#3644 persists HCL block attributes into node metadata, which is serialized to
graph.json verbatim and surfaced to the model over MCP (query/get_node) with no
sanitize_metadata pass. A hardcoded credential in a .tf file (password,
db_password, aws_secret_access_key, client_secret, a connection string, ...)
would leak. Redact the VALUE of any attribute whose key names a secret while
keeping the key visible, so instance_type/ami queries still work and a user can
still see THAT a secret is set. Recurses into map values so a nested secret in a
tags/connection map is redacted too.
Also notes Terraform block attributes in the _AST_CACHE_SCHEMA 4 comment (they
are newly-cached facts covered by the same bump #3653 introduced).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
