---
phase: 109-runtime-compat-surface-prune-contract
plan: 01
type: execute
wave: 1
depends_on:
  - v1.58-milestone-close
files_modified:
  - research/knowledge-hub/tests/test_runtime_compat_surface_cleanup.py
autonomous: true
requirements:
  - REQ-PRUNE-01
  - REQ-PRUNE-02
---

<objective>
Lock the compatibility-surface pruning contract in service tests.
</objective>
