feat(view): shear-segment table for 2·3주형 on the ③ coping tab

The segment table lists each column's Level and the segments between columns
(추천안, Q-K2), so a 2주형 shows 좌 경사 3, Level 1 9, Level 2 9, 기둥 사이 1 18,
우 경사 3. One column is unchanged.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

src/main.ts

@@ -791,7 +791,7 @@ function renderRebar(): void {
   renderMaterial();
   // 전단철근 구간 표 (시안 ③ 코핑 탭): segments of C9 / C10 / C11 along the coping, in metres.
   if (state.rebarMember === 'coping') {
-    const seg = shearSegments(pier.model.copingL * 1000);
+    const seg = shearSegments(pier.model.copingL * 1000, pier.model.columns.map((c) => c.s * 1000));
     const st = el('table', undefined, 'grid-table rebar-table');
     const sh = el('thead');
     const shr = el('tr');