regen-generated.mjs resolved each conflicted generated file with
`git checkout <ref> --`, which also staged it, so a failing generator left
the conflict resolved with the branch's stale file. It now writes the
chosen side's file to the working tree only and stages it after both
generators succeed.
It also always took MERGE_HEAD's ledger, so merging a branch with an older
Node pin into one with a newer pin regenerated from a ledger for the older
pin and failed. It now takes the side (index stage 2 or 3) whose ledger is
for the merged pin in node-v24.json, and when neither is, stops and says
to run pnpm node-compat, which fetches the pinned docs.
Chris Tate
100e7738a0