fix: daily_work_reports 테이블명 충돌 → partner_work_reports로 변경

기존 TBM 시스템의 daily_work_reports 테이블과 이름 충돌.
협력업체 업무현황 테이블을 partner_work_reports로 분리.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tkpurchase/api/models/checkinModel.js

@@ -30,7 +30,7 @@ async function findTodayByCompany(companyId) {
             (dwr.id IS NOT NULL) AS has_work_report
      FROM partner_work_checkins pc
      LEFT JOIN partner_schedules ps ON pc.schedule_id = ps.id
-     LEFT JOIN daily_work_reports dwr ON dwr.checkin_id = pc.id
+     LEFT JOIN partner_work_reports dwr ON dwr.checkin_id = pc.id
      WHERE pc.company_id = ? AND DATE(pc.check_in_time) = CURDATE()
      ORDER BY pc.check_in_time DESC`, [companyId]);
   return rows;