[filipeforattini]

Problem

HookV2 tests fail intermittently under parallel CI with an uncaught EPIPE: broken pipe, write. The handlers in those tests (like many real hooks) exit without reading stdin.

Cause

AppProcess.run passes the hook input as stdin; Effect's NodeChildProcessSpawner writes it through a sink that listens for errors only while attached. When the child exits first, the pipe closes and the pending write fails with EPIPE after the sink stopped listening, so it escapes as an uncaught error: the running test fails, and in production the error surfaces from a hook that simply ignored its input.

Fix

Patch @effect/platform-node-shared@4.0.0-beta.83 to attach a no-op error listener on the child's stdin before wiring the sink. The sink still reports errors while it is attached; only a late one is kept from escaping.

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