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- AdEcpmRecord 新增 trace_id(String 64, index, nullable)列,与 ad_feed_reward_record 一致 - 迁移 ad_ecpm_trace_id:ADD COLUMN + CREATE INDEX,同时收敛双 head (11c44afbea58 selfstat + merge_pages_override_coupon_slot → 单 head) - EcpmReportIn.trace_id 字段透传客户端本场比价/领券 session ID - create_ecpm_record 新增 trace_id 参数并落库 - ecpm_report 端点 forward payload.trace_id 到 repository Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>