# Phase 52 Summary

Status: implemented on `main`

## Goal

Rebuild lifecycle verification, paired-backend maturity, and theory-synthesis
handoff in production code.

## What Landed

- lifecycle-verification and topic-completion surfaces in the runtime stack
- promotion-gate and theory-synthesis handoff artifacts
- real formal-theory acceptance coverage for the Witten closure route

## Outcome

Phase `52` is complete.
The next archived phase is `53` `reliability-onboarding-and-real-topic-e2e`.
