feat(realestate): 결과발표 공고 매칭 점수 보존

run_matching() 대상을 '청약예정/청약중/결과발표'로 확장.
삭제는 '완료' 상태만 — 결과발표 단계의 매칭 기록은 유지.

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

realestate-lab/app/matcher.py

@@ -205,7 +205,7 @@ def run_matching():
         profile = _profile_row_to_dict(profile_row)
 
         anns = conn.execute(
-            "SELECT * FROM announcements WHERE status IN ('청약예정', '청약중')"
+            "SELECT * FROM announcements WHERE status IN ('청약예정', '청약중', '결과발표')"
         ).fetchall()
 
         for ann_row in anns:
@@ -235,10 +235,10 @@ def run_matching():
                     json.dumps(result["score_breakdown"]),
                 ))
 
-        # Clean up stale match results for completed announcements
+        # 완료 상태 공고의 매칭 결과만 삭제 (결과발표는 보존)
         conn.execute(
-            "DELETE FROM match_results WHERE announcement_id NOT IN "
-            "(SELECT id FROM announcements WHERE status IN ('청약예정', '청약중'))"
+            "DELETE FROM match_results WHERE announcement_id IN "
+            "(SELECT id FROM announcements WHERE status = '완료')"
         )
 
     logger.info("매칭 완료")