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docs: PROBE-SPRITE-REPLAY spec — x265 I/P/B grammar over HHTL sprites + helix motion; two standing corrections#247

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docs: PROBE-SPRITE-REPLAY spec — x265 I/P/B grammar over HHTL sprites + helix motion; two standing corrections#247
AdaWorldAPI merged 1 commit into
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Summary

Operator-directed next amortization, spec'd crawl-first (plan x265-sprite-replay-probe-v1.md + §5 probe-queue row + blackboard):

  • The thesis: a moving object = an HHTL-anchored Gaussian-splat sprite with a helix direction code as its motion primitive, mapped onto the x265 GOP grammar — I = splat set at anchor, P = ONE helix code per sprite (object-level motion replacing per-block MV search, x265's dominant encode cost), B = parametric interpolation along the helical path. Motion becomes address arithmetic in the Morton cascade; the minimal wgpu harness doubles as PROBE-GPU-LUT's missing harness.
  • Scope guards baked into the spec: NOT H.268, NOT x265 bit-parity (grammar replay on our primitives; x265 only an optional external reference); bit-exactness on the CPU/wasm sprite-state path, wgpu render-grade per C5/C9. KILL band: helix object-motion collapsing back into a dense per-splat MV field.
  • Two standing corrections from the probe-wave round (flagged last cycle): §10(i) honesty amendment (the 3-cache-line tile claim holds only under the analytic Fisher-z canon — a materialized 256² u16 is 128 KB, L2-resident) and the PROBE-WH-MAG-2 deferral amendment (the Skip/Merge/Delta/Escape mode grammar already IS the per-tile escape tier).

Verification

  • Knowledge-doc test suite: 117/117 green.
  • Twin board entry: lance-graph E-SPRITE-IPB-HELIX-1 (companion PR).

🤖 Generated with Claude Code

https://claude.ai/code/session_01K3RyLEbuNSHxxB3NTTrGki


Generated by Claude Code

…+ helix motion) + two standing corrections

New plan x265-sprite-replay-probe-v1.md (operator-directed, crawl-first
scope): moving object = HHTL-anchored Gaussian-splat sprite with a helix
direction code as the motion primitive, mapped onto the x265 GOP
grammar — I = splat set at anchor; P = ONE helix code per sprite
(object-level motion replacing per-block MV search, x265's dominant
encode cost); B = parametric interpolation along the helical path.
Explicitly NOT H.268 and NOT x265 bit-parity; CPU/wasm carries
bit-exactness (sprite states from helix codes, pinned math), wgpu is
render-grade per C5/C9. The minimal wgpu harness doubles as
PROBE-GPU-LUT's missing harness. §5 probe-queue row added with pass/
KILL bands (KILL = helix object-motion collapses into a dense per-splat
MV field).

Standing corrections folded (flagged in the prior round):
- §10(i) honesty amendment: the 192B/3-cache-line tile claim is fully
  honest only under the analytic Fisher-z canon (materialized 256^2 u16
  = 128KB, L2-resident not L1D); analytic drops table residency to 8B
  and rail reads become |delta-i8| arithmetic.
- PROBE-WH-MAG-2 deferral-condition amendment: the Skip/Merge/Delta/
  Escape mode grammar already IS the per-tile escape tier (analog of
  classify_rows_by_lfd Passthrough; shader analog = FailureTicket);
  WH-MAG-2 = WH under the mode grammar.

Blackboard entry appended. Knowledge-doc suite green (117/117).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K3RyLEbuNSHxxB3NTTrGki
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  • .claude/blackboard.md
  • .claude/knowledge/pr-x12-h268-morton-wgpu-synergies.md
  • .claude/plans/x265-sprite-replay-probe-v1.md

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@AdaWorldAPI AdaWorldAPI merged commit 95176af into master Jul 16, 2026
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