move lightrag_webui folder to top directory

lightrag_webui/src/components/FocusOnNode.tsx

@@ -0,0 +1,31 @@
+import { useCamera, useSigma } from '@react-sigma/core'
+import { useEffect } from 'react'
+import { useGraphStore } from '@/stores/graph'
+
+/**
+ * Component that highlights a node and centers the camera on it.
+ */
+const FocusOnNode = ({ node, move }: { node: string | null; move?: boolean }) => {
+  const sigma = useSigma()
+  const { gotoNode } = useCamera()
+
+  /**
+   * When the selected item changes, highlighted the node and center the camera on it.
+   */
+  useEffect(() => {
+    if (!node) return
+    sigma.getGraph().setNodeAttribute(node, 'highlighted', true)
+    if (move) {
+      gotoNode(node)
+      useGraphStore.getState().setMoveToSelectedNode(false)
+    }
+
+    return () => {
+      sigma.getGraph().setNodeAttribute(node, 'highlighted', false)
+    }
+  }, [node, move, sigma, gotoNode])
+
+  return null
+}
+
+export default FocusOnNode