The disposes half of the propose->verify loop. Catches the plausible lie a
grammar check never sees: fluent, confident, wrong.
GROUNDING (anti-hallucination): fit a claim point against every real evidence
neighborhood via engram_reason_point_fit; grounded iff best fit clears an
absolute threshold. Off-model orthogonal residual is the hallucination signal.
Distinct from abduction: asks 'is there any real support at all' and may say no.
CONSISTENCY (contradiction): (a) polarity/negation inversion -- claim lands on
the opposite side of a real polarity axis from the grounded truth (the
reassurance->accusation catch: 'never fought'->'argued'); (b) geometric --
claim inside a forbidden region or beyond a max-distance constraint.
Pure C11, read-only, composes existing primitives only. 29 constructed-case
checks, 0 failures across PERF and ASan/UBSan; macOS leaks 0. el-exposure
deferred (point/variadic-set inputs -- matches reasoning-agent precedent).
Reach checks (formal/causal/predictive) not started; documented.
will.anderson
ca13471745