Re-init repo to remove historical zip blobs from git history

[timenick]

Background

After #213 merges, the runtime check rule zip files (~312 MB) will be removed from git tracking. However, historical commits still contain these blobs, keeping the repo clone size large.

Plan

Re-init the repo and squash all history into a single commit to eliminate historical blobs.

git checkout main && git pull origin main
rm -rf .git
git init && git add -A && git commit -m "initial commit"
git remote add origin https://github.com/microsoft/ModelKit.git
git branch -M main && git push origin main --force

Prerequisites

• Move runtime check rule zips to external repo #213 is merged
• No open PRs (all will be invalidated)
• Team notified — everyone must re-clone after this

Impact

• All commit history, git blame, and git log will be lost
• Existing merged PR links remain but commit SHAs will be invalid
• Repo clone size will drop significantly