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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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Cargo.lock generated
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@ -1835,9 +1835,9 @@ dependencies = [
[[package]]
name = "hive-claude"
version = "0.1.2"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e43e06fd09a7b6d6cca3e70f06d00fa795ceddfe1555121ca0cf4fc578eb9c3"
checksum = "8c87ac627823f7bfc38478d7494e614e3f680dda6007dbcd306af51d3eed3bb3"
dependencies = [
"libc",
"serde",