Claude wrote a secret to the wrong location despite explicit, unambiguous instructions

Asked Claude to create a database-password secret in two GitHub repos (learning-ops and learning-infra), specifying it needed to exist as a GitHub Actions environment secret in both staging and production environments on both repos, with matching values per environment.

Claude correctly created the GitHub secrets on learning-ops, but for learning-infra it instead wrote the value directly into Azure Key Vault — a different system, using a pattern that didn't match how every comparable secret in that codebase already works (as a GitHub environment secret consumed at deploy time, not a directly-written Key Vault value). The instruction named the exact secret name and exact two repos; there wasn't real ambiguity to misread.

When corrected, Claude fixed it accurately and cleaned up the incorrect Key Vault secrets on request, but the initial error should not have happened given how explicit the original instructions were.