fix(tkpurchase): 협력업체 포탈 활성 일정 전체 표시로 변경

오늘 날짜 범위 필터 제거 → 마감/취소되지 않은 모든 일정 표시.
체크인 날짜 제한도 상태 기반 검증으로 변경하여 일정 기간 외에도 체크인 가능.

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

tkpurchase/api/models/checkinModel.js

@@ -216,4 +216,17 @@ async function findHistoryByCompany(companyId, { dateFrom, dateTo, page = 1, lim
   return { data: checkins, total, page, limit };
 }
 
-module.exports = { findBySchedule, findById, findTodayByCompany, checkIn, checkOut, update, resetCheckout, countActive, deleteCheckin, checkOutWithReport, findHistoryByCompany };
+async function findActiveByCompany(companyId) {
+  const db = getPool();
+  const [rows] = await db.query(
+    `SELECT pc.*, ps.work_description, ps.workplace_name,
+            (SELECT COUNT(*) FROM partner_work_reports WHERE checkin_id = pc.id) AS work_report_count
+     FROM partner_work_checkins pc
+     LEFT JOIN partner_schedules ps ON pc.schedule_id = ps.id
+     WHERE pc.company_id = ?
+       AND (pc.check_out_time IS NULL OR DATE(pc.check_in_time) = CURDATE())
+     ORDER BY pc.check_in_time DESC`, [companyId]);
+  return rows;
+}
+
+module.exports = { findBySchedule, findById, findTodayByCompany, findActiveByCompany, checkIn, checkOut, update, resetCheckout, countActive, deleteCheckin, checkOutWithReport, findHistoryByCompany };