Extends the header redaction from #1585. Before a fetch entry reaches any
sink, mask known-sensitive credentials in the request/response bodies and
the URL query string, in addition to headers:
- redactBody(): form-urlencoded + JSON bodies, recursive over nested
objects/arrays, best-effort (never throws), values-only.
- redactUrlQuery(): masks sensitive query params, preserves path,
non-sensitive params, and any fragment.
- Sensitive fields: client_secret, code, refresh_token, access_token,
id_token, code_verifier, client_assertion, assertion, password, token
(case-insensitive), reusing the [REDACTED] sentinel.
Applied to the request success + error entries and the async response-body
callback. Live outbound requests are byte-identical — only the logged copy
is redacted.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S3fTN8H3R8YV4yUGvZjYnX
524bf2d543