new POST /api/cancel on the per-agent web UI: shells out
pkill -INT claude (procps added to harness-base.nix). emits a Note
on the bus so the operator sees the cancel landed; state goes back
to idle when run_claude wakes and emits TurnEnd as usual.
frontend:
- /cancel slash command in the terminal input
- ■ cancel turn button in the state row, visible only while
state === 'thinking' (driven from the same SSE-based state
machine). disabled briefly during the POST.
claude gets SIGINT (not TERM) so it flushes anything in-flight and
emits a final result row before exiting.
- harness-base.nix: switch to programs.git for declarative gitconfig.
- agent + manager service path = /run/current-system/sw → agents pick up
new packages from their own agent.nix without harness edits.
- generated applied/<name>/flake.nix overrides programs.git.config.user
(no more raw etc.gitconfig collision).
