Refactor search group label for clarity and update heatmap zmin value for improved visualization accuracy.

index.html

@@ -74,7 +74,7 @@
         import { sentences } from './sentences.js';
         document.getElementById("input").value = sentences.join("\n");
     </script>
-    <label for="search-group-input" style="margin-top:10px;display:block;">Search Group (optional, overrides group with ##search):</label>
+    <label for="search-group-input" style="margin-top:10px;display:block;">Search Group:</label>
     <textarea id="search-group-input" placeholder="Paste or type search group lines here..."></textarea>
     <div class="control-group">
         <label for="kmeans-k">Clusters:</label>

plotting.js

@@ -1,5 +1,5 @@
 export function plotHeatmap(sim, xLabels, yLabels) {
-    const data = [{ z: sim, type: "heatmap", colorscale: "Viridis", zmin: 0.7, zmax: 1, x: xLabels, y: yLabels }];
+    const data = [{ z: sim, type: "heatmap", colorscale: "Viridis", zmin: 0.8, zmax: 1, x: xLabels, y: yLabels }];
     Plotly.newPlot("plot-heatmap", data, {
         xaxis: { title: "Group" },
         yaxis: { title: "Group" },