feat(abut): 교대 벽체·흉벽 삽도와 수축줄눈·흉벽 Level 입력 추가

- 벽체·흉벽 개략 단면 SVG(src/view/abut-section-svg.ts)를 형상 카드 맨 위에 추가. 치수 글자는 카드 입력값을 mm로 표시하고, 값을 바꾸면 다시 그림
- 형상 입력에 수축줄눈 개수(정수 0 이상)와 흉벽 상단 Level 좌·우(450·995, 계산 미사용·QA-4)를 추가. 기하 계산에는 쓰지 않음
- 테스트 619건 통과, 타입 검사·빌드 통과

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

tests/abut-section-svg.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest';
+import { ABUT_SHAPE_DEFAULT, resolveShape } from '../src/core/abut/shape';
+import { abutSectionSvg } from '../src/view/abut-section-svg';
+
+describe('교대 삽도 (벽체·흉벽 개략 단면, 시안 ②)', () => {
+  it('names the card values in mm, including the new ones', () => {
+    const svg = abutSectionSvg(resolveShape(), ABUT_SHAPE_DEFAULT);
+    expect(svg).toContain('흉벽 높이 2500');
+    expect(svg).toContain('벽체 두께 2400');
+    expect(svg).toContain('저판 뒷굽 -1800');
+    expect(svg).toContain('수축줄눈 1개');
+    expect(svg).toContain('Level 좌 450 · 우 995');
+  });
+
+  it('follows a changed value, and says it is not to scale', () => {
+    const v = { ...ABUT_SHAPE_DEFAULT, shrinkJointCount: 3, parapetHeightMm: 2200 };
+    const svg = abutSectionSvg(resolveShape(v), v);
+    expect(svg).toContain('수축줄눈 3개');
+    expect(svg).toContain('흉벽 높이 2200');
+    expect(svg).toContain('축척 아님');
+  });
+
+  it('draws the footing, wall and parapet as separate shapes', () => {
+    const svg = abutSectionSvg(resolveShape(), ABUT_SHAPE_DEFAULT);
+    expect(svg.match(/<rect /g)).toHaveLength(3);
+    expect(svg.startsWith('<svg')).toBe(true);
+    expect(svg.endsWith('</svg>')).toBe(true);
+  });
+});

tests/abut-shape.test.ts

@@ -40,7 +40,17 @@ const rec = parseAbutments(XLSX.read(readFileSync(RAG), { type: 'buffer' })).abu
 describe('형상 입력이 계산에 반영됨 (시안 ② 카드)', () => {
   it('the card has one field per shape value, in the mockup order', () => {
     expect(SHAPE_EDIT_FIELDS.map((f) => f.key)[0]).toBe('wallFrontMm');
-    expect(SHAPE_EDIT_FIELDS).toHaveLength(10);
+    expect(SHAPE_EDIT_FIELDS).toHaveLength(13);
+  });
+
+  it('the new drawing values do not change the geometry (the model ignores them)', () => {
+    expect(resolveShape({ shrinkJointCount: 3, parapetLevelLeftMm: 800 })).toEqual(resolveShape());
+  });
+
+  it('the shrink-joint count must be a whole number, not negative', () => {
+    expect(shapeIssues({ shrinkJointCount: 1.5 }).join(' ')).toContain('수축줄눈');
+    expect(shapeIssues({ shrinkJointCount: -1 }).join(' ')).toContain('수축줄눈');
+    expect(shapeIssues({ shrinkJointCount: 0 })).toEqual([]);
   });
 
   it('a footing that does not cover the wall is refused by the edit rule', () => {