Add under-anything knowledge dashboard

Understand-Anything-main/understand-anything-plugin/packages/dashboard/src/utils/layout.worker.ts

@@ -0,0 +1,47 @@
+import dagre from "@dagrejs/dagre";
+
+export interface LayoutMessage {
+  requestId: number;
+  nodes: Array<{ id: string; width: number; height: number }>;
+  edges: Array<{ source: string; target: string }>;
+  direction: "TB" | "LR";
+}
+
+export interface LayoutResult {
+  requestId: number;
+  positions: Record<string, { x: number; y: number }>;
+}
+
+self.onmessage = (e: MessageEvent<LayoutMessage>) => {
+  const { requestId, nodes, edges, direction } = e.data;
+
+  const g = new dagre.graphlib.Graph();
+  g.setDefaultEdgeLabel(() => ({}));
+  g.setGraph({
+    rankdir: direction,
+    nodesep: 60,
+    ranksep: 80,
+    marginx: 20,
+    marginy: 20,
+  });
+
+  for (const node of nodes) {
+    g.setNode(node.id, { width: node.width, height: node.height });
+  }
+
+  for (const edge of edges) {
+    g.setEdge(edge.source, edge.target);
+  }
+
+  dagre.layout(g);
+
+  const positions: Record<string, { x: number; y: number }> = {};
+  for (const node of nodes) {
+    const pos = g.node(node.id);
+    positions[node.id] = pos
+      ? { x: pos.x - node.width / 2, y: pos.y - node.height / 2 }
+      : { x: 0, y: 0 };
+  }
+
+  self.postMessage({ requestId, positions } satisfies LayoutResult);
+};