_session_alive collapsed every OSError from killpg(pgid, 0) into "the
group is gone". EPERM means the opposite — the group answered the probe
but holds a process we may not signal — so a session we could not touch
was reported as contained, and a timed-out command that left children
running said it had terminated cleanly.
Resolving PTY_KILL_ESCALATION also named signal.SIGKILL unconditionally,
which does not exist on native Windows. app.py imports this module at
start-up, so that turned a POSIX-only teardown detail into the whole app
failing to import there.
/api/shell/stream starts its PTY child under os.setsid, so the child
leads its own session and process group. The timeout, client-disconnect
and error paths all called proc.kill(), which signals only the group
leader. Creating a group and then signalling only its leader is strictly
worse than never creating one: the descendants are detached from the
server's group as well, so nothing else will ever reach them, while the
route reports "Command timed out after Ns" and exit_code -1 as if the
command were gone.
The kernel's controlling-terminal SIGHUP hid this for well-behaved
children, which is why it reads as working. Anything that ignores
SIGHUP — a nohup'ed job, a daemon, a process that means to outlive its
terminal — survives the kill indefinitely.
Signal the whole group instead, escalate to SIGKILL if it outlives the
grace period, and confirm it is actually gone. The timeout response now
says so when containment could not be established rather than claiming
a clean kill it did not get.
The Windows branch of `_create_bash_subprocess` spawned Git Bash with
neither pipes nor the env it was handed. `proc.stdout` and `proc.stderr`
came back `None`, so `_run_subprocess_streaming`'s reader returned
immediately and the Bash tool reported `"(no output)"` alongside the real
exit code — while the child inherited the server's own stdout/stderr and
wrote agent command output into the console and the launchd/Docker logs.
The `env` parameter was accepted and never used, so `PATH`, `VIRTUAL_ENV`,
`HOME`, `TMPDIR` and the configured import paths carried in
`ctx["subproc_env"]` never reached the child on Windows, even though every
POSIX path applies them.
Spawn it the way the POSIX path at `:688` already does: `stdin=DEVNULL`,
`stdout=PIPE`, `stderr=PIPE`, `env=env`.
`website/configuration-reference.md` is generated from source line numbers,
so the four added lines shift one entry; regenerated with
`scripts/generate_env_reference.py`.
- Headless consumers (task scheduler, background follow-up) now treat a
completion-gate final_response as the authoritative answer instead of
collecting deltas only. A gated replacement no longer leaves scheduled
output empty, which used to trigger an extra, ungated grace-summary
model call.
- The scheduler closes the agent stream with contextlib.aclosing, so the
approval-pause break unwinds the gate's journal and teacher-takeover
context in its own task. Chained runs no longer inherit a stale
parent_run_id, and later finalization no longer raises ContextVar
reset errors.
- On provider error, the completion gate applies the live answer's
statement filter to persisted round_texts. Diagnostics and the failure
note survive; claims rejected by the gate cannot reappear on reload.
Snapshot current maintainer-preview application changes and regression fixtures for integration into lab. Excludes local runtime data, evaluation outputs and source backups. Focused Python regression selection: 140 passed; full suite not certified.
Nothing in the UI said which build was loaded. /api/version has reported
version, build and source_commit since the harness started versioning itself
apart from the public semver, but the only way to read it was to curl the
endpoint — so "is the preview actually running the commit I just merged?" took
a terminal to answer.
Pins a footer under the settings sidebar nav showing the registered version
(plus the harness build when it differs) and the short source commit, with the
full hash on hover. It sits outside the nav's scroll container so it stays at
the bottom-left, and it is .admin-only, so syncAdminVisibility() hides it from
non-admins the same way it hides the Admin nav group.
The commit resolves at import via `git rev-parse HEAD` and is the string
"unknown" when that fails — a read-only Docker tree with no .git. The footer
treats "unknown" as absent and stays hidden when nothing is left to show,
rather than printing it. The collapsed rail and the two narrow tab-rail
layouts hide it too: neither has a bottom-left to write in.
Alexandre Teixeira