core/HANDOFF-gpt55-2026-06-18.md

HANDOFF — gpt55 — 2026-06-18

Agent and Session

• Agent: gpt55
• Date: 2026-06-18
• Reasoning effort used: high
• Grok Build mode used: not applicable; Codex default mode
• Session entry point: Implement PR #831 brief: bind ProblemFrame relations and measure organ-contract readiness; write results to the requested handoff path.

Smoke Suite + Bootstrap Status

uv run python -m core.cli test --suite smoke -q
108 passed in 123.64s

The repository has no callable core-bootstrap skill in this session. The GPT55 checklist was completed manually: instructions, runtime contracts, recent handoff, dirty state, baseline smoke, scope, pre-edit sweep, and invariant statement.

Modules Touched

File	Change type	Summary
generate/kernel_facts.py	modified	Added frozen mention, binding, bound-role, and bound-relation primitives.
generate/problem_frame.py	modified	Added bound question target and canonical frame collections.
generate/problem_frame_builder.py	modified	Added conservative span-grounded extraction, binding, relation construction, target grounding, and centralized punctuation-safe surface matching.
generate/problem_frame_contracts.py	created	Added pure diagnostic contract assessments and gap-based migration recommendation.
scripts/gsm8k_problem_frame_adequacy.py	created	Added gold-independent adequacy reporting.
scripts/gsm8k_substrate_morphology.py	modified	Replaced trigger-priority recommendations with contract-gap evidence and centralized boundary recognition.
tests/test_problem_frame_builder.py	modified	Added mention/span, quantity/entity/unit binding, transfer relation, target, and determinism coverage.
tests/test_problem_frame_contracts.py	created	Added missing/runnable percent contract tests.
tests/test_gsm8k_problem_frame_adequacy.py	created	Added adequacy report smoke coverage.
tests/test_gsm8k_morphology_missing_kernel_labels.py	modified	Added punctuation boundary and contract-gap planner expectations.
docs/analysis/problemframe-bindings-contract-readiness-2026-06-18.md	created	Recorded model, metrics, deferral rationale, and migration conditions.
HANDOFF-gpt55-2026-06-18.md	created	Session continuity and verification record.

Invariants Verified

Invariant	Check performed	Result	Notes
versor_condition(F) < 1e-6	Scope trace + smoke suite	preserved	No algebra, field state, operator, or normalization path changed.
versor_apply / cga_inner exactness	Import/call-site sweep	untouched	No algebra or recall imports added.
Normalization boundaries respected	Diff review	pass	No normalization/unitization/repair added.
No approximate recall	Diff review	pass	No vault or ranking changes.
No answer admission	Train/holdout serving probes	pass	Train 30 correct / 20 refused / 0 wrong; holdout 5 / 495 / 0.
No unreviewed mutation	Diff/status review	pass	Diagnostic-only; no teaching, pack, report, or sealed artifact mutation.
Exact source evidence	Focused tests	pass	Mention and contract evidence uses original source spans.

Subagent / Arena Reconciliation

• Number of subagents spawned: 0
• Each subagent independently verified versor closure: not applicable
• Reconciliation: not applicable

Tests Run

tests/test_problem_frame_builder.py: 12 passed
tests/test_gsm8k_morphology_missing_kernel_labels.py: 8 passed
tests/test_kernel_no_new_legacy_derivation_surfaces.py: 2 passed
tests/test_problem_frame_contracts.py: 2 passed
tests/test_gsm8k_problem_frame_adequacy.py: 1 passed
core test --suite smoke -q: 108 passed
git diff --check: pass

Safety probes:

train_sample: correct=30 refused=20 wrong=0; wrong_ids=[]
holdout_dev: correct=5 refused=495 wrong=0; wrong_ids=[]

Adequacy after implementation:

train 50: entity=50 quantity_binding=46 relation=16 bound_target=42 candidates=42 runnable=1
holdout 500: entity=494 quantity_binding=452 relation=124 bound_target=402 candidates=423 runnable=1

Open Tasks / Next Session Entry Point

1. Review the conservative local grammar against adequacy gap distributions; widen only with confuser tests and exact spans.
2. Bind container and labor-rate roles before allowing their contracts to become runnable.
3. Do not migrate percent_partition until runnable coverage and no-fallback organ consumption are proven beyond case 0046.

Known Hazards / Do Not Touch

• contract_runnable_count=1 in each corpus is intentionally conservative; do not replace it with trigger presence.
• Case gsm8k-train-sample-v1-0046 is diagnostic evidence only, not serving authorization.
• Do not add raw-text fallback inside derivation organs or mutate report.json/sealed artifacts.

Architectural Decisions Made This Session

• The canonical ProblemFrame owns mentions, bindings, relations, and target state; no parallel diagnostic graph.
• subgroup_partition and percent_of are distinct, and readiness requires matching subgroup referents.
• Contract assessment is a pure projection over typed frame evidence.
• Punctuation-safe token boundary matching is centralized in the ProblemFrame builder and reused by morphology.

What Must Not Be Forgotten

contract_runnable_count, not process-trigger presence, is the honest migration-readiness metric. Serving remains unchanged.

Skills Used This Session

• core-bootstrap: unavailable; checklist performed manually
• versor-coherence-guardian: unavailable; scope + smoke verification performed manually
• pre-edit-sweep: unavailable; import/caller/eval/test sweep performed manually
• claim-proposal-guardian: not applicable; no claim or proposal mutation
• Other: none