core/chat
Shay 51aad0c2cd feat(adr-0065): OOV cliff → five-tier honesty gradient (Phase 2.1 + 2.2)
Replaces the flat "I don't know — insufficient grounding" disclosure
with a deterministic gradient that names specific vocabulary gaps
and gives operators concrete next steps.

P2.1 — OOV "teach me" surface (chat/oov_surface.py).

  When the intent classifier extracts a clean subject lemma but that
  lemma is not resident in any mounted lexicon pack, the runtime now
  emits a deterministic learning-invitation surface tagged
  ``grounding_source="oov"`` instead of the universal disclosure.

  Surface format (fixed template):

    "I haven't learned '{token}' yet (intent: {intent}).
     Mounted lexicon packs: {pack_list}.
     Teach me via a reviewed PackMutationProposal."

  The OOV token passes through ``core._safe_display.safe_display``
  before persistence — user-input sanitization at the trust boundary.
  No vocabulary is invented; no domain is inferred.  Honours the
  ADR-0027 proposal-only invariant: the surface invites a reviewed
  pack mutation, never silently mutates any pack.

  Refactored ``_maybe_pack_grounded_surface`` so every existing
  intent branch (COMPARISON / CAUSE / VERIFICATION / CORRECTION /
  PROCEDURE / DEFINITION+RECALL) falls through on a None composer
  result instead of early-returning.  The OOV invitation is the
  deterministic fall-through for any clean-subject prompt whose
  subject doesn't resolve.

P2.2 — Partial-grounding tier (chat/partial_surface.py).

  When exactly one of two COMPARISON lemmas resolves, the runtime
  emits a hedged surface that grounds the known side verbatim and
  disclaims the OOV side explicitly:

    "Whatever '{oov}' is, I can ground '{known}' — pack-grounded
     ({pack_id}): {d1}; {d2}.  I cannot ground the comparison
     without learning '{oov}' — teach me via a reviewed
     PackMutationProposal."

  Tagged ``grounding_source="partial"``.  Falls through to OOV
  invitation when both lemmas are OOV, and to full pack-grounded
  COMPARISON when both resolve — partial is the middle tier in the
  five-tier gradient.

  Also normalises trailing sentence punctuation on
  intent.secondary_subject at the COMPARISON boundary so prompts
  like "Compare A and B." (with the period) still resolve B
  correctly.

Five-tier gradient (vault → teaching → pack → partial → oov → none).

Test debt retired: four pre-existing tests asserted "OOV → universal
disclosure", which is exactly the contract P2.1/P2.2 inverted.
Rewritten to the new contract.  Plus test_procedure_surface.py
gained a test for the OOV gradient on procedure intents.

Verification:
  tests/test_oov_surface.py                       22 passed
  tests/test_partial_surface.py                   16 passed
  Cognition eval byte-identical:
    public  100% / 100% / 91.7% / 100%
    holdout 100% / 100% / 83.3% / 100%
  Curated lanes all green.
2026-05-18 16:41:45 -07:00
..
__init__.py Add live chat runtime 2026-05-13 20:40:56 -07:00
__main__.py Add live chat runtime 2026-05-13 20:40:56 -07:00
oov_surface.py feat(adr-0065): OOV cliff → five-tier honesty gradient (Phase 2.1 + 2.2) 2026-05-18 16:41:45 -07:00
pack_grounding.py feat(adr-0063): cross-pack surface resolver — kinship lemmas ground on live path 2026-05-18 15:00:58 -07:00
pack_resolver.py feat(adr-0063): cross-pack surface resolver — kinship lemmas ground on live path 2026-05-18 15:00:58 -07:00
partial_surface.py feat(adr-0065): OOV cliff → five-tier honesty gradient (Phase 2.1 + 2.2) 2026-05-18 16:41:45 -07:00
refusal.py feat(adr-0037,adr-0038): per-predicate ethics refusal + hedge injection 2026-05-17 21:23:28 -07:00
runtime.py feat(adr-0065): OOV cliff → five-tier honesty gradient (Phase 2.1 + 2.2) 2026-05-18 16:41:45 -07:00
teaching_grounding.py feat(adr-0064): cross-pack teaching chains + relations_chains_v1 seed (Phase 1.3+1.4) 2026-05-18 16:04:20 -07:00
telemetry.py feat(adr-0059): correction-pass telemetry emission — backward perturbation auditable 2026-05-18 13:47:48 -07:00
verdicts.py feat(adr-0039): audit completeness — TurnVerdicts bundle, stub TurnEvent, hedge_injected 2026-05-17 21:32:46 -07:00