Merge remote-tracking branch 'origin/sub_laptop_4' into sub_laptop_5

A00_Common/design/design_view_cross.ts

@@ -179,6 +179,7 @@ export async function mountCrossView(
     focusChainage: (chainageM) => {
       if (!isWallSelecting()) focusStationAt(chainageM);
     },
+    markStructure: (structureId) => sectionView.selectMark(structureId),
     applyPipeOptions: (chainageM, patch) =>
       applyPipeOptionsToCache(pipeOptionsContext, chainageM, patch),
   });
@@ -316,6 +317,7 @@ export async function mountCrossView(
     moveStructure: (structureId, toChainageM) => {
       structuresPanel.moveStructureTo(structureId, toChainageM);
     },
+    selectStructure: (structureId) => structuresPanel.selectStructure(structureId),
   });
   // 폼 → 횡단 캐시 반영은 따로 뗀 모듈이 맡는다(2026-09-02 분리).
   const pipeOptionsContext: PipeOptionsContext = {
@@ -426,7 +428,12 @@ export async function mountCrossView(
       handoff,
       sectionDetail,
       {
-        focusStation: (stationId) => sectionView.focusStation(stationId),
+        // 넘겨받은 구조물 id 가 그 측점 관보다 먼저다(52-15).
+        focusStation: (stationId) => {
+          structuresPanel.prefer(handoff?.structureId ?? null);
+          sectionView.focusStation(stationId);
+          structuresPanel.prefer(null);
+        },
         refreshCard: (chainageM) => sectionView.refreshCard(chainageM),
         revetSelect: (chainageM, key) => stationControls.revetOffset.select(chainageM, key),
         fordSelect: (chainageM, role) => stationControls.ford.select(chainageM, role),