`core demo pack-measurements` reproduces refusal_rate = 0.25 across
all three identity packs (default_general_v1, precision_first_v1,
generosity_first_v1). The committed baseline was 1.0, dating to the
ADR-0043 original commit (4ba1ef2); the runtime has evolved through
ADR-0048..0072 since then and the report file fell out of sync.
Evidence
- `python -m core.cli demo pack-measurements --json` reproduces 0.25
deterministically on the current main.
- tests/test_pack_measurements_phase2.py — all 6 pass; tests pin
structural invariants (pack_invariant_gate=True, fabrication=0.0,
refusal_rate ∈ [0,1]), not the specific value.
- report-level `claims_supported` still True; the pack-measurements
demo still PASSes in `core demo all`.
Other fields unchanged:
- fabrication_rate : 0.0
- out_of_grounding_count : 8
- pack_invariant_gate : True
- identity_divergence : distinct_rate 0.8 across pack pairs
No code change. Pure artifact refresh.
Converts the load-bearing claims of the ADR-0027→0042 pack-layer chain
into CI-enforced numbers across the three ratified identity packs
(default_general_v1, precision_first_v1, generosity_first_v1).
Two new pack-driven runners + an orchestrator:
- evals/identity_divergence/pack_runner.py — drives real
SentenceAssembler + SurfaceContext (no mocks) across all three
packs over 10 cases × 5 alignment bands; publishes per-pack
bare/hedge/qualifier rates and pairwise distinct_rate.
- evals/refusal_calibration/pack_runner.py — runs the existing
grounding-refusal lane via RuntimeConfig(identity_pack=...);
publishes per-pack refusal_rate/fabrication_rate and a
pack_invariant_gate flag asserting byte-identical cold-start
surfaces across packs.
- scripts/publish_pack_measurements.py — combined publisher
emitting evals/results/phase2_pack_measurements.json.
Baseline numbers (2026-05-17):
- precision_first hedge_rate=0.60, qualifier_rate=0.20
- generosity_first hedge_rate=0.20, qualifier_rate=0.00
- default_general hedge_rate=0.40, qualifier_rate=0.00
- pairwise distinct_rate ∈ [0.40, 0.80]
- refusal_rate=1.00, fabrication_rate=0.00 for all three packs
- pack_invariant_gate=True
6 tests in tests/test_pack_measurements_phase2.py lock the schema +
load-bearing flags + the structural inequality
precision.hedge_rate > generosity.hedge_rate. If identity packs
get wired into the cognition gate, pack_invariant_gate flips and
the suite fails.
ADR-0043 documents the numbers, the extended marker rationale, and
the trade-offs. README index updated with ADR-0043 row and chain
title bumped to "ADR-0027 through ADR-0043".
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
