Module git 

In-place checkpoint/revert for the optimization loop, using the git index.

The optimizer edits the scheduler crate in place on the current branch - it creates no branch and makes no commits. The git index is used as the checkpoint: an accepted round is staged (git add), and a rejected round is reverted by restoring the working tree from the index (git checkout --), which leaves earlier accepted changes intact and keeps cargo’s incremental build cache warm. When the run ends the crate is unstaged, so the winning variant is left as ordinary (uncommitted) working-tree modifications.

Functions

checkpoint

Checkpoint the current crate state as accepted by staging it into the index.

diff

Diff of the crate dir between base_ref and the working tree.

discard

Revert the crate working tree to the last checkpoint by restoring it from the index (the last accepted state, or the baseline if nothing is accepted yet).

ensure_clean

The crate directory must have no uncommitted changes before we start, so the index checkpoint begins at a known-clean baseline and a revert is safe.

git 🔒

rev_parse

unstage

Unstage the crate (reset the index to HEAD) while keeping working-tree edits, so an accepted result is left as plain uncommitted modifications.

worktree_diff

Diff of the crate dir between the index checkpoint and the working tree.