first commit

ui/app/workspace/routing-rules/tree/views/positionPersistence.ts

@@ -0,0 +1,17 @@
+import { RoutingRule } from "@/lib/types/routingRules";
+
+export const POSITIONS_COOKIE = "bf-routing-tree-positions";
+
+export interface PositionCookie {
+	fingerprint: string;
+	positions: Record<string, { x: number; y: number }>;
+	viewport?: { x: number; y: number; zoom: number };
+}
+
+/** Changes whenever any rule is added, edited, or deleted. */
+export function computeFingerprint(rules: RoutingRule[]): string {
+	return rules
+		.map((r) => `${r.id}:${r.updated_at}`)
+		.sort()
+		.join("|");
+}