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claude runtime: interrupting a session kills every process it started

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hive-claude 0.1.3 spawns claude as the leader of its own process group,
and its `Cancel::cancel` and idle watchdog signal that group instead of
claude's pid alone. Commands claude started (a `nix build`, a test run)
used to survive a subagent `interrupt` and keep running.

Bump hive-claude to 0.1.3. The subagent `interrupt` call site needs no
code change: `Cancel::cancel(force)` kept its signature.

The harness's `/cancel` and `/logout` did not go through hive-claude:
they ran `kill -INT <pid>` on the claude child they found in /proc. They
now SIGINT the group that child leads, through `libc::kill`. A `claude`
child that leads no group (the `claude plugin` calls) shares the
harness's group and is still signalled alone.

Tests: an interrupted subagent's grandchild dies, for both SIGINT and
`force`, and fails on hive-claude 0.1.2; a harness cancel stops a
turn's grandchild, and fails when only the pid is signalled.
This commit is contained in:
atlas 2026-10-10 13:44:10 +02:00 • committed by mara
commit 028c283ff9
8 changed files with 244 additions and 24 deletions
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2
Cargo.toml
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@ -97,7 +97,7 @@ hive-jobq-metrics = { path = "hive-jobq-metrics" }
hive-jobq-wire = { path = "hive-jobq-wire" }
hive-log = { path = "hive-log" }
hive-core-agent-sock = { path = "hive-core-agent-sock" }
hive-claude = "0.1.2"
hive-claude = "0.1.3"
hive-host-sock = { path = "hive-host-sock" }
hive-priv-sock = { path = "hive-priv-sock" }
hive-runtime = { path = "hive-runtime" }