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fix: default cross-model workflows to frontier models

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Garry Tan
2026-09-09 02:48:34 +00:00
parent 0530392821
commit 939da0c203
69 changed files with 603 additions and 255 deletions
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bin/gstack-codex-probe
+19 -17
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@@ -4,7 +4,7 @@
#
# Functions (all prefixed with _gstack_codex_ for namespace hygiene):
# _gstack_codex_auth_probe — multi-signal auth check (env + file)
# _gstack_codex_model_probe — round-trip probe of the configured model (#2477)
# _gstack_codex_model_probe — round-trip probe of gstack's selected model (#2477)
# _gstack_codex_version_check — warn on known-bad Codex CLI versions
# _gstack_codex_timeout_wrapper — gtimeout -> timeout -> unwrapped fallback
# _gstack_codex_log_event — telemetry emission to ~/.gstack/analytics/
@@ -38,17 +38,16 @@ _gstack_codex_auth_probe() {
_gstack_codex_model_probe() {
# Auth-exists is a weaker signal than the auth probe implies: a ChatGPT
# account with a stale `model = "..."` pin in ~/.codex/config.toml passes
# the auth probe, then EVERY invocation dies with an HTTP 400 ("The
# '<model>' model is not supported when using Codex with a ChatGPT
# account") and no guidance. A short real round trip with the configured
# model catches model rejection, entitlement changes, and stale pins in
# one shot (#2477).
# account can be valid while the model gstack will request is unavailable.
# A short real round trip with gstack's selected model catches model
# rejection and entitlement changes in one shot (#2477). gstack pins a
# frontier default rather than inheriting Codex CLI's built-in default,
# because that default can lag the most capable available model.
#
# Contract:
# MODEL_OK (exit 0) — round trip succeeded; cached 1h.
# MODEL_UNUSABLE (exit 1) — deterministic model 400; hints printed.
# Cached 15 min: the 400 is config-driven, so re-probing every preflight
# Cached 15 min: the 400 is model/entitlement-driven, so re-probing every preflight
# charged the affected user a 30s round trip + real tokens per review
# section, forever. Editing config.toml (the fix) changes the cache
# signature and re-probes immediately; the short TTL covers server-side
@@ -66,19 +65,22 @@ _gstack_codex_model_probe() {
local _codex_home="${CODEX_HOME:-$HOME/.codex}"
local _gstack_home="${GSTACK_HOME:-$HOME/.gstack}"
local _cache="$_gstack_home/.codex-model-probe"
# Cache signature: config.toml + auth.json mtimes. Editing the model pin
# or re-logging-in invalidates the cached MODEL_OK immediately.
local _model="${GSTACK_CODEX_MODEL:-gpt-6-astra}"
# Cache signature: config.toml + auth.json mtimes + gstack model selection.
# Editing the model env/config or re-logging-in invalidates the cached result
# immediately.
# GNU-first stat order + numeric validation (the #2195 pattern): on GNU
# stat, `-f` means FILESYSTEM mode, so the BSD-first form emitted a
# multi-line filesystem block on Linux — the signature then never matched
# its own cache line and the cache missed on every read. BSD stat rejects
# `-c` cleanly, so GNU-first degrades correctly on macOS.
local _cfg_m _auth_m _sig
local _cfg_m _auth_m _model_sig _sig
_cfg_m=$(stat -c %Y "$_codex_home/config.toml" 2>/dev/null || stat -f %m "$_codex_home/config.toml" 2>/dev/null || echo 0)
_auth_m=$(stat -c %Y "$_codex_home/auth.json" 2>/dev/null || stat -f %m "$_codex_home/auth.json" 2>/dev/null || echo 0)
case "$_cfg_m" in ''|*[!0-9]*) _cfg_m=0 ;; esac
case "$_auth_m" in ''|*[!0-9]*) _auth_m=0 ;; esac
_sig="${_cfg_m}-${_auth_m}"
_model_sig=$(printf '%s' "$_model" | sed 's/[^A-Za-z0-9._:-]/_/g')
_sig="${_cfg_m}-${_auth_m}-${_model_sig}"
local _now
_now=$(date +%s 2>/dev/null || echo 0)
if [ -f "$_cache" ]; then
@@ -94,13 +96,13 @@ _gstack_codex_model_probe() {
fi
if [ "$_c_status" = "MODEL_UNUSABLE" ] && [ "$_c_sig" = "$_sig" ] && [ $((_now - _c_ts)) -lt 900 ]; then
echo "MODEL_UNUSABLE (cached)"
echo "HINT: the rejected model comes from the 'model = ' line in $_codex_home/config.toml."
echo "HINT: check its [notice.model_migrations] table — Codex records the intended replacement there."
echo "HINT: gstack requested model '$_model'."
echo "HINT: set GSTACK_CODEX_MODEL=<supported-model> or pass an explicit -c model=... override."
return 1
fi
fi
local _out _code
_out=$(_gstack_codex_timeout_wrapper 30 codex exec --skip-git-repo-check -s read-only "reply OK" </dev/null 2>&1)
_out=$(_gstack_codex_timeout_wrapper 30 codex exec --skip-git-repo-check -s read-only -c "model=\"$_model\"" "reply OK" </dev/null 2>&1)
_code=$?
if [ "$_code" -eq 0 ]; then
mkdir -p "$_gstack_home" 2>/dev/null || true
@@ -113,8 +115,8 @@ _gstack_codex_model_probe() {
printf 'MODEL_UNUSABLE %s %s\n' "$_now" "$_sig" > "$_cache" 2>/dev/null || true
echo "MODEL_UNUSABLE"
printf '%s\n' "$_out" | grep -i "model" | head -3
echo "HINT: the rejected model comes from the 'model = ' line in $_codex_home/config.toml."
echo "HINT: check its [notice.model_migrations] table — Codex records the intended replacement there."
echo "HINT: gstack requested model '$_model'."
echo "HINT: set GSTACK_CODEX_MODEL=<supported-model> or pass an explicit -c model=... override."
_gstack_codex_log_event "codex_model_unusable" 2>/dev/null || true
return 1
fi