---
name: CTO Case Stage5 Repeatability Proof PRD
status: validated
lifecycle_classification: sot
owner: jp
created: 2026-06-02
last_reviewed: 2026-06-02
core_promotion_status: not-promoted
---

# CTO Case Stage5 Repeatability Proof PRD

Stage 5 repeatability proof.

Local planning SOT only. Not a Core Protocol. Not active Core authority.

## Problem

The first governed Stage 5 run proved one approved Case mutation. CTO still needs a second governed Stage 5 Case run to prove repeatability without activating Case as default.

## Scope

- Add Harness case `r1-slugify-punctuation`.
- Use admitted target repository `/home/svrnty/workspaces/cortex-os/cto-stage5-target-sandbox`.
- Limit writes to `strings.py`, `src/strings.py`, and `test_strings.py`.
- Use JP chat instruction on 2026-06-02 to execute the repeatability proof as the approval source.
- Run one Stage 5 Case Harness execution.
- Record Harness report, Stage 5 proof, target commit, validations, and WebUI summary validation.

## Non-goals

- Do not activate Case as default backend.
- Do not promote CTO artifacts into Core.
- No Core promotion occurs.
- Do not authorize another Case run.
- This closeout does not authorize another Case run.
- Do not push, merge, deploy, close, PR open, issue close, or publish.
- Do not store endpoint values, secret values, or credential values in SOT.

## Acceptance Criteria

- `CTO-WORK-078`, `CTO-WORK-079`, and `CTO-WORK-080` are validated.
- Harness route commit records `r1-slugify-punctuation`.
- Fake baseline passes.
- Live Stage 5 Case run passes.
- case_process_started: true.
- changed files: `src/strings.py`, `strings.py`, `test_strings.py`.
- allowed paths passed: true.
- forbidden paths passed: true.
- target repository start clean: true.
- target repository ending clean: true.
- target validation result is `11 passed`.
- Runtime default activation remains false.
- Harness route commit: `99000f7`.
- Target commit: `2fa1601`.
- Harness report: `/home/svrnty/.hermes/profiles/cto-planb/harness-runs/20260602T101450Z-r1-slugify-punctuation-2663598/report.json`.
- Stage 5 proof: `/home/svrnty/.hermes/profiles/cto-planb/harness-runs/20260602T101450Z-r1-slugify-punctuation-2663598/stage5-owned-repo-proof.json`.

## Validation

- `python3 tools/validate_cto_child.py`
- `python3 /home/svrnty/workspaces/cortex-os/core/tools/check_s69_caveman_prose_discipline.py`