The native-Claude OAuth anti-fingerprint cloak renames a tool named `read`
to `Read` on the wire and records the reverse alias on a non-enumerable
`_toolNameMap`, which the response side un-cloaks to restore the client's
original casing. Since v3.8.27 (#3941/#3968) `execute()` returned a
JSON-round-tripped `serializedBody` as `transformedBody`; the round-trip
drops the non-enumerable map, so the restore saw an empty map and the
cloaked `Read` streamed verbatim to the client.
Re-attach the live `_toolNameMap` onto the serialized body before returning
(non-enumerable, mirrors antigravity.ts::attachToolNameMap) so tool-name
casing round-trips correctly.
Regression test exercises base.ts execute() through the claude-OAuth cloak
path and asserts the returned transformedBody carries the reverse map.
Closes#4307
6103288c48