Every file was committed with mode 100644. Git on Linux and macOS ignores a hook without the executable bit ("The '.githooks/pre-commit' hook was ignored because it's not set as executable"), so the content check that CONTRIBUTING.md turns on with core.hooksPath never ran before a commit there. tools/fetch_refs.sh, which AGENTS.md runs as a command, stopped with "Permission denied". Windows does not look at the bit, so nothing changes there.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Comments say what the code does and why, docs/maxwell.md keeps the Maxwell facts, and fetch_refs.sh clones only the checkout the build reads. Code is unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>