Mina Choi 0c6a002e29 [fix] negodata/backend: 시각 컬럼 timestamptz 전환 + naive 변환 제거 ... - models.py: created_at/updated_at/last_accessed_at/start_time/end_time/bid_at DateTime → DateTime(timezone=True) - quotation_service: tz-aware 입력을 naive 로 깎던 _naive_utc 제거(컬럼이 tz-aware라 불필요), start_time/end_time 직접 사용. negosium_db 는 UTC 고정. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>		2026-06-26 15:30:33 +09:00
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models.py	[fix] negodata/backend: 시각 컬럼 timestamptz 전환 + naive 변환 제거	2026-06-26 15:30:33 +09:00