plans/x265: record PROBE-RDO-ARBITER — the self-optimizing axis, measured (0.64)

[AdaWorldAPI]

What

Records PROBE-RDO-ARBITER — the endgame's third and final axis — into the plan's
probe-queue home. The arc measured space (E-X265-MORTON-SHIFT-1), time
(E-3DGS-MU-HYDRATION-2), and now self-optimizing (this probe, the RDO /
free-energy mode arbiter). The probe lives in lance-graph
(crates/helix/examples/rdo_arbiter_probe.rs, PR #754); this repo holds the plan.

Result

PASS → [H]. A free-energy arbiter detects rigid-motion applicability per region
(a real rigid_match search), dispatches MortonShift-vs-Residual by argmin(bits)
(64/64 correct, choice flips with content), and the adaptive composite beats the
fixed (address-substrate-less, x265-like) pipeline by 36% — after paying the
per-region mode-signal overhead. "Self-optimizing" is now a number: 0.64. RDO
mode-decision ≡ active-inference dispatch.

v2 (honest): the residual rate is a bits/px MODEL, not a real entropy coder
(the #1 parity gap); a λ-swept RD frontier + larger ME window are v2; 0.64 is
content-dependent proof-of-mechanism, not a headline number.

Full write-up: lance-graph E-X265-RDO-ARBITER-1.

🤖 Generated with Claude Code

https://claude.ai/code/session_01K3RyLEbuNSHxxB3NTTrGki

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Generated by Claude Code

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Reviewing files that changed from the base of the PR and between 200ba77 and cfe7991.

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• .claude/plans/x265-sprite-replay-probe-v1.md

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