Real bug found in v2.1.0: ubuntu-runner zip preserved LF line endings, which
breaks Windows batch parsing. cmd.exe mis-tokenized 'setlocal' as 'local',
trashed env vars, and produced 'URL: //node--win-x64.zip' on Node download.
Symptom: Windows users who unzip and double-click setup.bat see a flood of
'XXX is not recognized as a command' errors followed by curl 'No host part'.
Fix: convert .bat/.cmd/.ps1 to CRLF, ensure .sh/.command/.mjs stay LF, before
zipping in the portable-skeleton job.
The previous job ran setup.{sh,bat} on the runner which downloaded Node.js +
3.4 GB of OpenClaw deps (clawdbot, @sliverp, node-llama-cpp), pushing the
Windows zip past GitHub's 2 GB single-file limit.
The portable folder is designed to fetch deps on first launch via setup.sh —
ship just the source skeleton (~1 MB) and let the user-side script populate
app/runtime + app/core/node_modules from China mirrors at first launch.
This also collapses portable-windows + portable-mac into one ubuntu-runner
job since the skeleton is platform-agnostic.
