NCA request cancellation teaching simulation. From extracted root: node scripts/run_simulation.mjs
Requires Node with AbortController (executed Node v22.23.1). Makes no HTTP calls or Cloudflare deployments; no paid services, credentials or persistent business writes. Creates only local output receipts. Timers imitate headers/chunks; this is NOT real network streaming. Two implementations x three client conditions x three repeats = 18 runs. Missing events are unobserved, not zero. Compatibility dates/flags are not applied by Node. Retained times are relative monotonic milliseconds. Run an authorized hosted integration test separately before production changes. Original code MIT; original fictional data CC0.
