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memlnaut-nisps/manifold/tests/fixtures/curves-golden.json
monkey-w1n5t0n 846a0c373a feat(manifold)!: route input/output pipelines + curves through the WASM core (P4.3/P4.4) 
One-core-engine P4.3/P4.4: the input/output pipeline processing and the curve
catalog now live in the C++/WASM core (nisps/pipeline/*, nisps/core/math.hpp).
The TS ports are deleted and the browser drives the WASM chains.

Engine:
- WasmIML owns a nisps_pipeline_create handle + bridge buffers and exposes
  setInputConfig (TS InputConfig → 15-float wire), processInput, resetInput,
  setOutputConfig (Infinity slew → 0), setOutputFreezeMask, processOutput
  (in place), resetOutput, curveApply, curveApplyBatch (chunked). Handle +
  buffers created in init_, freed in dispose, output-sized buffers realloc'd
  on reshape.
- Spine routes setInputs through iml.processInput/processOutput (state lives
  C++-side); config source-of-truth stays TS-side and is pushed on attach /
  setInputConfig / setOutputConfig. Preserves ?debug=1 fixed-dt determinism
  (same dt fed to the WASM calls). EngineApi gains setInputConfig/
  setOutputConfig/curveApply/curveApplyBatch.
- New types-only modules: pipeline-types.ts (InputConfig/OutputConfig +
  defaults + wire int mappers) and curve-catalog.ts (CurveName + name→id).
  types.ts declares the pipeline/curve C ABI. engine barrel updated.
- DELETED src/engine/{input-pipeline,output-pipeline,curves}.ts.

Tests (P4.4 gate — recorded-gesture regression):
- pipeline-golden.test.ts now loads the built WASM (indirect-eval shim,
  tests/wasm-load.ts) and drives the frozen gesture/output fixtures through the
  C++ chains, honouring the per-event dt clock contract. Tolerance 1e-5
  (non-momentum drift <5e-7). The 3 momentum configs carry 1e-2: proven-inherent
  f32 drift (a byte-faithful f32 port of the exact original algorithm matches
  the WASM to <6e-8 while both diverge from the f64 capture by ~7-9e-3), NOT a
  core bug.
- curves-golden.json: linear/square/sqrt/centered_power kept as the original
  f64 captures (C++ matches within <3e-8); exp/log/sigmoid/cubic RE-BASELINED
  from the WASM (deliberate switch to firmware-exact k=1 exp/log, slope-6
  sigmoid, true cubic x^3). Provenance recorded in-file.
- _generate.ts rebuilt as the WASM curve re-baseline tool; pipeline-golden-lib
  trimmed to pure data builders.

Docs: fixtures/README.md + manifold/ONBOARDING.md updated.

Gates: typecheck, bun test (9), vite build, playwright e2e (27) all green.
2026-07-18 12:21:35 +02:00

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{
"description": "Curve catalog sampled at 129 points x in [0,1] inclusive. linear/square/sqrt/centered_power are the original 2026-07-13 f64 TS captures (behaviour unchanged); exp/log/sigmoid/cubic RE-BASELINED from the canonical C++/WASM core (nisps/core/math.hpp) on the 2026-07-18 P4 migration — see provenance and README.",
"captured": "2026-07-13",
"note": "Captured from the TS engine implementations before the P4 one-core-engine migration. See tests/fixtures/README.md.",
"sampleCount": 129,
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},
"provenance": {
"unchanged": {
"curves": [
"linear",
"square",
"sqrt",
"centered_power"
],
"source": "TS f64 capture 2026-07-13; C++ core matches within 1e-5 (no behaviour change)."
},
"rebaselined": {
"curves": [
"exp",
"log",
"sigmoid",
"cubic"
],
"date": "2026-07-18",
"source": "nisps/core/math.hpp via nisps_curve_apply (WASM). The old TS curves.ts used k=4 exp/log, slope-8 sigmoid, smoothstep cubic; the canonical catalog uses k=1-normalised exp/log, slope-6 sigmoid, true cubic x^3. The browser now adopts the firmware-exact behaviour."
}
}
}
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