feat(WEB): 중간검사 성적서 편집 모드 및 저장 기능 추가

- 3개 검사 콘텐츠 컴포넌트에 forwardRef + useImperativeHandle 추가 (getInspectionData 노출)
- InspectionReportModal에 readOnly prop, 저장 버튼, ref 연결 추가
- saveInspectionData 서버 액션 추가 (POST /api/v1/work-orders/{id}/inspection)
- 작업자 화면에서 readOnly={false} 전달 (편집+저장 가능)
- 작업지시 관리에서는 readOnly 기본값(true)으로 읽기 전용 유지

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/production/WorkOrders/documents/ScreenInspectionContent.tsx

@@ -13,9 +13,13 @@
  * - 부적합 내용 / 종합판정(자동)
  */
 
-import { useState, useCallback, useMemo } from 'react';
+import { useState, useCallback, useMemo, forwardRef, useImperativeHandle } from 'react';
 import type { WorkOrder } from '../types';
 
+export interface InspectionContentRef {
+  getInspectionData: () => unknown;
+}
+
 interface ScreenInspectionContentProps {
   data: WorkOrder;
   readOnly?: boolean;
@@ -39,7 +43,7 @@ interface InspectionRow {
 
 const DEFAULT_ROW_COUNT = 6;
 
-export function ScreenInspectionContent({ data: order, readOnly = false }: ScreenInspectionContentProps) {
+export const ScreenInspectionContent = forwardRef<InspectionContentRef, ScreenInspectionContentProps>(function ScreenInspectionContent({ data: order, readOnly = false }, ref) {
   const fullDate = new Date().toLocaleDateString('ko-KR', {
     year: 'numeric',
     month: 'long',
@@ -115,6 +119,22 @@ export function ScreenInspectionContent({ data: order, readOnly = false }: Scree
     return null;
   }, [rows, getRowJudgment]);
 
+  useImperativeHandle(ref, () => ({
+    getInspectionData: () => ({
+      rows: rows.map(row => ({
+        id: row.id,
+        processStatus: row.processStatus,
+        sewingStatus: row.sewingStatus,
+        assemblyStatus: row.assemblyStatus,
+        lengthMeasured: row.lengthMeasured,
+        widthMeasured: row.widthMeasured,
+        gapResult: row.gapResult,
+      })),
+      inadequateContent,
+      overallResult,
+    }),
+  }), [rows, inadequateContent, overallResult]);
+
   // 체크박스 렌더 (양호/불량)
   const renderCheckStatus = (rowId: number, field: 'processStatus' | 'sewingStatus' | 'assemblyStatus', value: CheckStatus) => (
     <td className="border border-gray-400 p-1">
@@ -380,4 +400,4 @@ export function ScreenInspectionContent({ data: order, readOnly = false }: Scree
       </table>
     </div>
   );
-}
+});