Implement multi-scheme animation name mapper for Owen Animation System

- Added AnimationNameMapper class to handle conversion between different animation naming schemes (legacy, artist, hierarchical, semantic).
- Included methods for initialization, pattern matching, conversion, and validation of animation names.
- Developed comprehensive unit tests for the animation name converter and demo pages using Playwright.
- Created a Vite configuration for the demo application, including asset handling and optimization settings.
- Enhanced the demo with features for batch conversion, performance metrics, and responsive design.

demo/styles/main.css

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+/* Owen Animation System Demo - Main Styles */
+
+/* CSS Variables for consistent theming */
+:root {
+  --primary-color: #2563eb;
+  --primary-hover: #1d4ed8;
+  --secondary-color: #64748b;
+  --accent-color: #0ea5e9;
+  --success-color: #10b981;
+  --warning-color: #f59e0b;
+  --error-color: #ef4444;
+
+  --bg-primary: #ffffff;
+  --bg-secondary: #f8fafc;
+  --bg-tertiary: #f1f5f9;
+  --text-primary: #1e293b;
+  --text-secondary: #475569;
+  --text-muted: #94a3b8;
+
+  --border-color: #e2e8f0;
+  --border-radius: 8px;
+  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
+  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
+  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
+
+  --font-family:
+    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+  --font-mono:
+    "JetBrains Mono", "Fira Code", Consolas, "Courier New", monospace;
+}
+
+/* Dark mode variables */
+@media (prefers-color-scheme: dark) {
+  :root {
+    --bg-primary: #0f172a;
+    --bg-secondary: #1e293b;
+    --bg-tertiary: #334155;
+    --text-primary: #f1f5f9;
+    --text-secondary: #cbd5e1;
+    --text-muted: #64748b;
+    --border-color: #334155;
+  }
+}
+
+/* Reset and base styles */
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  font-family: var(--font-family);
+  line-height: 1.6;
+  color: var(--text-primary);
+  background-color: var(--bg-primary);
+  transition: background-color 0.3s ease;
+}
+
+/* Container */
+.container {
+  max-width: 1200px;
+  margin: 0 auto;
+  padding: 0 1rem;
+}
+
+/* Header */
+.demo-header {
+  background: var(--bg-secondary);
+  border-bottom: 1px solid var(--border-color);
+  padding: 1rem 0;
+  position: sticky;
+  top: 0;
+  z-index: 100;
+}
+
+.demo-header .container {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.logo {
+  display: flex;
+  flex-direction: column;
+  line-height: 1.2;
+}
+
+.logo-text {
+  font-size: 1.5rem;
+  font-weight: 700;
+  color: var(--primary-color);
+}
+
+.logo-subtitle {
+  font-size: 0.875rem;
+  color: var(--text-secondary);
+  font-weight: 500;
+}
+
+.demo-nav {
+  display: flex;
+  gap: 2rem;
+}
+
+.nav-link {
+  text-decoration: none;
+  color: var(--text-secondary);
+  font-weight: 500;
+  padding: 0.5rem 1rem;
+  border-radius: var(--border-radius);
+  transition: all 0.2s ease;
+}
+
+.nav-link:hover {
+  color: var(--primary-color);
+  background-color: var(--bg-tertiary);
+}
+
+.nav-link.active {
+  color: var(--primary-color);
+  background-color: var(--primary-color);
+  color: white;
+}
+
+/* Buttons */
+.btn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0.75rem 1.5rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+  border: none;
+  border-radius: var(--border-radius);
+  cursor: pointer;
+  text-decoration: none;
+  transition: all 0.2s ease;
+  gap: 0.5rem;
+}
+
+.btn-primary {
+  background-color: var(--primary-color);
+  color: white;
+}
+
+.btn-primary:hover {
+  background-color: var(--primary-hover);
+}
+
+.btn-secondary {
+  background-color: var(--bg-tertiary);
+  color: var(--text-primary);
+  border: 1px solid var(--border-color);
+}
+
+.btn-secondary:hover {
+  background-color: var(--bg-secondary);
+}
+
+.btn-small {
+  padding: 0.5rem 1rem;
+  font-size: 0.8rem;
+}
+
+.btn:disabled {
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* Form elements */
+input,
+select,
+textarea {
+  width: 100%;
+  padding: 0.75rem;
+  border: 1px solid var(--border-color);
+  border-radius: var(--border-radius);
+  background-color: var(--bg-primary);
+  color: var(--text-primary);
+  font-size: 0.875rem;
+  transition: border-color 0.2s ease;
+}
+
+input:focus,
+select:focus,
+textarea:focus {
+  outline: none;
+  border-color: var(--primary-color);
+  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
+}
+
+label {
+  display: block;
+  margin-bottom: 0.5rem;
+  font-weight: 500;
+  color: var(--text-secondary);
+}
+
+/* Cards */
+.card {
+  background: var(--bg-primary);
+  border: 1px solid var(--border-color);
+  border-radius: var(--border-radius);
+  padding: 1.5rem;
+  box-shadow: var(--shadow-sm);
+}
+
+/* Grid layouts */
+.grid {
+  display: grid;
+  gap: 1.5rem;
+}
+
+.grid-2 {
+  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
+}
+
+.grid-3 {
+  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+}
+
+.grid-4 {
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+}
+
+/* Code blocks */
+pre {
+  background: var(--bg-secondary);
+  border: 1px solid var(--border-color);
+  border-radius: var(--border-radius);
+  padding: 1rem;
+  overflow-x: auto;
+  font-family: var(--font-mono);
+  font-size: 0.875rem;
+  line-height: 1.5;
+}
+
+code {
+  font-family: var(--font-mono);
+  font-size: 0.875rem;
+  background: var(--bg-tertiary);
+  padding: 0.125rem 0.25rem;
+  border-radius: 0.25rem;
+}
+
+pre code {
+  background: none;
+  padding: 0;
+}
+
+/* Utility classes */
+.text-center {
+  text-align: center;
+}
+.text-left {
+  text-align: left;
+}
+.text-right {
+  text-align: right;
+}
+
+.mb-1 {
+  margin-bottom: 0.25rem;
+}
+.mb-2 {
+  margin-bottom: 0.5rem;
+}
+.mb-3 {
+  margin-bottom: 1rem;
+}
+.mb-4 {
+  margin-bottom: 1.5rem;
+}
+.mb-5 {
+  margin-bottom: 2rem;
+}
+
+.mt-1 {
+  margin-top: 0.25rem;
+}
+.mt-2 {
+  margin-top: 0.5rem;
+}
+.mt-3 {
+  margin-top: 1rem;
+}
+.mt-4 {
+  margin-top: 1.5rem;
+}
+.mt-5 {
+  margin-top: 2rem;
+}
+
+.p-1 {
+  padding: 0.25rem;
+}
+.p-2 {
+  padding: 0.5rem;
+}
+.p-3 {
+  padding: 1rem;
+}
+.p-4 {
+  padding: 1.5rem;
+}
+.p-5 {
+  padding: 2rem;
+}
+
+.hidden {
+  display: none;
+}
+.visible {
+  display: block;
+}
+
+/* Animation classes */
+.fade-in {
+  animation: fadeIn 0.3s ease-in-out;
+}
+
+.slide-up {
+  animation: slideUp 0.3s ease-out;
+}
+
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+@keyframes slideUp {
+  from {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+/* Loading spinner */
+.spinner {
+  width: 24px;
+  height: 24px;
+  border: 2px solid var(--border-color);
+  border-top: 2px solid var(--primary-color);
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+  0% {
+    transform: rotate(0deg);
+  }
+  100% {
+    transform: rotate(360deg);
+  }
+}
+
+/* Progress bar */
+.progress-bar {
+  width: 100%;
+  height: 8px;
+  background-color: var(--bg-tertiary);
+  border-radius: 4px;
+  overflow: hidden;
+}
+
+.progress-fill {
+  height: 100%;
+  background-color: var(--primary-color);
+  transition: width 0.3s ease;
+  width: 0%;
+}
+
+/* Footer */
+.demo-footer {
+  background: var(--bg-secondary);
+  border-top: 1px solid var(--border-color);
+  padding: 2rem 0;
+  margin-top: 4rem;
+}
+
+.footer-content {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+  gap: 2rem;
+  margin-bottom: 2rem;
+}
+
+.footer-section h4 {
+  color: var(--text-primary);
+  margin-bottom: 1rem;
+  font-size: 1rem;
+}
+
+.footer-section ul {
+  list-style: none;
+  padding: 0;
+}
+
+.footer-section li {
+  margin-bottom: 0.5rem;
+}
+
+.footer-section a {
+  color: var(--text-secondary);
+  text-decoration: none;
+  transition: color 0.2s ease;
+}
+
+.footer-section a:hover {
+  color: var(--primary-color);
+}
+
+.footer-bottom {
+  text-align: center;
+  padding-top: 2rem;
+  border-top: 1px solid var(--border-color);
+  color: var(--text-muted);
+  font-size: 0.875rem;
+}
+
+/* Responsive design */
+@media (max-width: 768px) {
+  .container {
+    padding: 0 0.75rem;
+  }
+
+  .demo-header .container {
+    flex-direction: column;
+    gap: 1rem;
+  }
+
+  .demo-nav {
+    gap: 1rem;
+  }
+
+  .grid-2,
+  .grid-3,
+  .grid-4 {
+    grid-template-columns: 1fr;
+  }
+
+  .btn {
+    width: 100%;
+    justify-content: center;
+  }
+}
+
+@media (max-width: 480px) {
+  .demo-nav {
+    flex-wrap: wrap;
+    gap: 0.5rem;
+  }
+
+  .nav-link {
+    padding: 0.375rem 0.75rem;
+    font-size: 0.875rem;
+  }
+
+  .footer-content {
+    grid-template-columns: 1fr;
+    gap: 1.5rem;
+  }
+}