Final PR of the matcher-extension wave. Ships:
1. tests/test_me5_all_categories_integration.py — 4 new tests:
- test_all_three_canaries_admit_through_full_pipeline: stages a
pack with all three SAFE_COMPOSITION_CATEGORIES entries +
ratifies, runs Maria/Sam/Tom canaries through matcher →
inject_from_match, asserts admission for all three
- test_partial_pack_only_admits_present_categories: refusal-
preferring when only one category is ratified
- test_all_safe_categories_have_extension_admission: pins that
SAFE_COMPOSITION_CATEGORIES is exactly the three covered
categories (breaks if future ADR widens without matcher)
- test_falsifies_uniformly_suppresses_across_categories:
polarity discipline holds across all three matchers
2. docs/handoff/ME1-ME5-MILESTONE.md — wave milestone doc:
- architecture diagram (audit → ratify → compile → load →
match → consult → admit)
- SAFE_COMPOSITION_CATEGORIES coverage matrix
- invariants preserved across the entire stack
- scope boundary (what does NOT fire yet — RAT-1 follow-up)
- recommended next dispatch
3. Test registration in core/cli.py packs suite.
Across the full ME-1..ME-5 stack:
- 5 stacked PRs (#400/#401/#402/#403/#404)
- 1 foundation PR (#398 — consumption wiring)
- 114 new tests, all green
- packs suite 127 passed
- core eval gsm8k_math --split public → 150/150, wrong=0
- All three SAFE_COMPOSITION_CATEGORIES have matcher extensions
Anti-regression invariants preserved across the entire stack:
- wrong == 0 on public split
- Case 0050 hazard pin (parametrized over all three categories)
- ADR-0166 — no new eval lanes
- ADR-0167 partition — no cognition imports
- ADR-0169 mutation boundary — registry is a gate, not arithmetic
- All matcher detection paths byte-identical
- engine_state/* never committed
- SAFE_COMPOSITION_CATEGORIES enforced at write AND load
- polarity falsifies honored uniformly
Live train_sample admission requires operator-seeded ratifications
(RAT-1 follow-up). Wiring is end-to-end correct, verified by ME-5
integration tests.
Memory: milestone-me1-me5-matcher-extensions-complete saved.
Stacks on PR #403 (base: feat/matcher-extension-subtractive).
