feat(rebar): add 3D coupler modeling for P1/P2 (368) and P4/P5 (35) with separate summary table rows

src/core/rebar/summary.ts

@@ -57,6 +57,8 @@ const META: Record<string, Pick<RebarRow, 'spacing' | 'actual' | 'position' | 'd
   C16: { spacing: '250', actual: '250', position: '계단부 3·4구간', direction: '교각축', shape: 'L형', basis: 'calc' },
   P1: { spacing: '원주 46등분', actual: '—', position: '외측 r 875', direction: '연직', shape: '아래 끝 90° 갈고리, 커플러 이음', basis: 'calc' },
   P2: { spacing: '원주 46등분', actual: '—', position: '내측 r 843.2', direction: '연직', shape: '직선, 커플러 이음', basis: 'calc' },
+  '주철근 커플러': { spacing: '@3000 (P2 +150)', actual: '—', position: 'P1·P2 각 줄', direction: '원통', shape: 'L 150 · Ø60', basis: 'default' },
+  '띠철근 커플러': { spacing: '120', actual: '120', position: '단부 P5 · 기초안 P4', direction: '원통', shape: 'L 100 · Ø40', basis: 'assumed' },
   커플러: { spacing: '@3000 (P2 +150)', actual: '—', position: 'P1·P2 각 줄', direction: '원통', shape: 'L 150 · Ø60', basis: 'default' },
   P3: { spacing: '300', actual: '300', position: '일반 구간 (코핑 안 포함)', direction: '원형', shape: '겹침 (추천안)', basis: 'assumed' },
   P5: { spacing: '120', actual: '120', position: '단부 구간 (첫 P3 아래)', direction: '원형', shape: '반원 2개가 아닌 원형 1개, 커플러 1개', basis: 'calc' },
@@ -188,7 +190,9 @@ export function rebarSummary(model: PierModel, m: Material = DEFAULT_MATERIAL):
   const col = columnRebar(COLUMN_P1, m);
   rows.push({ member: 'column', name: 'P1', size: 'S32', count: col.mainP1, length: null, note: `외측 r ${col.r1}, 마디 ${col.p1Pieces.join(' / ')} (첫 마디에 갈고리 ${col.p1Hook}, 기둥철근.md §3.2)` });
   rows.push({ member: 'column', name: 'P2', size: 'S32', count: col.mainP2, length: null, note: `내측 r ${col.r2}, 마디 ${col.p2Pieces.join(' / ')}` });
-  rows.push({ member: 'column', name: '커플러', size: 'L150 Ø60', count: col.couplers, length: 150, note: '@3000, P2 +150' });
+  rows.push({ member: 'column', name: '주철근 커플러', size: 'D32용 (L150 Ø60)', count: col.couplers, length: 150, note: '@3000, P2는 +150 mm 상향 엇갈림' });
+  const tieCouplerCount = col.p5Count + col.p4Count * 2;
+  rows.push({ member: 'column', name: '띠철근 커플러', size: 'D19용 (L100 Ø40)', count: tieCouplerCount, length: 100, note: `단부 P5 1개(${col.p5Count}) · 기초안 P4 2개(${col.p4Count * 2}) 폐합용` });
   rows.push({ member: 'column', name: 'P3', size: 'H19', count: col.p3Count, length: col.p3Length, note: `일반 구간 띠철근 @300, 겹침 ${col.lapP3} (추천안, Q-C6)` });
   rows.push({ member: 'column', name: 'P5', size: 'H19', count: col.p5Count, length: col.p5Length, note: '단부 띠철근 @120, 커플러 1개' });
   rows.push({ member: 'column', name: 'P4', size: 'H19', count: col.p4Count, length: col.p4SemicircleLength * 2, note: '확대기초 안, 반원 2개 (길이는 반원 2개 합) · B11 간섭 무시' });