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/js/features/kc-targets.js

@@ -78,11 +78,11 @@ export function createKCTargetCard(target, sourceMap, patternTemplateMap, valueS
                 </div>
             </div>
             <div class="stream-card-props">
-                <span class="stream-card-prop" title="${t('kc.source')}">📺 ${escapeHtml(sourceName)}</span>
-                <span class="stream-card-prop" title="${t('kc.pattern_template')}">📄 ${escapeHtml(patternName)}</span>
+                <span class="stream-card-prop${source ? ' stream-card-link' : ''}" title="${t('kc.source')}"${source ? ` onclick="event.stopPropagation(); navigateToCard('streams','${source.stream_type === 'static_image' ? 'static_image' : source.stream_type === 'processed' ? 'processed' : 'raw'}','${source.stream_type === 'static_image' ? 'static-streams' : source.stream_type === 'processed' ? 'proc-streams' : 'raw-streams'}','data-stream-id','${target.picture_source_id}')"` : ''}>📺 ${escapeHtml(sourceName)}</span>
+                <span class="stream-card-prop${patTmpl ? ' stream-card-link' : ''}" title="${t('kc.pattern_template')}"${patTmpl ? ` onclick="event.stopPropagation(); navigateToCard('targets','key_colors','kc-patterns','data-pattern-template-id','${kcSettings.pattern_template_id}')"` : ''}>📄 ${escapeHtml(patternName)}</span>
                 <span class="stream-card-prop">▭ ${rectCount} rect${rectCount !== 1 ? 's' : ''}</span>
                 <span class="stream-card-prop" title="${t('kc.fps')}">⚡ ${kcSettings.fps ?? 10}</span>
-                ${bvs ? `<span class="stream-card-prop stream-card-prop-full" title="${t('targets.brightness_vs')}">${getValueSourceIcon(bvs.source_type)} ${escapeHtml(bvs.name)}</span>` : ''}
+                ${bvs ? `<span class="stream-card-prop stream-card-prop-full stream-card-link" title="${t('targets.brightness_vs')}" onclick="event.stopPropagation(); navigateToCard('streams','value','value-sources','data-id','${bvsId}')">${getValueSourceIcon(bvs.source_type)} ${escapeHtml(bvs.name)}</span>` : ''}
             </div>
             <div class="brightness-control" data-kc-brightness-wrap="${target.id}">
                 <input type="range" class="brightness-slider" min="0" max="255"