The kind of systems we build.

// project.json — custom Nx executor
"serve": {
  "executor": "@acme/nest-dx:dev",
  "options": {
    "hmr": true,       // 20–100ms swap
    "instances": 2,    // per app
    "gateway": true    // one port
  }
}

// dev gateway server — N instances per
// app, routed by URL prefix
for (const app of apps)
  for (let i = 0; i < app.instances; i++)
    fork('dist/main.js', {
      env: { NEST_SOCK: sock(app, i) },
    });
gateway.use('/orders/*', balance('orders'));
gateway.listen(EXTERNAL_PORT);   // clients
gateway.internal(INTERNAL_PORT); // services

// local queue mirrors production:
// events fan out across instances
@EventPattern('order.created')
async onOrderCreated(@Payload() e) {
  // handled by whichever instance
  // pulls it — exactly like multi-node
}

// raw browser event → semantic signal — no input values, ever
const e = capture(event);
// {
//   kind:  'click',          // pointer · scroll · hover · form
//   role:  'primary_cta',    // what the element means
//   zone:  'pricing',        // where on the page
//   dwellMs: 4200,
//   confidence: 0.92,        // identity x semantic
// }

// encode events with a per-page codec → opaque coded events
// dictionary: { click: 4, hover: 5, scroll: 6, cta: 17 }
const coded = codec.encode(e);
// [4, 17, 9, 1]   ← compact, opaque on the wire
// the taxonomy and scoring never leave the backend.

// a continuous funnel feeds the realtime agent, in order
for await (const coded of funnel) agent.push(coded);
const intent = agent.infer();          // produced from events
if (intent.confidence < 0.4) return hold();   // do not interrupt
if (gate.allow(intent.action, { cooldown }))
  emit(intent.action);   // <250ms — local fallback if slow