Fix sidebar toggle button width to accommodate text

Change button from fixed 24px width to auto width with padding,
allowing "Sidebar" text to fit properly without overflow.

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

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

kjvstudy_org/templates/base.html

@@ -372,8 +372,10 @@
         }
 
         .sidebar-toggle-btn {
-            width: 24px;
+            width: auto;
+            min-width: 24px;
             height: 24px;
+            padding: 0 0.5rem;
             cursor: pointer;
             background: transparent;
             border: 1px solid var(--border-color-darker);