3 Commits
Author SHA1 Message Date
ducoterra 90d98dcc9e Keep the sandbox's own chatter off the stream the command owns
stdout inside the container belongs to the command that ran. Two readers take it as
data: ai-sandbox-autophase's preflight reads its answer from that stream, and
progress.mjs reads the child pi's JSON event stream from it. Five notices in the
pi-seeding block went there instead of stderr, and the steady state (host file
unchanged, so cur = prev) prints one on *every* pi-bridged run -- the driver refused a
working sandbox on every project. They all go to stderr now, like log() and fail().

The preflight takes the aisb-ok marker from wherever it appears instead of insisting it
come first: a banner from an older image or from the user's own launcher is warned about
and quoted back, because that stream is parsed as data in every unit. It still refuses on
a non-zero exit, on silence, and on a launcher that runs no command -- the failures that
would repeat in every unit -- and quotes the foreign stdout instead of a bare exit code.

The same block, second contract: the thinking level is policy, so a home the sandbox
creates gets it on the *first* seed, not one run later via the merge.

tests/unit/06_entrypoint.sh runs the seeding block with the two streams split and asserts
stdout empty in every state (cold, steady, edited inside, unparseable, level changed), and
greps the entrypoint for any [aisb] line without >&2. tests/unit/10_autophase.sh adds the
noisy and the yapping launcher fixtures.

LLM-Generated: true
2026-10-30 22:53:57 -04:00
ducoterra a91744f390 stop the driver hanging on a terminal and on a launcher
ai-sandbox-autophase could sit forever, printing nothing, in two places
that are both before the first unit -- which is why both looked like a
script that "does nothing".

The rc probe ran `timeout 15 bash -ic` in front of the user's terminal.
An interactive bash calls tcsetpgrp() to take that terminal, is in its
background, and is stopped for trying; a stopped process does not take
SIGTERM, so the timeout waited in front of it and the driver waited on
the command substitution behind it. It now runs in its own session
(setsid), with stdin closed, under `timeout -k`, and reads the
definition from a temp file rather than a pipe, because a grandchild an
rc file leaves behind holds a pipe's EOF open long after the shell it
came from has been reaped.

A launcher is called *with* the run, and a function ending at
`--env NAME` -- the shape everyone writes for typing by hand, including
every example this repo printed -- discards the flags and the
in-container command. The container then starts the image's default
harness with no prompt and, with --no-interactive gone, the terminal
attached: an agent waiting for keystrokes behind a pipe nobody reads.
`ap_forwards_args` checks the captured definition, --status and the
preflight name it with the one-line fix, and every child now starts with
stdin on /dev/null so a launcher cannot put the sandbox back on the
keyboard. Aliases and whole command lines need no forwarding: the shell
appends the words to those.

Tests: a launcher fixture that drops its arguments, one that leaves a
process behind, and shape assertions on ap_probe_rc.

LLM-Generated: true
2026-10-29 21:07:39 -04:00
ducoterra b273bfef09 name the sandbox's working directory, and drive phases through it
Two features, one shared reason: what the sandbox calls things decides
what a run tells you afterwards.

The cwd is now mounted at the path it has on the host and that is the
working directory, so pwd, an error the agent quotes, a commit message and
the window title a harness derives from the cwd all name this project
instead of reading the same as every sandbox in the session. The mount is
unchanged: same directory, same rw, same :z, still the only writable one.

Only the destination changed, and a destination is where a bind mount can
do damage -- it hides whatever the image already had there. So
mirror_block_of() refuses the paths the image or the sandbox owns (/usr,
/etc, /var, /opt, /bin, /sbin, /lib*, /boot, /proc, /sys, /dev, /root,
/run, /tmp, /home, /home/sandbox*) and / itself, while /home/<user>/...
mirrors: the one standard hierarchy where work lives, and the one whose
per-user tree never meets the container's /home/sandbox volume or the
read-only .agents share inside it.

/tmp is what set the shape, and it was measured rather than assumed: with
--tmpfs /tmp and -v /tmp/x:/tmp/x in one run podman puts the tmpfs on top,
so pwd prints the right path, writes succeed, and the project is not there.
A failure that quiet earns a refusal plus a line of output instead:
workdir_note in --print-policy, a comment in --dry-run, one log line on a
real run. --workdir DIR still chooses the mount point; onto a refused path
it is honoured (it was asked for) and warned about. /project, the one
directory baked into the image, is every fallback, so a workdir always
exists -- --no-cwd included.

ai-sandbox-autophase runs a .agents/phases/ pipeline with the split the
sandbox forces: every executor agent and the .agents/validate.sh gate
inside, the commits and the pushes outside. The gate is in the writable
mount, so running it on the host is running agent-editable bash on the
host; the git remote is deliberately unreachable in there, because an agent
that can push can ship what you are about to review. It runs your launcher,
not a copy of it -- the definition is read out of your rc files and never
called, which is what lets --status and --dry-run promise no token fetch,
no build, no container. Host git runs with an empty hooks path and no ext::
transport, and delivery is refused if a sandboxed unit rewrote .git/config
or planted a hook. Needs --no-interactive to go with --no-tty: an
unattended run must not leave stdin open on your keyboard, and the two are
now separate choices on both sides.

Tests and tooling, most of it forced by what the two changes exposed:
mirror_block_of is extracted from the script and asked about /usr and
/home/sandbox, which a test cannot create (the 06_entrypoint.sh pattern),
and both real branches are driven from a scratch dir under $HOME, since
$TMPDIR is always the fallback -- which is why the whole suite had only
ever seen /project. e2e/12 holds a real container to the same promise,
including that /project, /home/sandbox and a home-volume marker survive a
mirrored run. The "nothing was started" checks now compare the set of
container ids before and after instead of counting every sandbox on the
machine, so a session you have open is not a test failure; the pty cases
fall back to python3 where util-linux's script is not installed.
shellcheck covers both programs, the completion file and the fixtures, so
the completion builds are word-by-word now, and a colon in the project path
is refused with the reason instead of podman's "invalid option type".

558 unit assertions, 719 with e2e; lint and bash -n clean.

LLM-Generated: true
2026-10-28 10:06:31 -04:00