a>
             </li>
@@ -5203,4 +5206,4 @@ <h3 class="footer-col-title">Key Concepts</h3>
       })();
     </script>
   </body>
-</html>
+</html>