Builds the L11 lived-spine half on top of Shape B+ T-resume: prove the
continuous/resumed life is the SAME identity, with a content-derived, hash-chained
lineage and a falsifiable behavioral proof.
- core/engine_identity.py (L11-1): EngineIdentity = sha256 of the ratified
PERSONALITY substrate (identity/safety/ethics/register/anchor-lens pack files)
+ code revision. Content-derived, NOT entropy — same substrate => same identity
(cross-engine portable). The "who am I" hash; bumped by a ratified identity
change, NOT by lived learning (that is experience, carried by Shape B+).
- engine_state + chat/runtime (L11-2): every checkpoint manifest stamps
engine_identity + parent_engine_identity (git-like lineage). Stable substrate
=> identity == parent (one continuous life); a ratified change => the bump.
- chat/runtime + config (L11-3): on reboot, recompute identity and compare to the
stamped one. Mismatch (substrate changed while down) surfaces a warning +
identity_continuity_break flag; strict_identity_continuity (opt-in) refuses
(IdentityContinuityError). Default warns — reboot is recovery, not control flow
(ADR-0157); the operator must not be bricked by a benign ratified pack swap.
- tests (L11-4): the proof. Continuity is SUFFICIENT (byte-identical resume +
no break under a fixed identity), identity is LOAD-BEARING (distinct packs =>
distinct hashes), and the CONTRAPOSITIVE holds (resuming under a different
identity raises the break). Same identity <=> continuous; different => break.
Test hygiene (required by L11's always-on identity stamping): conftest isolates
the default engine_state dir per test; the refusal-calibration cold-start probe
uses no_load_state=True. Both prevent cross-test identity-lineage pollution.
19 dedicated tests; curated smoke green (no spurious break warnings).
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>
Two Tier 4.5 lanes graduate to passing:
refusal_calibration: 0.00 → 1.00 refusal_rate, 0.00 fabrication,
1.00 in_grounding_answer_rate.
- chat/runtime.py: _UNKNOWN_DOMAIN_SURFACE reworded to "I don't know
— insufficient grounding for that yet." (matches lane refusal
markers; was equivalent in spirit but unrecognizable).
- evals/refusal_calibration/runner.py: per-case `prime` field replays
brief priming turns before the probe. Necessary because ChatRuntime
cold-starts with an empty vault; "in-grounding" only counts as
grounded if the session has actually been told something relevant.
Previous 1.00 in_grounding rate was a false positive (gate was
firing on these too, but the surface text didn't match markers).
articulation_of_status: 0.00 → 1.00 speculative_articulation, 0.60
→ 0.00 false_certainty.
- core/cognition/pipeline.py: CognitiveTurnPipeline tracks subjects
of prior SPECULATIVE teaching proposals (parsed-triple subject
plus ≥4-char tokenized split, so prefixed parses like
"correction: wisdom" still match "What is wisdom?"). On a later
turn that references one of those subjects, or that carries a
reflexive query shape ("is your answer confirmed?", "has this
been reviewed?"), prepends "(speculative, not yet reviewed)" to
the surface. Teach turn itself does not self-mark; only
subsequent probes do.
Lane contracts updated to reflect graduation. CLAIMS.md Tier 4.5
rows for both lanes now CLOSED. docs/truth_seeking_schema.md
§Realizer-side surface gaps closed and rewritten.
Verified: smoke (67), cognition (121), runtime (19), teaching (17),
architectural invariants (40) — all green.
Audit of the one-mutation-path invariant (ADR-0021 §3) found three leaks
where pack authority or session-state writes could substitute for coherence
judgment. All three landed fixes or partial closures in this push.
Leaks closed:
- Leak A: pack vocab defaulted to COHERENT — flipped to SPECULATIVE in
language_packs/{compiler,schema}.py; docstring corrected to align with
ADR-0021 (it was rationalizing the leak).
- Leak B: vault.recall was epistemic-blind — VaultStore.store() now stamps
every entry with EpistemicStatus (default SPECULATIVE); recall(min_status=)
filters to admissible-as-evidence tier. All 4 vault-write sites updated.
- Leak C (write-side): generate/proposition.py:198 stored articulated
propositions unmarked — now stamps SPECULATIVE, breaking the
fabrication-feedback loop in principle. Read-side audit of 5 call sites
is the residual.
New architectural invariants (tests/test_architectural_invariants.py):
- INV-21: one-mutation-path allowlist (caught Leak C on first run)
- INV-22: pack lexicon default is SPECULATIVE (Leak A guard)
- INV-23: vault recall epistemic-aware (Leak B guard)
New eval lanes:
- teaching_injection_resistance — ships GREEN at 1.00/1.00/0 (the
structural anti-injection claim is real and measurable)
- refusal_calibration — honest gap: 0% refusal, 0% fabrication
- contradiction_detection — honest gap: 50% flag via versor-delta heuristic,
100% false-positive; motivates the proper coherence-checker
- articulation_of_status — honest gap: 0% speculative articulation, 60%
false certainty; output-side leak surface
New benchmarks:
- benchmarks/footprint.py — total deployed runtime is 7.06 MiB
(109,358x smaller than Llama 3.1 405B, runs offline, no GPU)
- benchmarks/learning_curve.py — monotonic + replay-deterministic curve
per lane
Documentation:
- docs/truth_seeking_schema.md — foundational architectural commitment,
five rules, mapped to human failure modes, leaks published openly
- evals/CLAIMS.md — five-tier public claims doc; Tier 4.5 publishes
known gaps with named fixes; verification contract at top
- README.md — new pillar between algebraic substrate and language pillar
Includes in-flight formation pipeline scaffolding (formation/, tests/formation/,
docs/formation_pipeline_plan.md) and minor CLI/contracts/gitignore edits
that were already in the working tree at session start.
Verification: 798 passed, 2 skipped, 1 deselected (pre-existing pack-count
test drift unrelated to schema changes).
