Debug and fix board dashboard hamburger menu visibility

- Added debug logging to track toggleDrawer function calls
- Added explicit CSS to ensure hamburger button is visible
- Added mounted hook logging to verify initial state
- Ensured button has proper z-index and display properties

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

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

assets/scss/main.scss

@@ -950,6 +950,16 @@ $screen-xl: 1280px;
 
 // Keep hamburger menu visible - removed the hiding CSS
 
+// Ensure hamburger button is visible and clickable
+.glass-app-bar {
+  .v-btn:first-child {
+    display: flex !important;
+    visibility: visible !important;
+    opacity: 1 !important;
+    z-index: 10 !important;
+  }
+}
+
 // Animation classes
 .animated-entrance {
   animation: slide-up 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both !important;