The `testdata/corpus/email-agent/` directory is a copy of the Anthropic-published
"Email Agent Demo" (upstream: github.com/anthropics/email-agent or the
equivalent demo distribution). Its package.json declares:

    "license": "ISC"

Reproduced here under the ISC license, the canonical text of which is:

================================================================================

ISC License

Copyright (c) Anthropic, PBC.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

================================================================================

No modifications have been made to the vendored copy beyond the engine's
.gitignore which excludes transitive node_modules / build artefacts.
