feat(rebar): 기둥 배근 입력 8개 (피복·띠철근 K3/K5/K4·K6·커플러·Δz·n_div), CL01·CL02 검사

- core/rebar/column-settings.ts: 입력 정의, 기본값(기둥철근 (1).md), 범위(제안), 검사 (CL01 범위, CL02 n_div 홀수)
- 주철근 하단 갈고리는 고정 (입력 없음)
- 기둥 탭 패널: 적용 버튼으로 반영, 계산 결과(K2 내측 r, 주철근·커플러 수량) 표시
- P1·P2 등분 수, P3·P5·P4·P6 간격, 커플러 간격·상승을 철근표 간격·비고와 근거(기본값/입력)에 연동
- 3D 주철근 개수도 n_div 입력을 사용 (COLUMN_P1 하드코딩 제거)

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

src/core/rebar/summary.ts

@@ -1,6 +1,7 @@
 import type { PierModel } from '../geometry';
 import { barLength, bearingBlockRebar, DEFAULT_BLOCK_REBAR, totals } from './bearing-block';
 import { DEFAULT_COPING_REBAR } from './coping-settings';
+import { DEFAULT_COLUMN_REBAR } from './column-settings';
 import { bottomPiece, topBarLength, widthLayout, topSplicePieces } from './coping-main';
 import { shearBars, shearBarsMulti, copingSideBars, SIDE_HOOK_LEG, c14Bars, c14Length, stairBars, stepDevLength, undersideAt, shearULength, capLength, PIECES_PER_POSITION } from './coping';
 import { sideRowLevels } from '../coping-geom';
@@ -147,6 +148,17 @@ export function linkedSpacing(name: string, model: PierModel): Pick<RebarRow, 's
       basis: basis(c.c14UpperSpacing !== d.c14UpperSpacing || c.c14LowerSpacing !== d.c14LowerSpacing),
     };
   }
+  // 기둥 (승인 2026-10-26): P1·P2 등분 수, 주철근 커플러, 띠철근 P3·P5·P4, 크로스타이 P6.
+  const k = model.columnRebar;
+  const kd = DEFAULT_COLUMN_REBAR;
+  if (name === 'P1' || name === 'P2') return { spacing: `원주 ${k.nDiv}등분`, actual: '—', basis: basis(k.nDiv !== kd.nDiv) };
+  if (name === '주철근 커플러') {
+    return { spacing: `@${k.ctcCoupler} (P2 +${k.dzCp2})`, actual: '—', basis: basis(k.ctcCoupler !== kd.ctcCoupler || k.dzCp2 !== kd.dzCp2) };
+  }
+  if (name === 'P3') return { spacing: String(k.ctcP3), actual: String(k.ctcP3), basis: basis(k.ctcP3 !== kd.ctcP3) };
+  if (name === 'P5') return { spacing: String(k.ctcP5), actual: String(k.ctcP5), basis: basis(k.ctcP5 !== kd.ctcP5) };
+  if (name === 'P4') return { spacing: String(k.ctcP4), actual: String(k.ctcP4), basis: basis(k.ctcP4 !== kd.ctcP4) };
+  if (name === 'P6') return { spacing: String(k.ctcP6), actual: String(k.ctcP6), basis: basis(k.ctcP6 !== kd.ctcP6) };
   if (name === 'S1') return { spacing: String(b.spacingS1), actual: String(b.spacingS1), basis: basis(b.spacingS1 !== bd.spacingS1) };
   if (name === 'S2') return { spacing: String(b.spacingS2), actual: String(b.spacingS2), basis: basis(b.spacingS2 !== bd.spacingS2) };
   return undefined;
@@ -257,11 +269,11 @@ export function rebarSummary(
   const col = columnRebar(columnInputFor(model), mColumn);
   rows.push({ member: 'column', name: 'P1', size: 'S32', count: col.mainP1, length: null, pieces: col.p1Pieces.map((length) => ({ length, count: col.mainP1 })), 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, pieces: col.p2Pieces.map((length) => ({ length, count: col.mainP2 })), note: `내측 r ${col.r2}, 마디 ${col.p2Pieces.join(' / ')}` });
-  rows.push({ member: 'column', name: '주철근 커플러', size: 'D32용 (L150 Ø60)', count: col.couplers, length: 150, note: '@3000, P2는 +150 mm 상향 엇갈림' });
+  rows.push({ member: 'column', name: '주철근 커플러', size: 'D32용 (L150 Ø60)', count: col.couplers, length: 150, note: `@${model.columnRebar.ctcCoupler}, P2는 +${model.columnRebar.dzCp2} mm 상향 엇갈림` });
   const tieCouplerCount = col.p5Count + col.p4Count * 2;
   rows.push({ member: 'column', name: '띠철근 커플러', size: 'D19용 (L100 Ø40)', count: tieCouplerCount, length: 100, note: `단부 P5 1개(${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 ${col.lapP3} (추천안, Q-C6)` });
-  rows.push({ member: 'column', name: 'P5', size: 'H19', count: col.p5Count, length: col.p5Length, note: '단부 띠철근 @120, 커플러 1개' });
+  rows.push({ member: 'column', name: 'P3', size: 'H19', count: col.p3Count, length: col.p3Length, note: `일반 구간 띠철근 @${model.columnRebar.ctcP3}, 겹침 ${col.lapP3} (추천안, Q-C6)` });
+  rows.push({ member: 'column', name: 'P5', size: 'H19', count: col.p5Count, length: col.p5Length, note: `단부 띠철근 @${model.columnRebar.ctcP5}, 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' });
   rows.push({ member: 'column', name: 'P6', size: 'H16', count: col.p6Count, length: col.p6Length, note: '크로스타이, 8단 × 4' });