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hive-claude 0.1.4: the idle watchdog stops claude with SIGINT

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hive-claude 0.1.4 (hive-claude #28) sends the idle watchdog's signal as
SIGINT to claude's process group instead of SIGKILL. It then waits for
claude to exit, with no SIGKILL fallback. claude stops the commands its
Bash tool started when it shuts down on SIGINT, and a SIGKILL left them
running. This is the last SIGKILL of a claude process from #4999.

hive-agent's `idle_timeout` -> `Error::IdleTimeout` -> `TurnError::ApiStall`
path is unchanged. The difference is that the error now arrives only
once claude has exited. A claude that ignores the SIGINT keeps the turn
open until it is killed by hand or the unit stops.

The Cargo.lock change is only hive-claude's version and checksum. A plain
`cargo update -p hive-claude --precise 0.1.4` also moved seven crates'
Windows-only `windows-sys` edges from 0.61.2 to 0.52.0, unrelated to this
bump. The minimal lock passes `--locked`.

The turn-loop and web-UI docs, and hive-agent's watchdog docs and stall
note, now say SIGINT instead of "killed". That includes the ACP spots
that the previous commit's `Drop` change made stale.
This commit is contained in:
atlas 2026-10-10 21:54:07 +02:00 • committed by mara
commit f3860f3497
5 changed files with 17 additions and 13 deletions
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10
docs/turn-loop/README.md
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@ -142,8 +142,8 @@ else a `TurnError`) drives the post-claude branch:
| `Err(RateLimited)` | sleep `HIVE_RATE_LIMIT_SLEEP_SECS` (default 300), requeue inflight, status back to `online` |
| `Err(AuthFailed)` | emit `needs_login_idle` sentinel, requeue inflight, park in `wait_for_login` |
| `Err(SessionNotFound)` | resume + create self-heal both missed ("shouldn't happen"); requeue inflight so the next turn creates fresh — no status park, message not dropped |
| `Err(ApiStall)` | idle watchdog killed claude after `HIVE_TURN_IDLE_SECS` (default 600) of output silence; sleep `HIVE_STALL_SLEEP_SECS` (default 60), requeue inflight, status back to `online` |
| `Err(AgentStall(note))` | the same, for an ACP agent: after `HIVE_TURN_IDLE_SECS` with no `session/update` the harness sent the agent `session/cancel`, and killed it if it ignored that; `note` says which |
| `Err(ApiStall)` | idle watchdog sent claude SIGINT after `HIVE_TURN_IDLE_SECS` (default 600) of output silence and claude exited; sleep `HIVE_STALL_SLEEP_SECS` (default 60), requeue inflight, status back to `online` |
| `Err(AgentStall(note))` | the same, for an ACP agent: after `HIVE_TURN_IDLE_SECS` with no `session/update` the harness sent the agent `session/cancel`, and SIGINT if it ignored that; `note` says which |
| `Err(Failed(err))` | route `[system] \`<qualified-label>\` claude turn failed:\n<err>` to `operator` via `send_to_operator` |
`ApiStall` catches an Anthropic API stall — a multi-retry connection storm where
@ -152,7 +152,11 @@ the stream goes silent for minutes. On `claude` the idle watchdog lives in
resets on every stdout line, so a large but still-streaming turn is never cut —
only complete output silence for the window trips it. The harness sets the
window from `HIVE_TURN_IDLE_SECS` (`0` disables) and maps the driver's
`Error::IdleTimeout` onto `TurnError::ApiStall`.
`Error::IdleTimeout` onto `TurnError::ApiStall`. The watchdog sends claude's
process group SIGINT, so claude stops the commands it started, and then
waits for claude to exit. Nothing escalates to SIGKILL: a claude that
ignores the SIGINT keeps the turn open until someone kills it or the unit
stops.
`hive-runtime` applies the same window to an ACP agent's turns. That's
also how a provider HTTP 429 ends an ACP turn when the agent retries it without