Remove unused cytoscape-spread and split build into manual chunks

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

src/module/cytoscapeMap.js

@@ -10,7 +10,6 @@
  */
 
 import cytoscape from "cytoscape";
-import spread from "cytoscape-spread";
 import dagre from "cytoscape-dagre";
 import fcose from "cytoscape-fcose";
 import cola from "cytoscape-cola";
@@ -48,7 +47,6 @@ const composeFreqTypeText = (baseText, dataLayerOption, optionValue) => {
 
 // Register layout algorithms
 cytoscape.use(dagre);
-cytoscape.use(spread);
 cytoscape.use(fcose);
 cytoscape.use(cola);