generate/stream.py is a CLAUDE.md-forbidden normalization site, yet _close_final_state
re-closed the walk's final state with unitize_versor. The walk is built entirely from
versor_apply / Spin-manifold rotors (persona voicing, recall transitions, propagate_step),
so versor_condition < 1e-6 holds on the output BY CONSTRUCTION — the final unitize was a
true no-op (measured: final_state versor_condition = 2.98e-17 WITH and WITHOUT it).
- Remove _close_final_state + its unitize_versor import; GenerationResult.final_state=current.
- Reframe the "Drift fix 2" comment -> "recall-confidence weighting" (a selection policy,
not normalization; mislabeled per the L10 Decision 0 bright line).
- Test-first: add test_generated_final_state_satisfies_versor_condition_by_construction
(exercises voicing + seeded-vault recall); green before AND after removal.
Brings stream.py into forbidden-sites compliance.
