fix: disclose role selections before Claude review execution

scripts/resolvers/constants.ts

@@ -215,7 +215,7 @@ Branch on the echoed \`CODEX_MODE\`:
 - **\`under_codex\`** — stale artifact selected its own harness. Print: "Codex outside review unavailable: harness mismatch; no outside process started. Missing coverage. Repair: setup --host codex." Skip the outside invocation and follow the workflow's native-review instructions below. Conflicting inherited harness markers are not grounds to guess another provider.
 - **\`not_authed\`** — installed but no credentials. Print: "Codex not authenticated; outside coverage unavailable. Run \`codex login\` or set \`$CODEX_API_KEY\`." ${nativeRoute}
 - **\`broken_install\`** — the CLI is on PATH but cannot execute (spawn ENOENT, non-executable binary, missing vendor payload). Print: "Codex is installed but its binary cannot run — Codex passes skipped. Reinstall: \`npm install -g @openai/codex\`." Relay the probe's HINT lines. ${nativeRoute}
-- **\`model_unusable\`** — the selected model (see \`CODEX_MODEL:\`) is invalid or unavailable to the account (HTTP 400 on every call). Relay the probe's HINT lines and the fix (\`GSTACK_CODEX_MODEL=<supported-model>\` or config.toml \`model\`); never substitute a model. ${nativeRoute} The ~10s round trip is cached for 1h.
+- **\`model_unusable\`** — ${opts.role ? 'the role invocation rejected policy, auth or model selection. Relay its reason and source-specific Repair/HINT lines, not a lower-priority setting. `AUTH_FAILED` needs `codex login`; never substitute a model.' : "the selected model (see `CODEX_MODEL:`) is invalid or unavailable to the account (HTTP 400 on every call). Relay the probe's HINT lines and the fix (`GSTACK_CODEX_MODEL=<supported-model>` or config.toml `model`); never substitute a model."} ${nativeRoute}${opts.role ? '' : ' The ~10s round trip is cached for 1h.'}
 - **\`quota_exhausted\`** — Codex usage limit: relay the probe's lines verbatim (reset time, retry); no more Codex calls this run. ${nativeRoute}
 - **\`sandbox_unavailable\`** — Codex's sandbox cannot start here (containers without user namespaces); the probe printed the reason and fix. No paid call ran; outside coverage is unavailable. ${nativeRoute}
 - **\`ready\`** or **\`unverified\`** — run the Codex pass below. \`unverified\` means the model check timed out or, with \`(rate_limited)\`, hit a 429; say so, and let the pass's own verdict decide.${opts.role ? `

scripts/resolvers/outside-voice.ts

@@ -124,12 +124,11 @@ _OUTSIDE_EXIT=0
 "$_CODEX_PROBE" run-with-timeout ${Math.ceil(opts.timeoutMs / 1000)} ${codex} >"$_OUTSIDE_TMP/${opts.structuredBase ? 'text' : 'events'}" 2>"$_OUTSIDE_TMP/stderr" || _OUTSIDE_EXIT=$?
 ${opts.structuredBase ? 'cat "$_OUTSIDE_TMP/text"' : 'cat "$_OUTSIDE_TMP/text" 2>/dev/null || tail -n 20 "$_OUTSIDE_TMP/events"'}`
     : `_OUTSIDE_EXIT=0
-"${bin}/gstack-claude-code" --cwd "$_REPO_ROOT" --access ${opts.access ?? 'none'} --timeout-ms ${opts.timeoutMs}${opts.role ? ` --role ${opts.role}` : ''} <"$_OUTSIDE_INPUT" >"$_OUTSIDE_TMP/result.json" 2>"$_OUTSIDE_TMP/stderr" || _OUTSIDE_EXIT=$?
+: >"$_OUTSIDE_TMP/stderr" || exit 1
+"${bin}/gstack-claude-code" --cwd "$_REPO_ROOT" --access ${opts.access ?? 'none'} --timeout-ms ${opts.timeoutMs}${opts.role ? ` --role ${opts.role}` : ''} <"$_OUTSIDE_INPUT" >"$_OUTSIDE_TMP/result.json" || _OUTSIDE_EXIT=$?
 # Preserve session/usage/modelUsage from this JSON; multiple models have no invented primary.
 cat "$_OUTSIDE_TMP/result.json" || { [ "$_OUTSIDE_EXIT" -ne 0 ] || _OUTSIDE_EXIT=1; }
-if [ "$_OUTSIDE_EXIT" -eq 0 ]; then
-  bun -e 'const r=await Bun.file(process.argv[1]).json(); if(r.status!=="completed" || typeof r.result!=="string" || !r.result.trim()) process.exit(1); await Bun.write(process.argv[2],r.result)' "$_OUTSIDE_TMP/result.json" "$_OUTSIDE_TMP/text" || _OUTSIDE_EXIT=1
-fi`;
+bun -e 'const r=await Bun.file(process.argv[1]).json(); await Bun.write(process.argv[3],typeof r.stderr==="string"?r.stderr:""); if(r.status!=="completed" || typeof r.result!=="string" || !r.result.trim()) process.exit(1); await Bun.write(process.argv[2],r.result)' "$_OUTSIDE_TMP/result.json" "$_OUTSIDE_TMP/text" "$_OUTSIDE_TMP/stderr" || { [ "$_OUTSIDE_EXIT" -ne 0 ] || _OUTSIDE_EXIT=1; }`;
   return `${outsideVoiceGuard(ctx)}
 ${runtimeRootPrelude(ctx)}
 _REPO_ROOT=$(git rev-parse --show-toplevel) || { echo 'ERROR: not in a git repo' >&2; exit 1; }