feat: Update tree branch styling for improved visual hierarchy and clarity

Author: Ashjha75

index.js

@@ -899,9 +899,8 @@
         for (let i = 0; i < parents.length; ++i) {
             lines += `<span class="tree-vline" style="visibility:${parents[i] ? 'visible' : 'hidden'}"></span>`;
         }
-        // For the current node, add a connector (├ or └)
         if (parents.length > 0) {
-            lines += `<span class="tree-vline tree-branch" style="height:22px;${isLast ? 'border-left:2px solid transparent;' : ''}"></span>`;
+            lines += `<span class="tree-branch${isLast ? ' tree-branch-last' : ''}"></span>`;
         }
         return lines;
     }

style.css

@@ -73,6 +73,9 @@
     top: 2px;
     left: -2px;
 }
+.tree-branch-last {
+    border-left: 2px solid transparent !important;
+}
 .tree-arrow {
     width: 14px;
     height: 14px;