adsense verification, remove latest sales table, add new search mechanic (weight, synonyms), fix low volatility (NaN%)

src/layouts/Main.astro

@@ -16,6 +16,7 @@ const { title } = Astro.props;
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="htmx-config" content='{"historyCacheSize": 50}'/>
+    <meta name="google-adsense-account" content="ca-pub-1140571217687341">
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <link rel="icon" href="/favicon.ico" />
     <title>{title}</title>
@@ -42,4 +43,4 @@ const { title } = Astro.props;
     <script src="../assets/js/main.js"></script>
     <script>import '../assets/js/priceChart.js';</script>
   </body>
-</html>
+</html>