Add comprehensive UI component expansion

- Add new components: enhanced-table, fab-menu, icon-button, snackbar, select, tag-input, bottom-navigation, stepper, command-palette, floating-toolbar, transfer-list
- Refactor table-actions and select components
- Update component styles and exports
- Add corresponding demo components

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

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

projects/demo-ui-essentials/src/app/demos/snackbar-demo/snackbar-demo.component.scss

@@ -0,0 +1,90 @@
+@use '../../../../../shared-ui/src/styles/semantic/index' as *;
+
+.demo-container {
+  padding: $semantic-spacing-layout-section-md;
+  max-width: 1200px;
+  margin: 0 auto;
+}
+
+.demo-section {
+  margin-bottom: $semantic-spacing-layout-section-lg;
+  
+  h3 {
+    font-family: map-get($semantic-typography-heading-h3, font-family);
+    font-size: map-get($semantic-typography-heading-h3, font-size);
+    font-weight: map-get($semantic-typography-heading-h3, font-weight);
+    line-height: map-get($semantic-typography-heading-h3, line-height);
+    color: $semantic-color-text-primary;
+    margin-bottom: $semantic-spacing-content-heading;
+  }
+}
+
+.demo-row {
+  display: flex;
+  align-items: center;
+  gap: $semantic-spacing-component-md;
+  flex-wrap: wrap;
+}
+
+.demo-button {
+  padding: $semantic-spacing-interactive-button-padding-y $semantic-spacing-interactive-button-padding-x;
+  background: $semantic-color-surface-primary;
+  border: $semantic-border-width-1 solid $semantic-color-border-primary;
+  border-radius: $semantic-border-button-radius;
+  cursor: pointer;
+  transition: all $semantic-motion-duration-fast $semantic-motion-easing-ease;
+  
+  font-family: map-get($semantic-typography-button-medium, font-family);
+  font-size: map-get($semantic-typography-button-medium, font-size);
+  font-weight: map-get($semantic-typography-button-medium, font-weight);
+  line-height: map-get($semantic-typography-button-medium, line-height);
+  color: $semantic-color-text-primary;
+  
+  &:hover {
+    background: $semantic-color-surface-secondary;
+    box-shadow: $semantic-shadow-button-hover;
+  }
+  
+  &:focus-visible {
+    outline: 2px solid $semantic-color-focus;
+    outline-offset: 2px;
+  }
+  
+  &--primary {
+    background: $semantic-color-primary;
+    color: $semantic-color-on-primary;
+    border-color: $semantic-color-primary;
+    
+    &:hover {
+      background: $semantic-color-primary;
+      opacity: $semantic-opacity-hover;
+    }
+  }
+  
+  &--warning {
+    background: $semantic-color-warning;
+    color: $semantic-color-on-warning;
+    border-color: $semantic-color-warning;
+    
+    &:hover {
+      background: $semantic-color-warning;
+      opacity: $semantic-opacity-hover;
+    }
+  }
+  
+  &--danger {
+    background: $semantic-color-danger;
+    color: $semantic-color-on-danger;
+    border-color: $semantic-color-danger;
+    
+    &:hover {
+      background: $semantic-color-danger;
+      opacity: $semantic-opacity-hover;
+    }
+  }
+}
+
+// Static snackbars for demo purposes
+.demo-row ui-snackbar {
+  margin-bottom: $semantic-spacing-component-sm;
+}