An interrupted turn left `finalize_turn` with a diagnostic `final_response`
("Operation interrupted: waiting for model response") and no failure, so the
result said `completed=True` — the only producer that did; `turn_recovery`
and `codex_runtime` already return `completed=False` for an interrupt and the
gateway stream gate documents that contract. `completed` now also requires
`not interrupted`.
The API server then hard-coded the terminal status: the session chat stream
emitted `assistant.completed {completed: true, interrupted: false}` and
`run.completed` for every turn that did not raise, and `/v1/runs` booked any
non-`failed` result as `completed` — including an interrupt that did not come
through `/stop` and a turn that ran out of iteration budget. Automation that
reads the run status or the terminal event saw unfinished work as delivered,
and `partial: true` could sit next to `completed: true` in one payload.
`api_server_runs.terminal_run_status()` is now the single mapping for both
surfaces: interrupted -> `cancelled`, failed/partial/`completed=False` ->
`failed` (with `turn_exit_reason` and the fallback text as `output`),
otherwise `completed`; the terminal event is always `run.<status>` and a
late `pending_steer` rides on every terminal status instead of only on
`completed`.
CLI exit codes (`-q` quiet mode, `-z` one-shot) are deliberately unchanged
here: `hermes -z` returning 0 whenever text was produced was a stated design
choice (093f567f0d) and scripts depend on it, so that flip needs a
maintainer decision.
Fixes the gateway/producer half of #111770; slimmer redo of #111785 by
@KoNit-K (same mapping idea, one helper instead of three ladders).
Co-authored-by: KoNit-K <124019182+KoNit-K@users.noreply.github.com>
0a6c7b7fa3