Initial commit - Angular library: ui-essentials

🎯 Implementation Complete!

This library has been extracted from the monorepo and is ready for Git submodule distribution.

Features:
- Standardized SCSS imports (no relative paths)
- Optimized public-api.ts exports
- Independent Angular library structure
- Ready for consumer integration as submodule

🚀 Generated with Claude Code (https://claude.ai/code)

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

src/lib/components/data-display/list/list-examples.component.scss

@@ -0,0 +1,234 @@
+@use 'ui-design-system/src/styles/semantic/index' as *;
+
+// Tokens available globally via main application styles
+
+// ==========================================================================
+// LIST EXAMPLES COMPONENT
+// ==========================================================================
+// Demonstration component showcasing all list variants and capabilities
+// ==========================================================================
+
+.list-examples {
+  padding: $semantic-spacing-component-xl;
+  max-width: 1200px;
+  margin: 0 auto;
+  
+  h2 {
+    font-size: 2rem;
+    font-weight: 600;
+    color: $semantic-color-text-primary;
+    margin-bottom: $semantic-spacing-layout-lg;
+    text-align: center;
+  }
+}
+
+.example-section {
+  margin-bottom: $semantic-spacing-layout-xl;
+  
+  h3 {
+    font-size: 1.5rem;
+    font-weight: 500;
+    color: $semantic-color-text-primary;
+    margin-bottom: $semantic-spacing-component-xl;
+    padding-bottom: $semantic-spacing-component-sm;
+    border-bottom: 2px solid $semantic-color-border-secondary;
+  }
+}
+
+.example-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
+  gap: $semantic-spacing-component-xl;
+  margin-bottom: $semantic-spacing-layout-md;
+}
+
+.example-item {
+  h4 {
+    font-size: 1rem;
+    font-weight: 500;
+    color: $semantic-color-text-secondary;
+    margin-bottom: $semantic-spacing-component-md;
+    text-align: center;
+  }
+}
+
+.example-single {
+  max-width: 600px;
+  margin: 0 auto;
+}
+
+// ==========================================================================
+// TRAILING SLOT COMPONENTS
+// ==========================================================================
+
+.action-button {
+  background: none;
+  border: none;
+  color: $semantic-color-text-tertiary;
+  cursor: pointer;
+  padding: $semantic-spacing-component-xs;
+  border-radius: $semantic-border-radius-sm;
+  transition: all 0.15s ease-in-out;
+  
+  &:hover {
+    background-color: $semantic-color-surface-interactive;
+    color: $semantic-color-text-secondary;
+  }
+  
+  &:focus {
+    outline: 2px solid $semantic-color-border-focus;
+    outline-offset: 2px;
+  }
+  
+  i {
+    font-size: 14px;
+  }
+}
+
+.timestamp {
+  font-size: 0.75rem;
+  color: $semantic-color-text-tertiary;
+  font-weight: 400;
+}
+
+.play-button {
+  width: 32px;
+  height: 32px;
+  border-radius: 50%;
+  background-color: $semantic-color-interactive-primary;
+  color: $semantic-color-on-brand-primary;
+  border: none;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.15s ease-in-out;
+  
+  &:hover {
+    transform: scale(1.05);
+    box-shadow: $semantic-shadow-elevation-1;
+  }
+  
+  &:focus {
+    outline: 2px solid $semantic-color-border-focus;
+    outline-offset: 2px;
+  }
+  
+  i {
+    font-size: 12px;
+    margin-left: 2px; // Optical alignment for play icon
+  }
+}
+
+.rating {
+  display: flex;
+  align-items: center;
+  gap: $semantic-spacing-micro-tight;
+  color: $semantic-color-warning;
+  font-size: 0.875rem;
+  font-weight: 500;
+  
+  i {
+    font-size: 14px;
+  }
+}
+
+.select-button {
+  background-color: $semantic-color-interactive-primary;
+  color: $semantic-color-on-brand-primary;
+  border: none;
+  padding: $semantic-spacing-component-xs $semantic-spacing-component-sm;
+  border-radius: $semantic-border-radius-sm;
+  font-size: 0.875rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.15s ease-in-out;
+  
+  &:hover {
+    background-color: $semantic-color-interactive-secondary;
+  }
+  
+  &:focus {
+    outline: 2px solid $semantic-color-border-focus;
+    outline-offset: 2px;
+  }
+}
+
+.text-success {
+  color: $semantic-color-success;
+}
+
+// ==========================================================================
+// RESPONSIVE DESIGN
+// ==========================================================================
+
+@media (max-width: 768px) {
+  .list-examples {
+    padding: $semantic-spacing-component-lg;
+    
+    h2 {
+      font-size: 1.5rem;
+    }
+  }
+  
+  .example-grid {
+    grid-template-columns: 1fr;
+    gap: $semantic-spacing-component-lg;
+  }
+  
+  .example-section {
+    margin-bottom: $semantic-spacing-layout-md;
+    
+    h3 {
+      font-size: 1.25rem;
+    }
+  }
+}
+
+@media (max-width: 480px) {
+  .list-examples {
+    padding: $semantic-spacing-component-md;
+  }
+  
+  .example-grid {
+    gap: $semantic-spacing-component-md;
+  }
+}
+
+// ==========================================================================
+// ACCESSIBILITY ENHANCEMENTS
+// ==========================================================================
+
+// Focus indicators for better keyboard navigation
+.list-examples {
+  button:focus,
+  .action-button:focus,
+  .play-button:focus,
+  .select-button:focus {
+    outline: 2px solid $semantic-color-border-focus;
+    outline-offset: 2px;
+    border-radius: $semantic-border-radius-sm;
+  }
+}
+
+// High contrast mode support
+@media (prefers-contrast: high) {
+  .action-button,
+  .play-button,
+  .select-button {
+    border: 1px solid $semantic-color-border-primary;
+  }
+}
+
+// Reduced motion support
+@media (prefers-reduced-motion: reduce) {
+  .action-button,
+  .play-button,
+  .select-button {
+    transition: none;
+  }
+  
+  .play-button:hover {
+    transform: none;
+  }
+}