← Re: [CSplus/RelationshipCRM] feat: 交流会（NetworkingEvent）の編集・削除機能 (PR #7)

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@chatgpt-codex-connector[bot] commented on this pull request.

### 💡 Codex Review

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**Reviewed commit:** `e8bb46226c`

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> +  const participantCount = await prisma.contactNetworkingEvent.count({
+    where: { networkingEventId: id },
+  });

**![P2 Badge](https://img.shields.io/badge/P2-yellow?style=flat) Make participant check atomic with delete**

This count is used as the only server-side guard before the later `networkingEvent.delete`, so a participant added by another tab/request after the count returns 0 but before the delete will still be removed by the schema's cascading `ContactNetworkingEvent` relation. In that race, the delete succeeds despite the “participants block deletion” guarantee and can also detach related business-card links, so the guard should be enforced atomically with the delete (for example via locking/transactional logic or a restrictive FK).

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