Require a code owner review

[JordanNanos]

Purpose

The repository needs named owners for all files. Branch protection requires one owner approval.

What changed

• Add one repository-wide rule to .github/CODEOWNERS.
• Assign @JordanNanos, @samharshe, and @Prathmesh234 as owners.
• Require one code owner approval.
• Remove the last-pusher approval rule.

Effect

• Users: None.
• Operators: One listed owner must approve each pull request.
• Developers: GitHub requests reviews from the three listed owners.
• Data and compatibility: None.

Technical terms

• CODEOWNERS: A GitHub file that assigns reviewers to repository paths.
• code owner: A person who reviews changes to assigned files.
• branch protection: GitHub rules that control changes to master.

Validation

• git diff --cached --check: Pass.
• gh api repos/SemiAnalysisAI/ClusterMAX/collaborators/<login>/permission: Pass. Each owner has write or administrator access.
• gh api repos/SemiAnalysisAI/ClusterMAX/branches/master/protection/required_pull_request_reviews: Pass. Code owner review is required.
• Not run: Runtime tests do not apply to a reviewer assignment file.

Merge plan

• Merge order: None. This PR can merge independently.
• Dependency: Branch protection on master.
• Release step: Merge this PR to activate the owner assignments.

Design decisions for approval

• Approval required: No.
• Decision: Require one approval from the three named owners.
• Options: Assign users directly or assign an organization team.
• Recommendation: Assign the three users directly as requested.
• Approver: Jordan Nanos.

Risk and recovery

• Risk: An unavailable owner can delay a pull request.
• Safeguard: Any one of the three owners can approve.
• Rollback: Remove the rule and disable required code owner reviews.

Excluded work

• Path-specific ownership rules.
• Organization team ownership.

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Note

Low Risk
Process-only change (reviewer assignment); no application code, data, or runtime behavior.

Overview
Adds .github/CODEOWNERS with a single wildcard (*) rule so every path in the repo is owned by @JordanNanos, @samharshe, and @Prathmesh234.

When branch protection requires code owner reviews, GitHub will route PRs to those three accounts and one of them must approve before merge.

^{Reviewed by Cursor Bugbot for commit 7953d67. Bugbot is set up for automated code reviews on this repo. Configure here.}