Holds perception outputs (slots 0..13) on-device; slow-path write/snapshot
go through MappedF32Buffer DtoD per the htod/htoh discipline. Slot
semantics documented in design spec Section 7.
Also deletes examples/alpha_mamba_baseline.rs which Task 1 left orphaned
(used the deleted eval + training modules). Task 17 will rebuild the
Mamba2 baseline trainer path inside gate/cfc_vs_mamba2.rs against the
new Phase A loader.
Tests pass on local sm_86 (3/3): round-trip one slot, 32-slot capacity,
multi-slot independent writes.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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