feat(abut): 날개벽 배근 입력 저장 (좌우 공통)

- AbutRecord.rebar.wing (바꾼 값만), applyWingRebar, 프로젝트 파일 검증

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

src/core/abut/edit.ts

@@ -11,6 +11,7 @@ import type { AbutGround } from './ground';
 import { footingRebarIssues, resolveFootingRebar, type AbutFootingRebarSettings } from './rebar/footing';
 import { resolveWallRebar, wallRebarIssues, type AbutWallRebarSettings } from './rebar/wall';
 import { parapetRebarIssues, resolveParapetRebar, type AbutParapetRebarSettings } from './rebar/parapet';
+import { resolveWingRebar, wingRebarIssues, type AbutWingRebarSettings } from './rebar/wing';
 import { abutBearingRuleIssues, resolveBearingRule, type AbutBearingRule } from './bearing-table';
 
 export type AbutEditKey = 'seatEl' | 'foundationBottomEl' | 'groundEl' | 'pileLengthMm' | 'skewDeg' | 'slopeI';
@@ -200,6 +201,16 @@ export function applyParapetRebar(rec: AbutRecord, patch: Partial<AbutParapetReb
   return { ...rec, rebar: { ...(rec.rebar ?? {}), parapet } };
 }
 
+/** Changes ③ 날개벽 배근 values (좌우 공통, 사용자 결정 2026-11-04; only the changed ones are kept), refused with a Korean message. */
+export function applyWingRebar(rec: AbutRecord, patch: Partial<AbutWingRebarSettings>): AbutRecord {
+  for (const v of Object.values(patch)) if (typeof v === 'number' && !Number.isFinite(v)) throw new Error('숫자를 입력하세요.');
+  const wing: Partial<AbutWingRebarSettings> = { ...(rec.rebar?.wing ?? {}), ...patch };
+  for (const key of Object.keys(wing) as (keyof AbutWingRebarSettings)[]) if (wing[key] === undefined) delete wing[key];
+  const issues = wingRebarIssues(resolveWingRebar(wing));
+  if (issues.length > 0) throw new Error(issues[0]);
+  return { ...rec, rebar: { ...(rec.rebar ?? {}), wing } };
+}
+
 /** Changes one 접속슬래브 dim, refused with a Korean message when the slab would not build. */
 export function applySlabEdit(rec: AbutRecord, key: (typeof SLAB_EDIT_FIELDS)[number]['key'], value: number): AbutRecord {
   if (!Number.isFinite(value)) throw new Error('숫자를 입력하세요.');

src/core/abut/parse.ts

@@ -18,6 +18,7 @@ import type { AbutGround } from './ground';
 import type { AbutFootingRebarSettings } from './rebar/footing';
 import type { AbutWallRebarSettings } from './rebar/wall';
 import type { AbutParapetRebarSettings } from './rebar/parapet';
+import type { AbutWingRebarSettings } from './rebar/wing';
 
 type Cell = string | number | null | undefined;
 type Grid = Cell[][];
@@ -69,7 +70,7 @@ export interface AbutRecord {
   /** 지반·지층 입력 (② 지반·지층 카드, 교각과 같은 필드). Absent = 육상, 지하수위 없음, 지층 행 없음. */
   ground?: AbutGround;
   /** ③ 배근 입력 (부재별, 바꾼 값만). Absent = 엑셀 Abut 시트 기본값. */
-  rebar?: { footing?: Partial<AbutFootingRebarSettings>; wall?: Partial<AbutWallRebarSettings>; parapet?: Partial<AbutParapetRebarSettings> };
+  rebar?: { footing?: Partial<AbutFootingRebarSettings>; wall?: Partial<AbutWallRebarSettings>; parapet?: Partial<AbutParapetRebarSettings>; wing?: Partial<AbutWingRebarSettings> };
   /** 예전 "좌우 같게" 값 (2026-11-04 이전 파일). 지금은 읽기만 하고 쓰지 않는다. */
   wingsLinked?: boolean;
 }

src/core/project.ts

@@ -174,6 +174,9 @@ export function checkStoredAbutments(list: unknown): void {
       for (const [key, v] of Object.entries(a.rebar.parapet ?? {})) {
         if (!finite(v)) throw new Error(`${who}: 흉벽 배근 값 ${key}이(가) 맞지 않습니다.`);
       }
+      for (const [key, v] of Object.entries(a.rebar.wing ?? {})) {
+        if (!finite(v)) throw new Error(`${who}: 날개벽 배근 값 ${key}이(가) 맞지 않습니다.`);
+      }
     }
     if (a.wingsLinked !== undefined && typeof a.wingsLinked !== 'boolean') throw new Error(`${who}: 좌우 같게 값이 맞지 않습니다.`);
     if (a.wings !== undefined) {