feat(bearing): 교량받침 ELEVATION TABLE과 솔플레이트 TABLE을 모델값으로 추가

- 모델값만 사용 (도면값 없음). A·B 열은 제거
- ELEVATION: EL.X(엑셀 z), h1 블록, h2 몰탈, h3 받침, h4 솔플(T), E, C1–C6,
  S1·S2 (블록 철근의 본수·길이, 전열 행에 일체 쌍 표시)
- 솔플레이트: S, L, W, T, T1, T2 (소수 한 자리), 검산 T1−T2 ≈ L·|S|/100
- 계산은 core/bearing-table.ts 순수 함수, 테스트 포함

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

tests/bearing-table.test.ts

@@ -0,0 +1,57 @@
+import { describe, expect, it } from 'vitest';
+import { buildPier } from '../src/core/geometry';
+import { elevationRows, solplateRows } from '../src/core/bearing-table';
+import { loadP1 } from './helpers';
+
+const model = buildPier(loadP1());
+const integrated = buildPier({ ...loadP1(), bearingLayout: '일체' });
+
+describe('교량받침 ELEVATION TABLE (모델값, 2026-11-03)', () => {
+  const rows = elevationRows(model);
+
+  it('one row per bearing; EL.X is the Excel z (mortar top)', () => {
+    expect(rows.length).toBe(10);
+    expect(rows[0].elx).toBeCloseTo(43.561, 3);
+    expect(rows[5].elx).toBeCloseTo(43.611, 3);
+  });
+
+  it('front block 100 mm, back block 150 mm; mortar 50; bearing 186; solplate 25; E = sum', () => {
+    expect(rows[0]).toMatchObject({ h1: 100, h2: 50, h3: 186, h4: 25, E: 361 });
+    expect(rows[5]).toMatchObject({ h1: 150, h2: 50, h3: 186, h4: 25, E: 411 });
+  });
+
+  it('C1 is 600 for a 분리 bearing; C6 is the 1200 block depth; C4 and C5 are 600 each', () => {
+    expect(rows.every((r) => r.C1 === 600)).toBe(true);
+    expect(rows.every((r) => r.C6 === 1200)).toBe(true);
+    expect(rows[0]).toMatchObject({ C4: 600, C5: 600 });
+  });
+
+  it('C2 and C3 sit on the front row only: C2 is the bearing distance along 교축, C3 = C2 + 1200', () => {
+    expect(rows[0].C2).toBeGreaterThan(1000);
+    expect(rows[0].C3).toBe(rows[0].C2! + 1200);
+    expect(rows[5].C2).toBeNull();
+    expect(rows[5].C3).toBeNull();
+  });
+
+  it('S1 and S2 come from the block rebar: 8 bars of 2500 each on a 분리 block', () => {
+    expect(rows[0].S1).toEqual({ count: 8, length: 2500 });
+    expect(rows[0].S2).toEqual({ count: 8, length: 2500 });
+  });
+
+  it('일체: the pair block gives C3 = 2500 on the front row and the bars on the front row only', () => {
+    const ir = elevationRows(integrated);
+    expect(ir[0].C3).toBe(2500);
+    expect(ir[5].S1).toBeNull();
+    expect(ir[0].S1).not.toBeNull();
+  });
+});
+
+describe('솔플레이트 TABLE (모델값, 2026-11-03)', () => {
+  it('10 rows with S −0.5, L 1000, W 1100, T 25, T1 27.5, T2 22.5; the check holds', () => {
+    const rows = solplateRows(model);
+    expect(rows.length).toBe(10);
+    expect(rows[0]).toMatchObject({ S: -0.5, L: 1000, W: 1100, T: 25, T1: 27.5, T2: 22.5, ok: true });
+    expect(rows[0].checkLhs).toBeCloseTo(5, 9);
+    expect(rows[0].checkRhs).toBeCloseTo(5, 9);
+  });
+});