docs: add station reroute refactor plan

Junjie

2026-03-24 baf1a7a138976f098ddbbf95a9373e0ed4adebe0

 src/main/java/com/zy/core/model/StationObjModel.java

@@ -26,6 +26,4 @@

    private StationObjModel backStation;

    private StationObjModel dualCrnSlaveStation;

}