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aaronl-openai d9a403a8c0 [js_repl] Hard-stop active js_repl execs on explicit user interrupts (#13329)
## Summary
- hard-stop `js_repl` only for `TurnAbortReason::Interrupted`,
preserving the persistent REPL across replaced turns
- track the current top-level exec by turn and only reset when the
interrupted turn owns submitted work or a freshly started kernel for the
current exec attempt
- close both interrupt races: the write-window race by marking the exec
as submitted before async pipe writes begin, and the startup-window race
by tracking fresh-kernel ownership until submission
- add regression coverage for interrupted in-flight execs and the
pending-kernel-start window

## Why
Stopping a turn previously surfaced `aborted by user after Xs` even
though the underlying `js_repl` kernel could continue executing. Earlier
fixes also risked resetting the session-scoped REPL too broadly or
missing already-dispatched work. This change keeps cleanup scoped to
explicit stop semantics and makes the interrupt path line up with both
submitted execs and newly started kernels.

## Testing
- `just fmt`
- `cargo test -p codex-core`
- `just fix -p codex-core`

`cargo test -p codex-core` passes the updated `js_repl` coverage,
including the new startup-window regression test, but still has
unrelated integration failures in this environment outside `js_repl`.

---------

Co-authored-by: Codex <noreply@openai.com>
d9a403a8c0 ยท 2026-03-12 17:51:56 -07:00
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