The repo was committed from WSL with core.filemode=false, so the exec
bit was never recorded. After actions/checkout the entry script comes
down as 100644 and tests/test_cli.sh fails with Permission denied.
Set mode 100755 on every script that is invoked directly (entry,
installer, test suite, mock binaries). Sourced helpers under lib/
keep 100644 per convention.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
