# Phase 123 Summary

Status: implemented on `main`

## Goal

Close `v1.63` on a maintainable, fully verified baseline.

## What Landed

- source-catalog acceptance now covers BibTeX export and import
- maintainability-budget verification after the new helper landed
- archived milestone packet under `.planning/milestones/v1.63-*`

## Outcome

Phase `123` is complete.
`v1.63` is ready to close as a completed milestone.
