Add WebUI navigation improvements: keyboard shortcuts, hash routing, command palette, cross-entity links

- Keyboard shortcuts: Ctrl+1-4 for tab switching
- URL hash routing: #tab/subtab format with browser back/forward support
- Tab count badges: running targets and active profiles counts
- Cross-entity quick links: clickable references navigate to related cards
- Command palette (Ctrl+K): global search across all entities with keyboard navigation
- Expand/collapse all sections: buttons in sub-tab bars
- Sticky section headers: headers pin while scrolling long card grids
- Improved section filter: better styling with reset button

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/css/patterns.css

@@ -61,6 +61,27 @@
     font-size: 0.7rem;
 }
 
+.stream-card-link {
+    cursor: pointer;
+    text-decoration: none;
+    transition: background 0.2s, color 0.2s;
+}
+
+.stream-card-link:hover {
+    background: var(--primary-color);
+    color: #fff;
+}
+
+@keyframes cardHighlight {
+    0%, 100% { box-shadow: none; }
+    25%, 75% { box-shadow: 0 0 0 3px var(--primary-color); }
+}
+
+.card-highlight,
+.template-card.card-highlight {
+    animation: cardHighlight 2s ease-in-out;
+}
+
 /* Key Colors target styles */
 .kc-rect-list {
     display: flex;