merge: feat/contraindication-model → test(sync_log_id 索引 —— FRIDAY push 超时根因)

89dac080 patient_transactions 补 sync_log_id 索引

部署顺序(先手建索引再 deploy,避免 pac-service 白等几分钟):
  1) psql CREATE INDEX CONCURRENTLY IF NOT EXISTS(不锁写,业务照常)
  2) bash deploy/deploy-prod.sh(迁移里 IF NOT EXISTS,空跑)