Fix sidebar width and profile section design issues

- Increased collapsed sidebar width from 80px to 100px for better icon visibility
- Updated rail-width prop to 100 in all three layouts (admin, board, member)
- Fixed profile section avatar sizing - now uses size 32 in collapsed mode
- Simplified menu button to always show vertical dots icon
- Improved spacing and alignment in profile section for both states
- Removed conditional button variants for cleaner, consistent design

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

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

assets/scss/main.scss

@@ -940,7 +940,7 @@ $screen-xl: 1280px;
   
   // Ensure rail mode uses correct width - increased to fit icons
   &.v-navigation-drawer--rail {
-    width: 80px !important;
+    width: 100px !important;
   }
   
   &__content {