# test_pre_push_monotonic_ancestor

> TODO: describe what this component does

**Type:** script | **Subsystem:** unknown | **Location:** `tests/unit/test_pre_push_monotonic_ancestor.bats`

## What It Does

T-1843 / T-1829 — pre-push monotonicity gate, ancestor refinement.
Origin: T-1828 (2nd incident of T-1602 class). The T-1603 hook used
`sort -V` only; that proxy conflated "remote is older commit with higher
VERSION (tag-counter reset)" with "HEAD reset to older commit (real
rollback)". T-1829 inception decided GO Candidate C: when local-VERSION
sort-V-lower than remote, check ancestor relation; if remote sha is an
ancestor of local sha, the push is genuinely forward in commit time —
allow. Otherwise (or if remote sha not locally known) fall back to the
strict-block behaviour T-1602 motivated.

## Dependencies (1)

| Component | Relationship | Description |
|-----------|--------------|-------------|
| [audit-yaml-validator](/docs/generated/audit-yaml-validator) | tests | Validate all project YAML files parse correctly. Part of the audit structure section. Added as regression test after T-206 silent corruption. |

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*Auto-generated from Component Fabric. Card: `tests-unit-test_pre_push_monotonic_ancestor.yaml`*
*Last verified: 2026-05-14*
