feat: Add Library Visualizer (Slots & Drives) to Web UI

dist/adastra-vtl-installer/web-ui/style.css

@@ -440,3 +440,93 @@ main.container {
         font-size: 0.875rem;
     }
 }
+
+/* Library Visualizer Styles */
+.library-viz {
+    display: flex;
+    flex-direction: column;
+    gap: 1.5rem;
+}
+
+.viz-section h4 {
+    margin-bottom: 0.75rem;
+    color: var(--text-secondary);
+    text-transform: uppercase;
+    font-size: 0.875rem;
+    letter-spacing: 0.05em;
+}
+
+.viz-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
+    gap: 0.75rem;
+}
+
+.viz-slot {
+    background: var(--dark-bg);
+    border: 1px solid var(--border-color);
+    border-radius: 0.5rem;
+    padding: 0.75rem 0.5rem;
+    text-align: center;
+    transition: all 0.2s;
+    cursor: default;
+    position: relative;
+    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
+}
+
+.viz-slot:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
+}
+
+.viz-slot.full {
+    background: rgba(16, 185, 129, 0.1);
+    border-color: var(--success-color);
+}
+
+.viz-slot .slot-icon {
+    font-size: 1.5rem;
+    margin-bottom: 0.25rem;
+    display: block;
+}
+
+.viz-slot .slot-id {
+    font-size: 0.75rem;
+    color: var(--text-secondary);
+    margin-bottom: 0.25rem;
+    font-weight: 500;
+}
+
+.viz-slot .tape-label {
+    font-size: 0.75rem;
+    font-weight: 600;
+    font-family: 'Courier New', monospace;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    color: var(--text-secondary);
+}
+
+.viz-slot.full .tape-label {
+    color: var(--success-color);
+}
+
+.viz-slot.empty .tape-label {
+    color: var(--text-secondary);
+    font-style: italic;
+    opacity: 0.5;
+}
+
+/* Drive specific styling */
+.drive-slot {
+    border-color: var(--info-color);
+}
+
+.drive-slot.full {
+    background: rgba(59, 130, 246, 0.1);
+    border-color: var(--info-color);
+}
+
+.drive-slot.full .tape-label {
+    color: var(--info-color);
+}