---
name: CTO Core Route Admission Guard
status: validated
lifecycle_classification: sot
owner: jp
created: 2026-06-02
last_reviewed: 2026-06-02
core_promotion_status: not-promoted
source: .sot/03-PROTOCOLS/CTO-CORE-ROUTE-ADMISSION-GUARD-ISSUES.md
---

# CTO Core Route Admission Guard

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

Core Route Admission Guard.

## Workboard

- `CTO-WORK-089`
- `CTO-WORK-090`

## Route State

- core_route_admission_status: not_admitted
- guard_status: blocked
- blocked_reason: active_or_conflicting_core_work_present
- do_not_touch_other_agent_work: true
- ready_for_core_route_review: true
- recommended_next_decision: open_governed_core_prd_route
- next_allowed_action: wait_or_open_later_core_route_when_idle
- idle_governed_core_route_required: true
- no_active_conflicting_core_worktree_required: true
- runtime_default_activation: false
- core_promotion_status: not-promoted
- No Core mutation occurs.
- No Core reservation occurs.
- No Core promotion occurs.
- Do not mutate `../core/`.
- Runtime default activation remains false.
- Do not activate Case as default backend.
- This guard does not authorize another Case run.

## Admission Checks Required Before Future Core Route Request

- Core worktree list read-only check.
- Core main status read-only check.
- Active Core worktree status read-only check.
- Core Sequence Protocol route check.
- Running Core validation process check.
- Idle governed Core route check.
- No active conflicting Core worktree check.
- S135 conflict avoidance check for `CORE-WORK-172` and `core/worktrees/core-keyvault-authmd-promotion-135`.
- Core validator coverage check after a future Core route exists.
- Ownership uncertainty blocks action.

## Blocked Actions

- Do not mutate Core.
- Do not mutate another agent worktree.
- Do not stop another agent process.
- Do not reserve Core.
- Do not open a Core PRD from CTO.
- Do not promote CTO artifacts into Core.
- Do not activate Case as default backend.
- Do not run Case.
- Do not mutate target repositories.

## Decision

The CTO Core Promotion Decision Packet remains ready for Core review, but `recommended_next_decision: open_governed_core_prd_route` is candidate-only. Core route admission is blocked until a later read-only check proves Core is idle or explicitly selected by Core authority.