PR Readiness Checklist

Confirm the branch is based on current main.
Confirm the diff matches the stated scope.
Confirm no secrets, logs, temp files, or unrelated refactors are included.
Confirm make pre-commit passed, or document why it could not run.
Confirm extra verification commands are listed for risky changes.
Confirm the PR title uses Conventional Commits and stays within 72 characters.
Confirm the PR title does not use tool-specific prefixes such as [codex].
Confirm the PR body is in English.
Confirm the PR body keeps the exact headings from .github/pull_request_template.md.
Confirm non-applicable sections are filled with N/A.
Confirm the PR body does not include local absolute paths unless explicitly required.
Confirm multiline GitHub CLI commands use --body-file.