The parent commit only stamped a tool_reason on the watchdog producers, so a
reason-less hard_cancel still minted "explicit stop requested" (a USER reason)
for gateway stop/restart, session eviction while a turn runs, abandoned SSE
runs and TUI/desk shutdown - the exact confusion class of #112647, failing open
toward "user". Pass a system tool_reason at those producers (run_shutdown,
run_agent_cache via the eviction caller only - /stop and /new stay user-owned -
and api_server) so only genuine surface stops book interrupted_by_user.
InterruptScope.cancel now takes tool_reason so the Hermes Console user-cancel
branch is attributed to the user; the console timeout keeps the host slug.
Also repairs the red CI: the cross-process lease tests stub agent.interrupt
with (message, hard_cancel) only, so the new tool_reason kwarg raised TypeError
inside the lease's fallback and the stub never fired. Widen the doubles, and
update the two shutdown mocks that asserted the exact interrupt() call.
Hermes Console ran each command on a ThreadPoolExecutor and cancelled only
the asyncio waiter. A command that forks an AIAgent (`curator run
--consolidate`) kept its worker thread and its in-flight provider request
alive after the prompt said "cancelled" — a llama.cpp generation kept
decoding for 30+ minutes and held the inference slot (#106179).
Root cause: the host owning the thread never knew about the agent created
deep inside the synchronous command, so it could not call the existing
cooperative `interrupt()` path that closes the request sockets.
Fix: `agent/interrupt_scope.py` gives the host an `InterruptScope`; the
console binds it around the worker (ContextVar), and every
`AIAgent.run_conversation()` registers itself with the bound scope for the
turn. On cancel, timeout and disconnect the console calls `scope.cancel()`
(hard-interrupts every registered agent; an agent registering after the
cancel is interrupted on entry so the cancel cannot lose the race with a
turn that has not started) and awaits the worker Future with a 10s bound
before reporting cancelled/timeout. Queued-but-unstarted work is dropped via
`Future.cancel()` alone.
Live repro (fake OpenAI-compatible provider blocking like llama.cpp, real
/api/console, real curator dispatch, real AIAgent + direct request path):
origin/main at the "cancelled" frame -> request_exited=false,
worker_exited=false; with this change -> both true, provider saw the peer
close, prompt reported cancelled 0.27s after the frame.
Salvage of #106197 by @kyssta-exe (executor-future handle, cancel/timeout/
disconnect propagation) and #106320 by @Xixiartemis (deterministic
lifecycle regression: terminal(cancelled) => no owned request or worker
remains live; interrupt-on-late-registration). Both rebuilt slimmer: #106197 keyed its fallback on Future.cancel()
returning False, but the handle it held was run_in_executor's asyncio
wrapper, whose cancel() returns True while the thread keeps running, so its
thread-name abort registry was never consulted; #106320's command-scoped
ownership model is folded into one small module hooked at the turn facade
instead of a per-caller `bind_agent`.
Co-authored-by: kyssta-exe <218078013+kyssta-exe@users.noreply.github.com>
Co-authored-by: Xixiartemis <182932319+Xixiartemis@users.noreply.github.com>
