Unified protocol for every adaptive controller in the DQN trainer.
FireRateStats for controller_activity smoke. DiagSnapshot for
standardised HEALTH_DIAG emission. IsvBus abstraction over pinned
device-mapped memory (&mut [f32] wrapper).
No concrete controller migration yet — Tasks 9-17 migrate existing
controllers (atoms → gamma → Kelly → cql_alpha → tau → epsilon →
conviction_floor → plan_threshold → balancer) one per sub-commit.
Old scaffolding for each controller is removed in the SAME commit
that migrates its last consumer to the new protocol, per
feedback_no_partial_refactor.md.
Tests: 2 unit tests on FireRateStats and DiagSnapshot.
Plan 1 Task 8. Spec §4.C.6.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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