Move sidebar scrollbar to left side

Added direction: rtl to sidebar to position scrollbar on left.
Child elements reset to direction: ltr to maintain normal text flow.

This creates a more intuitive layout with the scrollbar between
the sidebar and main content rather than at the edge.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

kjvstudy_org/templates/base.html

@@ -192,6 +192,11 @@
             z-index: 100;
             border-right: 1px solid var(--border-color);
             box-shadow: 2px 0 8px rgba(0, 0, 0, 0.03);
+            direction: rtl;
+        }
+
+        .nav-sidebar > * {
+            direction: ltr;
         }
 
         .nav-sidebar::-webkit-scrollbar {