nightshift/docs/devlog/phase13.md

Phase 13 Devlog: Git Safety and Diff Artifacts

Implemented

• Added nightshift/git.py.
• Implemented clean-worktree enforcement when require_clean_worktree is true.
• Captured pre-run and post-run git status artifacts.
• Wrote per-task diff.patch artifacts.
• Handled non-git repositories and git failures gracefully when clean worktree is not required.
• Added git tests with temporary repositories.

Decisions Made

• Clean-worktree enforcement runs before artifact creation so NightShift does not dirty a repo before checking it.
• If clean worktree is required and git status cannot be read, execution fails safely.
• Diff artifacts are written even when git is unavailable, with a readable explanation instead of crashing.

Notes

• Existing final reports already include modified files when git status is available.