fix(realestate-lab): 코드 리뷰 이슈 수정 — 신규 추적, 보안, 비동기, 매칭 상태 보존

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

realestate-lab/app/matcher.py

@@ -2,7 +2,7 @@ import json
 import logging
 from typing import Dict, Any, List
 
-from .db import get_profile, save_match_result, clear_match_results, _conn
+from .db import get_profile, save_match_result, _conn
 
 logger = logging.getLogger("realestate-lab")
 
@@ -120,8 +120,6 @@ def run_matching():
         logger.info("매칭 스킵: 프로필이 설정되지 않음")
         return
 
-    clear_match_results()
-
     with _conn() as conn:
         anns = conn.execute(
             "SELECT * FROM announcements WHERE status IN ('청약예정', '청약중')"
@@ -149,4 +147,10 @@ def run_matching():
                 })
                 saved += 1
 
+        # 완료/결과발표 공고의 매칭 결과 정리
+        conn.execute(
+            "DELETE FROM match_results WHERE announcement_id NOT IN "
+            "(SELECT id FROM announcements WHERE status IN ('청약예정', '청약중'))"
+        )
+
     logger.info("매칭 완료: %d건 공고 중 %d건 매칭됨", len(anns), saved)