Two compounding things in one commit because they're tightly coupled
(the new violation is what makes the new fixtures meaningful):
(1) DEFLECTION_DETECTED — new soft-demote violation kind.
`aborist.qa.inspect.diagnose_deflection` was a read-only sidecar:
when the question's subject anchor (last content token after
stopword strip) is missing from the answer, it returned
`kind="deflection"`. Useful telemetry but never affected the
verdict. 2026-05-02 fox surfaced two cases where the missing
signal mattered:
Q: "who burns the amazon river?"
A: "Deforestation in the Amazon Rainforest is primarily caused
by human activities..." [E10 | Deforestation of the Amazon
Rainforest]
Pre: EVIDENCE-WARRANTED 1/1 ← silent river→rainforest topic shift
Post: ANCHOR-WARRANTED-PARTIAL 1/2 with DEFLECTION_DETECTED
The verifier now runs diagnose_deflection() after all hard checks.
On `kind == "deflection"` it appends a DEFLECTION_DETECTED
violation (rationale + subject_anchor + overlap_ratio) and caps
audit_mode at HYBRID. Renderer's four-rung ladder picks it up via
`_SOFT_DEMOTE_VIOLATION_KINDS` (cli.py) and demotes EVIDENCE-
WARRANTED → ANCHOR-WARRANTED automatically.
Folds into verifier_policy_hash via new
`claim_lattice_deflection_check_enabled: True` policy field
(defaults on). Bumps the 9-dim cache_key when toggled.
Wired into both verify_claim_lattice (pointer) and
verify_claim_lattice_json (JSON). Deferred import keeps verify.py
module-load clean.
(2) Three live fixtures gating the river/rainforest/deflection family:
- test_amazon_river_burning_who_deflects_or_grounds_river
Gates the silent topic-shift pattern: if model deflects, the
verifier MUST catch it (DEFLECTION_DETECTED present OR
UNGROUNDED OR "river" actually in answer). Failure mode this
catches: EVIDENCE-WARRANTED with rainforest answer to a river
question and no soft-demote.
- test_amazon_river_burning_culture_refused_or_ungrounded
Adversarial-impossible mirror of Mars-BDFL: rivers don't burn,
so model must refuse / deflect / refute. Failure mode:
STRICT/HYBRID with affirmative culture-burns-river claim.
- test_amazon_rainforest_burning_culture_grounds_or_deflection_caught
Feasible-but-framing-specific: corpus has deforestation
content but no "culture" framing. Either grounds with rainforest
content OR a soft-demote/UNGROUNDED catches the framing gap.
Live verified (2026-05-02): all 3 pass against the real Hermes
endpoint. 641 unit tests still pass (deflection check skipped on
fixtures lacking question or rendered_text).
russell@unturf.com
141453b0ee