Fix zoomToPoint animation to smoothly fly-to target node

Interpolate both view center and zoom level together using rAF
instead of CSS transitions, so the target node smoothly slides
to screen center while zooming in simultaneously.

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

server/src/wled_controller/static/js/features/graph-editor.js

@@ -286,9 +286,14 @@ function _watchForNewEntity() {
                 loadGraphEditor().then(() => {
                     const node = _nodeMap?.get(newId);
                     if (node && _canvas) {
+                        // Animate zoom + pan together in one transition
                         _canvas.zoomToPoint(1.5, node.x + node.width / 2, node.y + node.height / 2);
                     }
-                    _navigateToNode(newId);
+                    // Highlight the node and its chain (without re-panning)
+                    const nodeGroup = document.querySelector('.graph-nodes');
+                    if (nodeGroup) { highlightNode(nodeGroup, newId); setTimeout(() => highlightNode(nodeGroup, null), 3000); }
+                    const edgeGroup = document.querySelector('.graph-edges');
+                    if (edgeGroup && _edges) { highlightChain(edgeGroup, newId, _edges); setTimeout(() => clearEdgeHighlights(edgeGroup), 5000); }
                 });
                 return;
             }