_orient_result_to_anchor used np.dot (Euclidean dot product) alongside
cga_inner to decide hemisphere flips. When CGA inner was positive
(correct hemisphere) but Euclidean was negative, the flip negated CGA
alignment — making correctly-oriented fields rank last in vault recall.
Changes:
- Move hemisphere check into finalize_turn so all paths (ChatRuntime,
SessionContext.respond) get consistent protection.
- Use CGA inner product only, removing the forbidden Euclidean metric.
- Remove _orient_result_to_anchor (subsumed by finalize_turn).
- Remove SessionContext.arespond (dead code, no callers).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
_farther_unrelated searched for grade-1 reflectors whose cga_inner
score was below the prompt score. Field states are even-grade
(grade 0+2+4), so cga_inner with a grade-1 reflector is always zero
— making the search impossible when prompt_score is negative.
Replaced with _random_rotor (product of two reflectors) which lives
in the same even-grade subspace and produces nonzero inner products.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
