docs: 전수 조사 결과 견적 관리 완료 표시 업데이트

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

plans/react-mock-to-api-migration-plan.md

@@ -55,7 +55,7 @@
 | **문의** | `/customer-center/inquiries` | MOCK_INQUIRIES, MOCK_REPLY, MOCK_COMMENTS |
 | **공지사항** | `/customer-center/notices` | MOCK_NOTICES 전체 사용 |
 | **공정관리** | `/master-data/process-management` | TODO + console.log |
-| **견적** | `/sales/quote-management` | TODO (writer, 발주처 데이터) |
+| **견적** | `/sales/quote-management` | ✅ **완료** (2025-12-26) |
 
 #### 📁 mockData.ts 삭제 대상