Server: - Add endpointUri to PositionedNode (from RouteNode) - Add fromEndpointUri to RouteSummary (catalog API) - Catalog controller resolves endpoint URI from diagram store UI: - Build endpointRouteMap from catalog's fromEndpointUri field - Drill-down uses exact match on node.endpointUri against the map - Remove label parsing heuristics (extractTargetEndpoint, camelToKebab) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>