# Phase 111: Closure And Regression Audit - Context

**Gathered:** 2026-04-11
**Status:** Implemented and verified
**Mode:** Final closure phase for `v1.59`

<domain>
## Phase Boundary

Close `v1.59` with cleanup-focused coverage and a fresh full-suite baseline.

</domain>

<decisions>
## Implementation Decisions

### Locked decisions

- close backlog `999.11` only after full-suite confirmation because the cleanup
  command touches live runtime files
- keep the state-file reduction slice bounded to explicit pruning rather than
  changing default runtime materialization behavior in the same milestone

</decisions>

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*Phase: 111-closure-and-regression-audit*
*Context captured on 2026-04-11 after Phase 111 implementation and verification*
