feat(nvsim): full simulator stack — Rust crate, dashboard, server, App Store, Ghost Murmur [ADR-089/090/091/092/093]

Squashed merge of feat/nvsim-pipeline-simulator (29 commits).

## Shipped

- ADR-089 nvsim crate (Accepted) — 50/50 tests, ~4.5 M samples/s, pinned witness cc8de9b01b0ff5bd…
- ADR-092 dashboard implementation (Implemented) — 8/12 §11 gates , 4/12 ⚠ (external infra)
- ADR-093 dashboard gap analysis (Implemented) — 21/21 catalogued gaps closed
- Plus ADR-090 (proposed conditional) and ADR-091 (proposed research-only)

## Live deploy
https://ruvnet.github.io/RuView/nvsim/

## Infra

- nvsim-server Dockerfile + GHCR publish workflow (.github/workflows/nvsim-server-docker.yml)
- axe-core + Playwright cross-browser CI (.github/workflows/dashboard-a11y.yml)
- gh-pages auto-deploy workflow already in place (preserves observatory + pose-fusion siblings)

Co-Authored-By: claude-flow <ruv@ruv.net>
This commit is contained in:
rUv
2026-04-27 12:41:01 -04:00
committed by GitHub
parent 905b680747
commit 7f5a692632
70 changed files with 20533 additions and 0 deletions
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/* Common NvsimClient interface — both WasmClient and WsClient implement it.
* Dashboard binds to this interface and never to a concrete client.
* Aligns with ADR-092 §5.2.
*/
export interface PipelineConfigJson {
digitiser?: {
f_s_hz: number;
f_mod_hz: number;
lp_cutoff_hz?: number;
};
sensor?: {
gamma_fwhm_hz?: number;
t1_s?: number;
t2_s?: number;
t2_star_s?: number;
contrast?: number;
n_spins?: number;
n_centers?: number;
shot_noise_disabled?: boolean;
};
dt_s?: number | null;
}
export interface SceneJson {
dipoles: { position: [number, number, number]; moment: [number, number, number] }[];
loops: {
centre: [number, number, number];
normal: [number, number, number];
radius: number;
current: number;
n_segments: number;
}[];
ferrous: {
position: [number, number, number];
volume: number;
susceptibility: number;
}[];
eddy: unknown[];
sensors: [number, number, number][];
ambient_field: [number, number, number];
}
export interface MagFrameRecord {
magic: number;
version: number;
flags: number;
sensorId: number;
tUs: bigint;
bPt: [number, number, number];
sigmaPt: [number, number, number];
noiseFloorPtSqrtHz: number;
temperatureK: number;
raw: Uint8Array;
}
export interface MagFrameBatch {
frames: MagFrameRecord[];
bytes: Uint8Array;
}
export type NvsimEvent =
| { type: 'log'; level: 'info' | 'warn' | 'err' | 'dbg' | 'ok'; msg: string }
| { type: 'witness'; hex: string }
| { type: 'fps'; value: number }
| { type: 'state'; running: boolean; t: number; framesEmitted: number };
export interface RunOpts { frames?: number }
/** One-shot pipeline run for "what would the sensor recover at this scene?"
* use cases. Doesn't disturb the running pipeline. */
export interface TransientRunResult {
bRecoveredT: [number, number, number];
bMagT: number;
noiseFloorPtSqrtHz: number;
sigmaPt: [number, number, number];
nFrames: number;
witnessHex: string;
}
export interface NvsimClient {
loadScene(scene: SceneJson): Promise<void>;
setConfig(cfg: PipelineConfigJson): Promise<void>;
setSeed(seed: bigint): Promise<void>;
reset(): Promise<void>;
run(opts?: RunOpts): Promise<void>;
pause(): Promise<void>;
step(direction: 'fwd' | 'back', dtMs: number): Promise<void>;
onFrames(cb: (batch: MagFrameBatch) => void): void;
onEvent(cb: (ev: NvsimEvent) => void): void;
generateWitness(samples: number): Promise<Uint8Array>;
verifyWitness(expected: Uint8Array): Promise<{ ok: true } | { ok: false; actual: Uint8Array }>;
exportProofBundle(): Promise<Blob>;
runTransient(scene: SceneJson, config: PipelineConfigJson, seed: bigint, samples: number): Promise<TransientRunResult>;
buildId(): Promise<string>;
close(): Promise<void>;
}
/** Parse one MagFrame from a 60-byte slice. Layout matches `nvsim::frame`. */
export function parseMagFrame(view: DataView, offset: number, raw: Uint8Array): MagFrameRecord {
// v1 layout: magic(u32) | version(u16) | flags(u16) | sensor_id(u16) | _reserved(u16) |
// t_us(u64) | b_pt[3](f32) | sigma_pt[3](f32) | noise_floor_pt_sqrt_hz(f32) |
// temperature_k(f32) — 60 bytes total. All little-endian.
const magic = view.getUint32(offset + 0, true);
const version = view.getUint16(offset + 4, true);
const flags = view.getUint16(offset + 6, true);
const sensorId = view.getUint16(offset + 8, true);
// skip 2 bytes reserved at offset+10
const tUs = view.getBigUint64(offset + 12, true);
const bx = view.getFloat32(offset + 20, true);
const by = view.getFloat32(offset + 24, true);
const bz = view.getFloat32(offset + 28, true);
const sx = view.getFloat32(offset + 32, true);
const sy = view.getFloat32(offset + 36, true);
const sz = view.getFloat32(offset + 40, true);
const noiseFloorPtSqrtHz = view.getFloat32(offset + 44, true);
const temperatureK = view.getFloat32(offset + 48, true);
return {
magic,
version,
flags,
sensorId,
tUs,
bPt: [bx, by, bz],
sigmaPt: [sx, sy, sz],
noiseFloorPtSqrtHz,
temperatureK,
raw: raw.subarray(offset, offset + 60),
};
}
export function parseFrameBatch(bytes: Uint8Array): MagFrameRecord[] {
const frameSize = 60;
const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
const out: MagFrameRecord[] = [];
for (let off = 0; off + frameSize <= bytes.byteLength; off += frameSize) {
out.push(parseMagFrame(view, off, bytes));
}
return out;
}
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/* Default `NvsimClient` implementation. Talks to the Web Worker that
* hosts the nvsim WASM module. ADR-092 §5.4 + §6.3. */
import {
type NvsimClient,
type SceneJson,
type PipelineConfigJson,
type RunOpts,
type MagFrameBatch,
type NvsimEvent,
type TransientRunResult,
parseFrameBatch,
} from './NvsimClient';
interface PendingRequest<T = unknown> {
resolve: (v: T) => void;
reject: (err: Error) => void;
}
export interface WasmBootInfo {
buildVersion: string;
frameMagic: number;
frameBytes: number;
expectedWitnessHex: string;
}
export class WasmClient implements NvsimClient {
private worker: Worker;
private nextId = 1;
private pending = new Map<number, PendingRequest<unknown>>();
private frameSubs = new Set<(b: MagFrameBatch) => void>();
private eventSubs = new Set<(e: NvsimEvent) => void>();
private bootInfo: WasmBootInfo | null = null;
constructor() {
this.worker = new Worker(new URL('./worker.ts', import.meta.url), { type: 'module' });
this.worker.addEventListener('message', (ev) => this.onMessage(ev));
this.worker.addEventListener('error', (e) =>
this.eventSubs.forEach((s) => s({ type: 'log', level: 'err', msg: String(e.message) })),
);
}
private onMessage(ev: MessageEvent): void {
const m = ev.data as { type: string; id?: number; [k: string]: unknown };
if (m.type === 'frames') {
const buf = m.batch as ArrayBuffer;
const bytes = new Uint8Array(buf);
const frames = parseFrameBatch(bytes);
const batch: MagFrameBatch = { frames, bytes };
this.frameSubs.forEach((s) => s(batch));
const fps = m.fps as number;
if (fps > 0) {
this.eventSubs.forEach((s) => s({ type: 'fps', value: fps }));
}
return;
}
if (m.type === 'state') {
this.eventSubs.forEach((s) =>
s({
type: 'state',
running: Boolean(m.running),
t: 0,
framesEmitted: Number(m.framesEmitted ?? 0),
}),
);
return;
}
if (m.type === 'ready') {
return;
}
if (m.type === 'err' && m.id == null) {
this.eventSubs.forEach((s) =>
s({ type: 'log', level: 'err', msg: String(m.msg) }),
);
return;
}
if (typeof m.id === 'number' && this.pending.has(m.id)) {
const p = this.pending.get(m.id)!;
this.pending.delete(m.id);
if (m.type === 'err') p.reject(new Error(String(m.msg)));
else p.resolve(m);
}
}
private rpc<T = unknown>(msg: Record<string, unknown>, transfer: Transferable[] = []): Promise<T> {
const id = this.nextId++;
return new Promise<T>((resolve, reject) => {
this.pending.set(id, { resolve: resolve as (v: unknown) => void, reject });
this.worker.postMessage({ ...msg, id }, transfer);
});
}
async boot(): Promise<WasmBootInfo> {
if (this.bootInfo) return this.bootInfo;
// Pass Vite's resolved BASE_URL so the worker can locate /nvsim-pkg/
// under the same prefix the dashboard is served from (e.g. /RuView/nvsim/
// on GitHub Pages, "/" in dev).
const base = import.meta.env.BASE_URL ?? '/';
const r = await this.rpc<{ buildVersion: string; frameMagic: number; frameBytes: number; expectedWitnessHex: string }>(
{ type: 'boot', base },
);
this.bootInfo = {
buildVersion: r.buildVersion,
frameMagic: r.frameMagic,
frameBytes: r.frameBytes,
expectedWitnessHex: r.expectedWitnessHex,
};
return this.bootInfo;
}
async loadScene(scene: SceneJson): Promise<void> {
await this.rpc({ type: 'setScene', json: JSON.stringify(scene) });
}
async setConfig(cfg: PipelineConfigJson): Promise<void> {
await this.rpc({ type: 'setConfig', json: JSON.stringify(cfg) });
}
async setSeed(seed: bigint): Promise<void> {
await this.rpc({ type: 'setSeed', seed: Number(seed & 0xFFFFFFFFn) });
}
async reset(): Promise<void> {
await this.rpc({ type: 'reset' });
}
async run(_opts?: RunOpts): Promise<void> {
await this.rpc({ type: 'run' });
}
async pause(): Promise<void> {
await this.rpc({ type: 'pause' });
}
async step(_direction: 'fwd' | 'back', _dtMs: number): Promise<void> {
await this.rpc({ type: 'step' });
}
onFrames(cb: (batch: MagFrameBatch) => void): void { this.frameSubs.add(cb); }
onEvent(cb: (ev: NvsimEvent) => void): void { this.eventSubs.add(cb); }
async generateWitness(samples: number): Promise<Uint8Array> {
const r = await this.rpc<{ witness: ArrayBuffer; hex: string }>({ type: 'witnessGenerate', samples });
return new Uint8Array(r.witness);
}
async verifyWitness(expected: Uint8Array): Promise<{ ok: true } | { ok: false; actual: Uint8Array }> {
const buf = expected.slice().buffer;
const r = await this.rpc<{ ok: boolean; actual: ArrayBuffer; actualHex: string }>(
{ type: 'witnessVerify', samples: 256, expected: buf },
[buf],
);
if (r.ok) return { ok: true };
return { ok: false, actual: new Uint8Array(r.actual) };
}
async runTransient(
scene: SceneJson,
config: PipelineConfigJson,
seed: bigint,
samples: number,
): Promise<TransientRunResult> {
const r = await this.rpc<{
bRecoveredT: number[];
bMagT: number;
noiseFloorPtSqrtHz: number;
sigmaPt: number[];
nFrames: number;
witnessHex: string;
}>({
type: 'runTransient',
scene: JSON.stringify(scene),
config: JSON.stringify(config),
seed: Number(seed & 0xFFFFFFFFn),
samples,
});
return {
bRecoveredT: [r.bRecoveredT[0], r.bRecoveredT[1], r.bRecoveredT[2]],
bMagT: r.bMagT,
noiseFloorPtSqrtHz: r.noiseFloorPtSqrtHz,
sigmaPt: [r.sigmaPt[0], r.sigmaPt[1], r.sigmaPt[2]],
nFrames: r.nFrames,
witnessHex: r.witnessHex,
};
}
async exportProofBundle(): Promise<Blob> {
// Bundle = REFERENCE_SCENE_JSON + computed witness hex + version. Wraps
// the same artifacts `Proof::generate` produces natively. ADR-092 §6.1.
const w = await this.generateWitness(256);
const hex = Array.from(w).map((b) => b.toString(16).padStart(2, '0')).join('');
const info = this.bootInfo ?? (await this.boot());
const manifest = JSON.stringify(
{
kind: 'nvsim-proof-bundle',
version: info.buildVersion,
seed: '0x0000002A',
nSamples: 256,
witness: hex,
expected: info.expectedWitnessHex,
ok: hex === info.expectedWitnessHex,
ts: new Date().toISOString(),
},
null,
2,
);
return new Blob([manifest], { type: 'application/json' });
}
async buildId(): Promise<string> {
const r = await this.rpc<{ buildId: string }>({ type: 'buildId' });
return r.buildId;
}
async close(): Promise<void> {
this.worker.terminate();
}
}
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/* WebSocket transport client — talks to a `nvsim-server` Axum host
* (v2/crates/nvsim-server). REST for control plane, binary WebSocket
* for the MagFrame stream. Mirrors the WasmClient interface so the
* dashboard can swap transports at runtime without code changes.
*
* ADR-092 §5.2 / §6.2.
*/
import {
type NvsimClient,
type SceneJson,
type PipelineConfigJson,
type RunOpts,
type MagFrameBatch,
type NvsimEvent,
type TransientRunResult,
parseFrameBatch,
} from './NvsimClient';
interface HealthBody {
nvsim_version: string;
magic: number;
frame_bytes: number;
expected_witness_hex: string;
}
interface VerifyBody {
ok: boolean;
actual_hex: string;
expected_hex: string;
}
interface WitnessBody {
witness_hex: string;
samples: number;
seed_hex: string;
}
export interface WsBootInfo {
buildVersion: string;
frameMagic: number;
frameBytes: number;
expectedWitnessHex: string;
}
/** Convert a base URL (e.g. `http://host:7878`) to its WebSocket peer (`ws://host:7878`). */
function toWsUrl(baseUrl: string): string {
if (baseUrl.startsWith('ws://') || baseUrl.startsWith('wss://')) return baseUrl;
return baseUrl.replace(/^http/, 'ws');
}
export class WsClient implements NvsimClient {
private baseUrl: string;
private wsUrl: string;
private ws: WebSocket | null = null;
private bootInfo: WsBootInfo | null = null;
private frameSubs = new Set<(b: MagFrameBatch) => void>();
private eventSubs = new Set<(e: NvsimEvent) => void>();
private running = false;
private framesEmitted = 0;
private fpsLast = performance.now();
private fpsCount = 0;
/** @param baseUrl e.g. `http://localhost:7878` */
constructor(baseUrl: string) {
this.baseUrl = baseUrl.replace(/\/$/, '');
this.wsUrl = `${toWsUrl(this.baseUrl)}/ws/stream`;
}
private async json<T>(path: string, init?: RequestInit): Promise<T> {
const res = await fetch(`${this.baseUrl}${path}`, {
...init,
headers: { 'content-type': 'application/json', ...(init?.headers ?? {}) },
});
if (!res.ok) throw new Error(`${path}: ${res.status} ${res.statusText}`);
return (await res.json()) as T;
}
async boot(): Promise<WsBootInfo> {
if (this.bootInfo) return this.bootInfo;
const h = await this.json<HealthBody>('/api/health');
this.bootInfo = {
buildVersion: h.nvsim_version,
frameMagic: h.magic,
frameBytes: h.frame_bytes,
expectedWitnessHex: h.expected_witness_hex,
};
this.openWs();
return this.bootInfo;
}
private openWs(): void {
if (this.ws) return;
const ws = new WebSocket(this.wsUrl);
ws.binaryType = 'arraybuffer';
ws.onopen = () => {
this.eventSubs.forEach((s) =>
s({ type: 'log', level: 'ok', msg: `ws/stream connected · ${this.wsUrl}` }),
);
};
ws.onclose = () => {
this.ws = null;
this.eventSubs.forEach((s) =>
s({ type: 'log', level: 'warn', msg: 'ws/stream closed' }),
);
};
ws.onerror = () => {
this.eventSubs.forEach((s) =>
s({ type: 'log', level: 'err', msg: `ws/stream error · ${this.wsUrl}` }),
);
};
ws.onmessage = (ev: MessageEvent) => {
if (!(ev.data instanceof ArrayBuffer)) return;
const bytes = new Uint8Array(ev.data);
const frames = parseFrameBatch(bytes);
if (frames.length === 0) return;
const batch: MagFrameBatch = { frames, bytes };
this.frameSubs.forEach((s) => s(batch));
this.framesEmitted += frames.length;
this.fpsCount += frames.length;
const now = performance.now();
if (now - this.fpsLast >= 1000) {
const fps = (this.fpsCount * 1000) / (now - this.fpsLast);
this.eventSubs.forEach((s) => s({ type: 'fps', value: fps }));
this.fpsLast = now;
this.fpsCount = 0;
}
};
this.ws = ws;
}
async loadScene(scene: SceneJson): Promise<void> {
await this.json('/api/scene', { method: 'PUT', body: JSON.stringify(scene) });
}
async setConfig(cfg: PipelineConfigJson): Promise<void> {
await this.json('/api/config', { method: 'PUT', body: JSON.stringify(cfg) });
}
async setSeed(seed: bigint): Promise<void> {
await this.json('/api/seed', {
method: 'PUT',
body: JSON.stringify({ seed_hex: '0x' + seed.toString(16).toUpperCase().padStart(16, '0') }),
});
}
async reset(): Promise<void> {
await this.json('/api/reset', { method: 'POST' });
this.running = false;
this.framesEmitted = 0;
this.eventSubs.forEach((s) => s({ type: 'state', running: false, t: 0, framesEmitted: 0 }));
}
async run(_opts?: RunOpts): Promise<void> {
await this.json('/api/run', { method: 'POST' });
this.running = true;
this.eventSubs.forEach((s) =>
s({ type: 'state', running: true, t: 0, framesEmitted: this.framesEmitted }),
);
}
async pause(): Promise<void> {
await this.json('/api/pause', { method: 'POST' });
this.running = false;
this.eventSubs.forEach((s) =>
s({ type: 'state', running: false, t: 0, framesEmitted: this.framesEmitted }),
);
}
async step(direction: 'fwd' | 'back', dtMs: number): Promise<void> {
await this.json('/api/step', { method: 'POST', body: JSON.stringify({ direction, dt_ms: dtMs }) });
}
onFrames(cb: (b: MagFrameBatch) => void): void { this.frameSubs.add(cb); }
onEvent(cb: (e: NvsimEvent) => void): void { this.eventSubs.add(cb); }
async generateWitness(samples: number): Promise<Uint8Array> {
const r = await this.json<WitnessBody>('/api/witness/generate', {
method: 'POST',
body: JSON.stringify({ samples }),
});
const out = new Uint8Array(32);
for (let i = 0; i < 32; i++) out[i] = parseInt(r.witness_hex.slice(i * 2, i * 2 + 2), 16);
return out;
}
async verifyWitness(expected: Uint8Array): Promise<{ ok: true } | { ok: false; actual: Uint8Array }> {
const expected_hex = Array.from(expected).map((b) => b.toString(16).padStart(2, '0')).join('');
const r = await this.json<VerifyBody>('/api/witness/verify', {
method: 'POST',
body: JSON.stringify({ expected_hex, samples: 256 }),
});
if (r.ok) return { ok: true };
const actual = new Uint8Array(32);
for (let i = 0; i < 32; i++) actual[i] = parseInt(r.actual_hex.slice(i * 2, i * 2 + 2), 16);
return { ok: false, actual };
}
async exportProofBundle(): Promise<Blob> {
const text = await fetch(`${this.baseUrl}/api/export-proof`, { method: 'POST' }).then((r) => r.text());
return new Blob([text], { type: 'application/json' });
}
async runTransient(
scene: SceneJson,
config: PipelineConfigJson,
_seed: bigint,
samples: number,
): Promise<TransientRunResult> {
// Server doesn't expose a transient route in V1 — the dashboard's
// Ghost Murmur sandbox falls back to the WASM client when transport
// is WS. Stub here returns a zero-result so the caller can detect.
void scene; void config; void samples;
return {
bRecoveredT: [0, 0, 0],
bMagT: 0,
noiseFloorPtSqrtHz: 0,
sigmaPt: [0, 0, 0],
nFrames: 0,
witnessHex: '(transient route not available in WS transport — V1 limitation)',
};
}
async buildId(): Promise<string> {
const info = this.bootInfo ?? (await this.boot());
return `nvsim@${info.buildVersion} (ws)`;
}
async close(): Promise<void> {
this.ws?.close();
this.ws = null;
}
}
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/* Web Worker hosting the nvsim WASM module.
*
* Boots `/nvsim-pkg/nvsim.js`, instantiates `WasmPipeline`, then
* postMessage-RPCs with the main thread. Frame batches are returned
* as `ArrayBuffer` transfers so we don't pay a copy on the hot path.
*
* ADR-092 §5.4.
*/
/// <reference lib="WebWorker" />
const ws = self as unknown as DedicatedWorkerGlobalScope;
interface WasmPipelineApi {
run(n: number): Uint8Array;
runWithWitness(n: number): { frames: Uint8Array; witness: Uint8Array; frameCount: number };
free?: () => void;
}
type WasmPipelineCtor = new (sceneJson: string, configJson: string, seed: number) => WasmPipelineApi;
type WasmPipelineStatic = WasmPipelineCtor & {
buildVersion(): string;
frameMagic(): number;
frameBytes(): number;
};
interface TransientResult {
bRecoveredT: Float64Array;
bMagT: number;
noiseFloorPtSqrtHz: number;
sigmaPt: Float64Array;
nFrames: number;
witnessHex: string;
}
interface NvsimPkg {
default: (input?: unknown) => Promise<unknown>;
WasmPipeline: WasmPipelineStatic;
referenceSceneJson: () => string;
expectedReferenceWitnessHex: () => string;
hexWitness: (b: Uint8Array) => string;
referenceWitness: () => Uint8Array;
runTransient: (sceneJson: string, configJson: string, seed: number, nSamples: number) => TransientResult;
}
let _WasmPipeline!: WasmPipelineStatic;
let referenceSceneJson!: () => string;
let expectedReferenceWitnessHex!: () => string;
let hexWitness!: (b: Uint8Array) => string;
let referenceWitness!: () => Uint8Array;
let runTransient!: (sceneJson: string, configJson: string, seed: number, nSamples: number) => TransientResult;
async function loadPkg(base: string): Promise<void> {
// `base` is the dashboard's BASE_URL injected by Vite, prefixed with the
// origin so we get an absolute URL the dynamic import can resolve. In dev
// this is "/", in prod under GitHub Pages it's "/RuView/nvsim/".
const absoluteBase = new URL(base, ws.location.origin).href;
const pkgUrl = new URL('nvsim-pkg/nvsim.js', absoluteBase).href;
const pkg = (await import(/* @vite-ignore */ pkgUrl)) as NvsimPkg;
await pkg.default();
_WasmPipeline = pkg.WasmPipeline;
referenceSceneJson = pkg.referenceSceneJson;
expectedReferenceWitnessHex = pkg.expectedReferenceWitnessHex;
hexWitness = pkg.hexWitness;
referenceWitness = pkg.referenceWitness;
runTransient = pkg.runTransient;
}
let pipeline: WasmPipelineApi | null = null;
let configJson = '';
let sceneJson = '';
let seed = BigInt(0xCAFEBABE);
let running = false;
let timer: number | null = null;
let framesEmitted = 0;
let tStart = 0;
function ensureRebuild(): void {
if (!sceneJson) sceneJson = referenceSceneJson();
if (!configJson) {
configJson = JSON.stringify({
digitiser: { f_s_hz: 10000, f_mod_hz: 1000 },
sensor: {
gamma_fwhm_hz: 1.0e6,
t1_s: 5.0e-3,
t2_s: 1.0e-6,
t2_star_s: 200e-9,
contrast: 0.03,
n_spins: 1.0e12,
shot_noise_disabled: false,
},
dt_s: null,
});
}
pipeline?.free?.();
pipeline = new _WasmPipeline(sceneJson, configJson, Number(seed & 0xFFFFFFFFn));
}
function post(msg: unknown, transfer: Transferable[] = []): void {
// postMessage Transferable overload: pass transfer list as 2nd arg
(ws.postMessage as (msg: unknown, t: Transferable[]) => void)(msg, transfer);
}
function startTimer(): void {
if (timer !== null) return;
tStart = performance.now();
framesEmitted = 0;
const tick = (): void => {
if (!running || !pipeline) return;
// Per-tick: simulate 32 frames; push as one batch.
const n = 32;
const bytes = pipeline.run(n);
framesEmitted += n;
const elapsed = (performance.now() - tStart) / 1000;
const fps = elapsed > 0 ? framesEmitted / elapsed : 0;
post(
{ type: 'frames', batch: bytes.buffer, count: n, fps, framesEmitted },
[bytes.buffer],
);
timer = ws.setTimeout(tick, 16);
};
timer = ws.setTimeout(tick, 0);
}
function stopTimer(): void {
if (timer !== null) {
ws.clearTimeout(timer);
timer = null;
}
}
ws.addEventListener('message', async (ev: MessageEvent): Promise<void> => {
const m = ev.data as { type: string; id?: number; [k: string]: unknown };
try {
switch (m.type) {
case 'boot': {
const base = (m.base as string | undefined) ?? '/';
await loadPkg(base);
ensureRebuild();
post({
type: 'booted',
id: m.id,
buildVersion: _WasmPipeline.buildVersion(),
frameMagic: _WasmPipeline.frameMagic(),
frameBytes: _WasmPipeline.frameBytes(),
expectedWitnessHex: expectedReferenceWitnessHex(),
});
break;
}
case 'setScene': {
sceneJson = m.json as string;
ensureRebuild();
post({ type: 'ack', id: m.id });
break;
}
case 'setConfig': {
configJson = m.json as string;
ensureRebuild();
post({ type: 'ack', id: m.id });
break;
}
case 'setSeed': {
seed = BigInt(m.seed as string | number | bigint);
ensureRebuild();
post({ type: 'ack', id: m.id });
break;
}
case 'reset': {
stopTimer();
running = false;
ensureRebuild();
framesEmitted = 0;
post({ type: 'ack', id: m.id });
post({ type: 'state', running: false, framesEmitted });
break;
}
case 'run': {
if (!pipeline) ensureRebuild();
running = true;
startTimer();
post({ type: 'ack', id: m.id });
post({ type: 'state', running: true, framesEmitted });
break;
}
case 'pause': {
running = false;
stopTimer();
post({ type: 'ack', id: m.id });
post({ type: 'state', running: false, framesEmitted });
break;
}
case 'step': {
if (!pipeline) ensureRebuild();
const bytes = pipeline!.run(1);
framesEmitted += 1;
post(
{ type: 'frames', batch: bytes.buffer, count: 1, fps: 0, framesEmitted },
[bytes.buffer],
);
post({ type: 'ack', id: m.id });
break;
}
case 'witnessGenerate': {
if (!pipeline) ensureRebuild();
const samples = (m.samples as number) ?? 256;
const result = pipeline!.runWithWitness(samples) as {
frames: Uint8Array;
witness: Uint8Array;
frameCount: number;
};
const hex = hexWitness(result.witness);
post(
{
type: 'witness',
id: m.id,
witness: result.witness.buffer,
hex,
frameCount: result.frameCount,
},
[result.witness.buffer],
);
break;
}
case 'witnessVerify': {
// Verify always runs the *canonical* reference scene at seed=42, N=256
// so the witness matches Proof::EXPECTED_WITNESS_HEX byte-for-byte.
// The user's working scene/config/seed don't affect the witness.
const expectedBuf = m.expected as ArrayBuffer;
const expected = new Uint8Array(expectedBuf);
const actual = referenceWitness();
let ok = actual.length === expected.length;
if (ok) {
for (let i = 0; i < expected.length; i++) {
if (actual[i] !== expected[i]) { ok = false; break; }
}
}
const actualBuf = actual.slice().buffer;
post(
{
type: 'verify',
id: m.id,
ok,
actual: actualBuf,
actualHex: hexWitness(actual),
},
[actualBuf],
);
break;
}
case 'runTransient': {
const sceneJson = m.scene as string;
const configJson = m.config as string;
const seed = (m.seed as number) ?? 0;
const samples = (m.samples as number) ?? 64;
const r = runTransient(sceneJson, configJson, seed, samples);
post({
type: 'transient',
id: m.id,
bRecoveredT: Array.from(r.bRecoveredT),
bMagT: r.bMagT,
noiseFloorPtSqrtHz: r.noiseFloorPtSqrtHz,
sigmaPt: Array.from(r.sigmaPt),
nFrames: r.nFrames,
witnessHex: r.witnessHex,
});
break;
}
case 'buildId': {
post({
type: 'buildId',
id: m.id,
buildId: `nvsim@${_WasmPipeline.buildVersion()}`,
});
break;
}
default:
post({ type: 'err', id: m.id, msg: `unknown op ${m.type}` });
}
} catch (e) {
post({ type: 'err', id: m.id, msg: (e as Error).message ?? String(e) });
}
});
post({ type: 'ready' });