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>

layouts/board.vue

@@ -478,6 +478,9 @@ const memberData = computed<Member | null>(() => sessionData.value?.member || nu
 
 // Load board-specific notifications
 onMounted(async () => {
+  // Debug initial state
+  console.log('Board layout mounted - drawer:', drawer.value, 'miniVariant:', miniVariant.value);
+  
   try {
     const [notificationsRes, applicationsRes] = await Promise.all([
       $fetch('/api/board/notifications/count'),
@@ -492,7 +495,9 @@ onMounted(async () => {
 });
 
 const toggleDrawer = () => {
+  console.log('Board toggleDrawer called, current miniVariant:', miniVariant.value);
   miniVariant.value = !miniVariant.value;
+  console.log('Board miniVariant after toggle:', miniVariant.value);
 };
 
 const toggleSearch = () => {