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gstack/bin/gstack-session-kind
Garry Tanandcapy-ai[bot] 45a678323b v1.91.70.0 feat(unattended): artifact contract + validator, unattended session kind, findings-derived review log, gate list (multi-agent wave B-core) (#3115)
* v1.91.70.0 feat(unattended): artifact contract, unattended session kind, findings-derived review log, gate list

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* test: register test/fixtures/multi-agent-wave as a free fixture (consumer: headless-artifacts.test.ts)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

---------

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
2026-10-10 23:26:08 +00:00

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#!/usr/bin/env bash
# gstack-session-kind — classify the current agent session so skills know whether
# a human can answer an interactive prompt (AskUserQuestion).
#
# Usage: gstack-session-kind → prints one of: unattended | spawned | headless | interactive
#
# Used by the preamble (generate-preamble-bash.ts) which echoes
# SESSION_KIND: <value>
# so the AskUserQuestion-failure fallback rule can branch without a shell-out at
# failure time:
# spawned → orchestrator session (OpenClaw). Auto-choose recommended option
# per the skill's SPAWNED_SESSION block. Never prose, never BLOCKED.
# headless → no human present (claude -p evals / CI). BLOCK on AUQ failure.
# interactive → a human is present. Prose-fallback on AUQ failure.
# unattended → a parent agent drives this run and reads its artifacts, not
# its prose (plan B1). Recommended options are auto-decided and
# logged; the final approval gate is written, never approved;
# no prompts, no publishing, no sync. Honored ONLY as the
# explicit GSTACK_SESSION_KIND=unattended override, which
# outranks GSTACK_HEADLESS so a parent can drive a run inside
# CI; the eval harness never sets it, so `headless` keeps its
# BLOCK semantics and no eval case changes meaning.
#
# Detection is best-effort. On ANY ambiguity it prints `interactive` — BLOCK only on
# a positive headless signal, since a stray prose message in an unmarked one-shot
# `-p` run just ends the turn (harmless), whereas wrongly BLOCKING a real human is not.
#
# GSTACK_SESSION_KIND=spawned|unattended is the explicit per-command override (step 0
# below), outranking every ambient marker. Deliberately narrow — only those two are honored:
# Claude Code subagents inherit the parent env byte-for-byte (#2733), so a
# dispatching skill marks its subagent by prefixing the gstack-skill-start
# invocation. "headless" already has GSTACK_HEADLESS; other values are reserved
# and ignored (fall through to detection).
#
# Why env vars and not TTY/entrypoint: an interactive Conductor session reports
# CLAUDE_CODE_ENTRYPOINT=sdk-ts with no TTY — identical to a headless SDK eval. The
# signals that actually discriminate are the host/orchestrator/CI env markers below.
set -euo pipefail
# 0. Explicit spawned / unattended marker — full rationale and contract in the header above.
case "${GSTACK_SESSION_KIND:-}" in
spawned|unattended)
echo "$GSTACK_SESSION_KIND"
exit 0
;;
esac
# 1. Orchestrator-spawned session (OpenClaw). Authoritative block lives in the skill;
# we only surface the classification.
if [ -n "${OPENCLAW_SESSION:-}" ]; then
echo "spawned"
exit 0
fi
# 2. Explicit headless override (set by the eval/E2E harness for determinism).
if [ -n "${GSTACK_HEADLESS:-}" ]; then
echo "headless"
exit 0
fi
# 3. Positive interactive-host signals: a human-driven host is present.
# - Conductor app sets CONDUCTOR_* workspace vars.
# - Plain interactive `claude` CLI sets CLAUDE_CODE_ENTRYPOINT=cli.
if [ -n "${CONDUCTOR_WORKSPACE_PATH:-}" ] || [ -n "${CONDUCTOR_PORT:-}" ] || [ "${CLAUDE_CODE_ENTRYPOINT:-}" = "cli" ]; then
echo "interactive"
exit 0
fi
# 4. CI / automation markers with no interactive host → headless.
if [ -n "${CI:-}" ] || [ -n "${GITHUB_ACTIONS:-}" ]; then
echo "headless"
exit 0
fi
# 5. No positive headless signal → assume a human is present (degrade-safe default).
echo "interactive"