🔴 首席架構師審查 C1: 全系統禁止 UTC,必須台北時區 +8 - utc_now() → taipei_now() (調用 src.utils.timezone.now_taipei) - 影響: ApprovalRecord, TimelineEvent, AuditLog, IncidentRecord, KnowledgeEntryRecord - 13 處 default/onupdate 全部替換 - 移除 datetime.UTC import Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>