Count & Chance reproducibility kit

Publication revision: ertaiba-20260828T033904Z
Calculation tests: 17

Files
- statistics.mjs: the pure calculation and deterministic simulation layer
- statistics.test.mjs: fixed examples, invariants, edge conditions, and seed replay checks
- package.json: the exact runtime dependency needed by the calculation layer
- manifest.json: file sizes and SHA-256 checksums

Run locally
1. Install Node.js 22.12 or newer.
2. Put all downloaded files in one directory.
3. Run: npm install --ignore-scripts
4. Run: npm test

Scope
This snapshot lets a reader inspect and rerun the calculations behind the published experiments. It is not an independent audit, a security review, or a claim that a synthetic teaching model represents a real population. Public access does not grant a reuse license beyond applicable law.