The hpack test task references fixtures removed from the repository

Summary

rake hpack and therefore rake all fail immediately because spec/hpack_test_spec.rb iterates spec/hpack-test-case/raw-data, but spec/hpack-test-case is absent from current main.

Reproduction

On ac8d59014ed282febe5fd096cb3286c32b476db8 with the repository bundle:

bundle exec rake hpack
Errno::ENOENT: No such file or directory .../spec/hpack-test-case/raw-data
0 examples, 0 failures, 1 error occurred outside of examples

The fixture tree existed historically and disappeared in the fresh-version reset (bd74873), while the spec and Rake task remained. The normal rake spec intentionally excludes this file and passes 448 examples.

Suggested follow-up

Either restore/pin the HPACK fixture corpus (ideally with an explicit provenance/version) or remove/replace the stale task and spec. I have not changed test files as part of the dependency audit.

I used an AI coding assistant during source/test-task verification.

Start with spec/hpack_test_spec.rb and the Rake task behind rake hpack; reproduce the missing spec/hpack-test-case/raw-data failure, then inspect the fixture-removal history around bd74873. Decide whether the fixture corpus can be restored with provenance or the stale task and spec should be replaced; done means rake hpack and rake all no longer fail while the existing spec suite remains passing.