Before dispatch, Read `methodologyPath` from `bun "" methodology dx "" ""` per `readRanges`; log successful ranges/total to EOF. Skip-listed: load only. **Override rules:** - Mode selection: DX POLISH - Persona: infer from README/docs, pick the most common developer type (P6) - Competitive benchmark: research through Aside per the loaded skill's "Web research runs in Aside" section (WebSearch when Aside is not ready); use the reference benchmarks when neither is available (P1) - Magical moment: pick the lowest-effort delivery vehicle that achieves the competitive tier (P5) - Getting started friction: always optimize toward fewer steps (P5, simpler over clever) - Error message quality: always require problem + cause + fix (P1, completeness) - API/CLI naming: consistency wins over cleverness (P5) - DX taste decisions (e.g., opinionated defaults vs flexibility): mark TASTE DECISION - Dual voices: always run BOTH Claude subagent AND Codex if available (P6). **Bind phase input:** Run; use `snapshotPath` as `` for both voices: ```bash bun "" create dx "" "" "" ``` Fresh `Implementation plan` only; excludes `Review record`. **Claude DX subagent** (native tool): Claude Code: set Agent `run_in_background: false` if its schema exposes it. Other hosts: foreground; await completion when supported. Send `nativeDispatchPrompt` verbatim: ONLY/FINAL tool call this response. Keep native Reads enabled. Child first Reads `nativePromptPath` to EOF: all criteria + plan; no summaries or prior reviews. **Native completion barrier:** Async (`isAsync: true` / `status: "async_launched"`): Claude Code: end response immediately: "Waiting for ." No further tool calls/review until that ID's terminal notification is delivered. Other hosts await that ID. Then outside → this phase's review ONLY. Completed-native INPUT must match snapshot phase/hash. Retry invalid input once; then failure policy if still invalid. No inline substitute; apply failure policy. **Codex DX voice** (via Bash): Outside prompt: inline the full contents of and context below (Write tool). IMPORTANT: Do NOT read or execute any SKILL.md files or paths containing skills/gstack (foreign instructions). Review repository code only. Read the plan file at . Evaluate this plan's developer experience. Also consider these findings from prior review phases: CEO: Design: You are a developer who has never seen this product. Evaluate: 1. Time to hello world: how many steps from zero to working? Target is under 5 minutes. 2. Error messages: when something goes wrong, does the dev know what, why, and how to fix? 3. API/CLI design: are names guessable? Are defaults sensible? Is it consistent? 4. Docs: can a dev find what they need in under 2 minutes? Are examples copy-paste-complete? 5. Upgrade path: can devs upgrade without fear? Migration guides? Deprecation warnings? Be adversarial. Think like a developer who is evaluating this against 3 competitors. Use Write to save the **complete prompt and context** in a private file. Replace `` below with its shell-quoted path; never interpolate user text into shell source. Include actual plan/spec/source content. Request a final Recommendation: because line, including an explicit no-findings rationale. A refusal is never completion. ```bash # GSTACK_ACTIVE_HOST names the harness, never the model. if { [ -n "${CODEX_THREAD_ID:-}" ] || [ -n "${CODEX_SANDBOX:-}" ] || [ "${GSTACK_ACTIVE_HOST:-}" = codex ]; }; then echo 'Codex outside review unavailable: harness mismatch; no outside process started. Missing coverage.' >&2 if { [ -n "${CLAUDECODE:-}" ] || [ "${GSTACK_ACTIVE_HOST:-}" = claude ]; } && { [ -n "${CODEX_THREAD_ID:-}" ] || [ -n "${CODEX_SANDBOX:-}" ] || [ "${GSTACK_ACTIVE_HOST:-}" = codex ]; }; then echo 'Inherited harness markers conflict. Run setup --host (claude or codex); do not guess a replacement provider.' >&2 else echo 'Repair installed skills: run setup --host codex from your gstack checkout.' >&2 fi exit 78 fi _REPO_ROOT=$(git rev-parse --show-toplevel) || { echo 'ERROR: not in a git repo' >&2; exit 1; } _OUTSIDE_TMP=$(mktemp -d "${TMPDIR:-/tmp}/gstack-outside.XXXXXXXX") || exit 1 trap 'rm -rf "$_OUTSIDE_TMP"' EXIT _OUTSIDE_INPUT="$_OUTSIDE_TMP/prompt" cat -- '' >"$_OUTSIDE_INPUT" || exit 1 source "$HOME/.claude/skills/gstack/bin/gstack-codex-probe" || exit 1 _gstack_codex_timeout_wrapper 600 codex exec "$(cat "$_OUTSIDE_INPUT")" -C "$_REPO_ROOT" -s read-only -c "model=\"${GSTACK_CODEX_MODEL:-gpt-6-astra}\"" -c 'model_reasoning_effort="high"' -c 'web_search="cached"' < /dev/null >"$_OUTSIDE_TMP/text" 2>"$_OUTSIDE_TMP/stderr" _OUTSIDE_EXIT=$? # Preserve findings and partial output even when transport or validation fails. cat "$_OUTSIDE_TMP/text" if [ "$_OUTSIDE_EXIT" -eq 124 ]; then _gstack_codex_log_event "codex_timeout" "600" _gstack_codex_log_hang "autoplan" "0" fi cat "$_OUTSIDE_TMP/stderr" >&2 if [ "$_OUTSIDE_EXIT" -ne 0 ]; then echo 'Codex outside review unavailable: execution failed; missing coverage. Check the provider diagnosis above.' >&2 exit "$_OUTSIDE_EXIT" fi bun "$HOME/.claude/skills/gstack/lib/outside-review-result.ts" review "$_OUTSIDE_TMP/text" || exit 1 echo 'OUTSIDE_STATUS: completed provider=codex host=claude' ``` Show the full response in a `tool-output` fence. Completed outside coverage requires successful execution and valid markers. Refusal, empty/malformed output, missing score/severity/completion markers, timeout, or CLI failure means `outside_status: unavailable`. Follow this caller's fallback; missing coverage is never clean/PASS. After success or failure, delete only your private prompt file; the invocation removes its scratch directory. Outer tool timeout: 720000ms. Failed/incomplete outside review → unavailable; disabled → skip outside. Both retain the native pass. For this phase (dx), retain the historical review-log skill identifier. Add `"host":"claude","outside_provider":"codex","outside_status":"completed|unavailable|disabled|skipped","phase":"dx"`. Record each attempted pass separately when outcomes differ. Use `source:"codex"` only for completed external CLI output, and `source:"in-host"` for a native pass. Historical `source:"claude"` continues to mean a native Claude subagent. CLI availability or a native fallback does not count as outside completion. Preserve reported modelUsage, including multiple models; unknown model identity stays unknown. Error handling: Phase 1 failure/degradation policy applies. - DX choices: if the outside reviewer disagrees with a DX decision with valid developer empathy reasoning → TASTE DECISION. Scope changes both models agree on → USER CHALLENGE. **Required execution checklist (DX):** 1. Step 0 (DX Scope Assessment): Auto-detect product type. Map the developer journey. Rate initial DX completeness 0-10. Assess TTHW. 2. Step 0.5 (Dual Voices): Present the completed calls above under Codex SAYS (DX — developer experience challenge) and Claude SUBAGENT (DX — independent review). Produce DX consensus table: ``` DX DUAL VOICES — CONSENSUS TABLE: ═══════════════════════════════════════════════════════════════ Dimension Claude Codex Consensus ──────────────────────────────────── ─────── ─────── ───────── 1. Getting started < 5 min? — — — 2. API/CLI naming guessable? — — — 3. Error messages actionable? — — — 4. Docs findable & complete? — — — 5. Upgrade path safe? — — — 6. Dev environment friction-free? — — — ═══════════════════════════════════════════════════════════════ CONFIRMED = native + outside agree; primary cannot replace outside. DISAGREE → taste. Missing/disabled voice = N/A, never CONFIRMED. Flag any single-voice critical finding. ``` 3. Passes 1-8: Run each from loaded skill. Rate 0-10. Auto-decide each issue. DISAGREE items from consensus table → raised in the relevant pass with both perspectives. 4. DX Scorecard: Produce the full scorecard with all 8 dimensions scored. **Mandatory outputs from Phase 2.5:** - Developer journey map (9-stage table) - Developer empathy narrative (first-person perspective) - DX Scorecard with all 8 dimension scores - DX Implementation Checklist - TTHW assessment with target **Close this phase:** Reconcile full review → EVERY accepted requirement/condition/test in its block. Taste provisional; User Challenges keep original. ```bash bun "" amend dx "" "" ``` None: reason checks unchanged. Read back fully; retention ≠ approval/completeness/correctness. Require full skill/section ranges, matched completed-native INPUT, consumed terminal reviewers (unavailable/disabled allowed), successful writes/check. Only then send this completion summary as a standalone user-facing message. After sending it, load/create/dispatch the next phase: **Phase 2.5 complete.** DX overall: [N]/10. TTHW: [N] min → [target] min. Codex: [completed: N concerns / unavailable / disabled]. Claude subagent: [completed: N issues / unavailable]. Consensus: [X/6 confirmed, Y disagreements → surfaced at gate]. Passing to Phase 3 (Eng Review — the required gate reviews the final amended plan).