effect-uai mid-stream-abort

Cancel an in-flight streamTurn cleanly via Stream.interruptWhen(Deferred.await(abort)). When the deferred completes, the stream interrupts, its scope closes, Effect's structured concurrency tears down the HTTP response, and the underlying fetch is aborted — the TCP connection drops.

Reach for this when the user says any of:

• "Stop button for the model"
• "Abort the current turn when a new prompt arrives"
• "Hard deadline on a single response"

The pattern

import { Deferred, Effect, Stream, pipe } from "effect"
import { loop, stop, onTurnComplete } from "@effect-uai/core/Loop"