Initial import from garrytan/gstack@026751e (main snapshot via local relay)

Source: https://github.com/garrytan/gstack/commit/026751e

benchmark-models/SKILL.md

@@ -0,0 +1,602 @@
+---
+name: benchmark-models
+preamble-tier: 1
+version: 1.0.0
+description: |
+  Cross-model benchmark for gstack skills. Runs the same prompt through Claude,
+  GPT (via Codex CLI), and Gemini side-by-side — compares latency, tokens, cost,
+  and optionally quality via LLM judge. Answers "which model is actually best
+  for this skill?" with data instead of vibes. Separate from /benchmark, which
+  measures web page performance. Use when: "benchmark models", "compare models",
+  "which model is best for X", "cross-model comparison", "model shootout". (gstack)
+  Voice triggers (speech-to-text aliases): "compare models", "model shootout", "which model is best".
+triggers:
+  - cross model benchmark
+  - compare claude gpt gemini
+  - benchmark skill across models
+  - which model should I use
+allowed-tools:
+  - Bash
+  - Read
+  - AskUserQuestion
+---
+<!-- AUTO-GENERATED from SKILL.md.tmpl — do not edit directly -->
+<!-- Regenerate: bun run gen:skill-docs -->
+
+## Preamble (run first)
+
+```bash
+_UPD=$(~/.claude/skills/gstack/bin/gstack-update-check 2>/dev/null || .claude/skills/gstack/bin/gstack-update-check 2>/dev/null || true)
+[ -n "$_UPD" ] && echo "$_UPD" || true
+mkdir -p ~/.gstack/sessions
+touch ~/.gstack/sessions/"$PPID"
+_SESSIONS=$(find ~/.gstack/sessions -mmin -120 -type f 2>/dev/null | wc -l | tr -d ' ')
+find ~/.gstack/sessions -mmin +120 -type f -exec rm {} + 2>/dev/null || true
+_PROACTIVE=$(~/.claude/skills/gstack/bin/gstack-config get proactive 2>/dev/null || echo "true")
+_PROACTIVE_PROMPTED=$([ -f ~/.gstack/.proactive-prompted ] && echo "yes" || echo "no")
+_BRANCH=$(git branch --show-current 2>/dev/null || echo "unknown")
+echo "BRANCH: $_BRANCH"
+_SKILL_PREFIX=$(~/.claude/skills/gstack/bin/gstack-config get skill_prefix 2>/dev/null || echo "false")
+echo "PROACTIVE: $_PROACTIVE"
+echo "PROACTIVE_PROMPTED: $_PROACTIVE_PROMPTED"
+echo "SKILL_PREFIX: $_SKILL_PREFIX"
+source <(~/.claude/skills/gstack/bin/gstack-repo-mode 2>/dev/null) || true
+REPO_MODE=${REPO_MODE:-unknown}
+echo "REPO_MODE: $REPO_MODE"
+_LAKE_SEEN=$([ -f ~/.gstack/.completeness-intro-seen ] && echo "yes" || echo "no")
+echo "LAKE_INTRO: $_LAKE_SEEN"
+_TEL=$(~/.claude/skills/gstack/bin/gstack-config get telemetry 2>/dev/null || true)
+_TEL_PROMPTED=$([ -f ~/.gstack/.telemetry-prompted ] && echo "yes" || echo "no")
+_TEL_START=$(date +%s)
+_SESSION_ID="$$-$(date +%s)"
+echo "TELEMETRY: ${_TEL:-off}"
+echo "TEL_PROMPTED: $_TEL_PROMPTED"
+_EXPLAIN_LEVEL=$(~/.claude/skills/gstack/bin/gstack-config get explain_level 2>/dev/null || echo "default")
+if [ "$_EXPLAIN_LEVEL" != "default" ] && [ "$_EXPLAIN_LEVEL" != "terse" ]; then _EXPLAIN_LEVEL="default"; fi
+echo "EXPLAIN_LEVEL: $_EXPLAIN_LEVEL"
+_QUESTION_TUNING=$(~/.claude/skills/gstack/bin/gstack-config get question_tuning 2>/dev/null || echo "false")
+echo "QUESTION_TUNING: $_QUESTION_TUNING"
+mkdir -p ~/.gstack/analytics
+if [ "$_TEL" != "off" ]; then
+echo '{"skill":"benchmark-models","ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","repo":"'$(basename "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null || echo "unknown")'"}'  >> ~/.gstack/analytics/skill-usage.jsonl 2>/dev/null || true
+fi
+for _PF in $(find ~/.gstack/analytics -maxdepth 1 -name '.pending-*' 2>/dev/null); do
+  if [ -f "$_PF" ]; then
+    if [ "$_TEL" != "off" ] && [ -x "~/.claude/skills/gstack/bin/gstack-telemetry-log" ]; then
+      ~/.claude/skills/gstack/bin/gstack-telemetry-log --event-type skill_run --skill _pending_finalize --outcome unknown --session-id "$_SESSION_ID" 2>/dev/null || true
+    fi
+    rm -f "$_PF" 2>/dev/null || true
+  fi
+  break
+done
+eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)" 2>/dev/null || true
+_LEARN_FILE="${GSTACK_HOME:-$HOME/.gstack}/projects/${SLUG:-unknown}/learnings.jsonl"
+if [ -f "$_LEARN_FILE" ]; then
+  _LEARN_COUNT=$(wc -l < "$_LEARN_FILE" 2>/dev/null | tr -d ' ')
+  echo "LEARNINGS: $_LEARN_COUNT entries loaded"
+  if [ "$_LEARN_COUNT" -gt 5 ] 2>/dev/null; then
+    ~/.claude/skills/gstack/bin/gstack-learnings-search --limit 3 2>/dev/null || true
+  fi
+else
+  echo "LEARNINGS: 0"
+fi
+~/.claude/skills/gstack/bin/gstack-timeline-log '{"skill":"benchmark-models","event":"started","branch":"'"$_BRANCH"'","session":"'"$_SESSION_ID"'"}' 2>/dev/null &
+_HAS_ROUTING="no"
+if [ -f CLAUDE.md ] && grep -q "## Skill routing" CLAUDE.md 2>/dev/null; then
+  _HAS_ROUTING="yes"
+fi
+_ROUTING_DECLINED=$(~/.claude/skills/gstack/bin/gstack-config get routing_declined 2>/dev/null || echo "false")
+echo "HAS_ROUTING: $_HAS_ROUTING"
+echo "ROUTING_DECLINED: $_ROUTING_DECLINED"
+_VENDORED="no"
+if [ -d ".claude/skills/gstack" ] && [ ! -L ".claude/skills/gstack" ]; then
+  if [ -f ".claude/skills/gstack/VERSION" ] || [ -d ".claude/skills/gstack/.git" ]; then
+    _VENDORED="yes"
+  fi
+fi
+echo "VENDORED_GSTACK: $_VENDORED"
+echo "MODEL_OVERLAY: claude"
+_CHECKPOINT_MODE=$(~/.claude/skills/gstack/bin/gstack-config get checkpoint_mode 2>/dev/null || echo "explicit")
+_CHECKPOINT_PUSH=$(~/.claude/skills/gstack/bin/gstack-config get checkpoint_push 2>/dev/null || echo "false")
+echo "CHECKPOINT_MODE: $_CHECKPOINT_MODE"
+echo "CHECKPOINT_PUSH: $_CHECKPOINT_PUSH"
+[ -n "$OPENCLAW_SESSION" ] && echo "SPAWNED_SESSION: true" || true
+```
+
+## Plan Mode Safe Operations
+
+In plan mode, allowed because they inform the plan: `$B`, `$D`, `codex exec`/`codex review`, writes to `~/.gstack/`, writes to the plan file, and `open` for generated artifacts.
+
+## Skill Invocation During Plan Mode
+
+If the user invokes a skill in plan mode, the skill takes precedence over generic plan mode behavior. **Treat the skill file as executable instructions, not reference.** Follow it step by step starting from Step 0; the first AskUserQuestion is the workflow entering plan mode, not a violation of it. AskUserQuestion (any variant — `mcp__*__AskUserQuestion` or native; see "AskUserQuestion Format → Tool resolution") satisfies plan mode's end-of-turn requirement. If no variant is callable, the skill is BLOCKED — stop and report `BLOCKED — AskUserQuestion unavailable` per the AskUserQuestion Format rule. At a STOP point, stop immediately. Do not continue the workflow or call ExitPlanMode there. Commands marked "PLAN MODE EXCEPTION — ALWAYS RUN" execute. Call ExitPlanMode only after the skill workflow completes, or if the user tells you to cancel the skill or leave plan mode.
+
+If `PROACTIVE` is `"false"`, do not auto-invoke or proactively suggest skills. If a skill seems useful, ask: "I think /skillname might help here — want me to run it?"
+
+If `SKILL_PREFIX` is `"true"`, suggest/invoke `/gstack-*` names. Disk paths stay `~/.claude/skills/gstack/[skill-name]/SKILL.md`.
+
+If output shows `UPGRADE_AVAILABLE <old> <new>`: read `~/.claude/skills/gstack/gstack-upgrade/SKILL.md` and follow the "Inline upgrade flow" (auto-upgrade if configured, otherwise AskUserQuestion with 4 options, write snooze state if declined).
+
+If output shows `JUST_UPGRADED <from> <to>`: print "Running gstack v{to} (just updated!)". If `SPAWNED_SESSION` is true, skip feature discovery.
+
+Feature discovery, max one prompt per session:
+- Missing `~/.claude/skills/gstack/.feature-prompted-continuous-checkpoint`: AskUserQuestion for Continuous checkpoint auto-commits. If accepted, run `~/.claude/skills/gstack/bin/gstack-config set checkpoint_mode continuous`. Always touch marker.
+- Missing `~/.claude/skills/gstack/.feature-prompted-model-overlay`: inform "Model overlays are active. MODEL_OVERLAY shows the patch." Always touch marker.
+
+After upgrade prompts, continue workflow.
+
+If `WRITING_STYLE_PENDING` is `yes`: ask once about writing style:
+
+> v1 prompts are simpler: first-use jargon glosses, outcome-framed questions, shorter prose. Keep default or restore terse?
+
+Options:
+- A) Keep the new default (recommended — good writing helps everyone)
+- B) Restore V0 prose — set `explain_level: terse`
+
+If A: leave `explain_level` unset (defaults to `default`).
+If B: run `~/.claude/skills/gstack/bin/gstack-config set explain_level terse`.
+
+Always run (regardless of choice):
+```bash
+rm -f ~/.gstack/.writing-style-prompt-pending
+touch ~/.gstack/.writing-style-prompted
+```
+
+Skip if `WRITING_STYLE_PENDING` is `no`.
+
+If `LAKE_INTRO` is `no`: say "gstack follows the **Boil the Lake** principle — do the complete thing when AI makes marginal cost near-zero. Read more: https://garryslist.org/posts/boil-the-ocean" Offer to open:
+
+```bash
+open https://garryslist.org/posts/boil-the-ocean
+touch ~/.gstack/.completeness-intro-seen
+```
+
+Only run `open` if yes. Always run `touch`.
+
+If `TEL_PROMPTED` is `no` AND `LAKE_INTRO` is `yes`: ask telemetry once via AskUserQuestion:
+
+> Help gstack get better. Share usage data only: skill, duration, crashes, stable device ID. No code, file paths, or repo names.
+
+Options:
+- A) Help gstack get better! (recommended)
+- B) No thanks
+
+If A: run `~/.claude/skills/gstack/bin/gstack-config set telemetry community`
+
+If B: ask follow-up:
+
+> Anonymous mode sends only aggregate usage, no unique ID.
+
+Options:
+- A) Sure, anonymous is fine
+- B) No thanks, fully off
+
+If B→A: run `~/.claude/skills/gstack/bin/gstack-config set telemetry anonymous`
+If B→B: run `~/.claude/skills/gstack/bin/gstack-config set telemetry off`
+
+Always run:
+```bash
+touch ~/.gstack/.telemetry-prompted
+```
+
+Skip if `TEL_PROMPTED` is `yes`.
+
+If `PROACTIVE_PROMPTED` is `no` AND `TEL_PROMPTED` is `yes`: ask once:
+
+> Let gstack proactively suggest skills, like /qa for "does this work?" or /investigate for bugs?
+
+Options:
+- A) Keep it on (recommended)
+- B) Turn it off — I'll type /commands myself
+
+If A: run `~/.claude/skills/gstack/bin/gstack-config set proactive true`
+If B: run `~/.claude/skills/gstack/bin/gstack-config set proactive false`
+
+Always run:
+```bash
+touch ~/.gstack/.proactive-prompted
+```
+
+Skip if `PROACTIVE_PROMPTED` is `yes`.
+
+If `HAS_ROUTING` is `no` AND `ROUTING_DECLINED` is `false` AND `PROACTIVE_PROMPTED` is `yes`:
+Check if a CLAUDE.md file exists in the project root. If it does not exist, create it.
+
+Use AskUserQuestion:
+
+> gstack works best when your project's CLAUDE.md includes skill routing rules.
+
+Options:
+- A) Add routing rules to CLAUDE.md (recommended)
+- B) No thanks, I'll invoke skills manually
+
+If A: Append this section to the end of CLAUDE.md:
+
+```markdown
+
+## Skill routing
+
+When the user's request matches an available skill, invoke it via the Skill tool. When in doubt, invoke the skill.
+
+Key routing rules:
+- Product ideas/brainstorming → invoke /office-hours
+- Strategy/scope → invoke /plan-ceo-review
+- Architecture → invoke /plan-eng-review
+- Design system/plan review → invoke /design-consultation or /plan-design-review
+- Full review pipeline → invoke /autoplan
+- Bugs/errors → invoke /investigate
+- QA/testing site behavior → invoke /qa or /qa-only
+- Code review/diff check → invoke /review
+- Visual polish → invoke /design-review
+- Ship/deploy/PR → invoke /ship or /land-and-deploy
+- Save progress → invoke /context-save
+- Resume context → invoke /context-restore
+```
+
+Then commit the change: `git add CLAUDE.md && git commit -m "chore: add gstack skill routing rules to CLAUDE.md"`
+
+If B: run `~/.claude/skills/gstack/bin/gstack-config set routing_declined true` and say they can re-enable with `gstack-config set routing_declined false`.
+
+This only happens once per project. Skip if `HAS_ROUTING` is `yes` or `ROUTING_DECLINED` is `true`.
+
+If `VENDORED_GSTACK` is `yes`, warn once via AskUserQuestion unless `~/.gstack/.vendoring-warned-$SLUG` exists:
+
+> This project has gstack vendored in `.claude/skills/gstack/`. Vendoring is deprecated.
+> Migrate to team mode?
+
+Options:
+- A) Yes, migrate to team mode now
+- B) No, I'll handle it myself
+
+If A:
+1. Run `git rm -r .claude/skills/gstack/`
+2. Run `echo '.claude/skills/gstack/' >> .gitignore`
+3. Run `~/.claude/skills/gstack/bin/gstack-team-init required` (or `optional`)
+4. Run `git add .claude/ .gitignore CLAUDE.md && git commit -m "chore: migrate gstack from vendored to team mode"`
+5. Tell the user: "Done. Each developer now runs: `cd ~/.claude/skills/gstack && ./setup --team`"
+
+If B: say "OK, you're on your own to keep the vendored copy up to date."
+
+Always run (regardless of choice):
+```bash
+eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)" 2>/dev/null || true
+touch ~/.gstack/.vendoring-warned-${SLUG:-unknown}
+```
+
+If marker exists, skip.
+
+If `SPAWNED_SESSION` is `"true"`, you are running inside a session spawned by an
+AI orchestrator (e.g., OpenClaw). In spawned sessions:
+- Do NOT use AskUserQuestion for interactive prompts. Auto-choose the recommended option.
+- Do NOT run upgrade checks, telemetry prompts, routing injection, or lake intro.
+- Focus on completing the task and reporting results via prose output.
+- End with a completion report: what shipped, decisions made, anything uncertain.
+
+## Artifacts Sync (skill start)
+
+```bash
+_GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
+# Prefer the v1.27.0.0 artifacts file; fall back to brain file for users
+# upgrading mid-stream before the migration script runs.
+if [ -f "$HOME/.gstack-artifacts-remote.txt" ]; then
+  _BRAIN_REMOTE_FILE="$HOME/.gstack-artifacts-remote.txt"
+else
+  _BRAIN_REMOTE_FILE="$HOME/.gstack-brain-remote.txt"
+fi
+_BRAIN_SYNC_BIN="~/.claude/skills/gstack/bin/gstack-brain-sync"
+_BRAIN_CONFIG_BIN="~/.claude/skills/gstack/bin/gstack-config"
+
+# /sync-gbrain context-load: teach the agent to use gbrain when it's available.
+# Per-worktree pin: post-spike redesign uses kubectl-style `.gbrain-source` in the
+# git toplevel to scope queries. Look for the pin in the worktree (not a global
+# state file) so that opening worktree B without a pin doesn't claim "indexed"
+# just because worktree A was synced. Empty string when gbrain is not
+# configured (zero context cost for non-gbrain users).
+_GBRAIN_CONFIG="$HOME/.gbrain/config.json"
+if [ -f "$_GBRAIN_CONFIG" ] && command -v gbrain >/dev/null 2>&1; then
+  _GBRAIN_VERSION_OK=$(gbrain --version 2>/dev/null | grep -c '^gbrain ' || echo 0)
+  if [ "$_GBRAIN_VERSION_OK" -gt 0 ] 2>/dev/null; then
+    _GBRAIN_PIN_PATH=""
+    _REPO_TOP=$(git rev-parse --show-toplevel 2>/dev/null || echo "")
+    if [ -n "$_REPO_TOP" ] && [ -f "$_REPO_TOP/.gbrain-source" ]; then
+      _GBRAIN_PIN_PATH="$_REPO_TOP/.gbrain-source"
+    fi
+    if [ -n "$_GBRAIN_PIN_PATH" ]; then
+      echo "GBrain configured. Prefer \`gbrain search\`/\`gbrain query\` over Grep for"
+      echo "semantic questions; use \`gbrain code-def\`/\`code-refs\`/\`code-callers\` for"
+      echo "symbol-aware code lookup. See \"## GBrain Search Guidance\" in CLAUDE.md."
+      echo "Run /sync-gbrain to refresh."
+    else
+      echo "GBrain configured but this worktree isn't pinned yet. Run \`/sync-gbrain --full\`"
+      echo "before relying on \`gbrain search\` for code questions in this worktree."
+      echo "Falls back to Grep until pinned."
+    fi
+  fi
+fi
+
+_BRAIN_SYNC_MODE=$("$_BRAIN_CONFIG_BIN" get artifacts_sync_mode 2>/dev/null || echo off)
+
+# Detect remote-MCP mode (Path 4 of /setup-gbrain). Local artifacts sync is
+# a no-op in remote mode; the brain server pulls from GitHub/GitLab on its
+# own cadence. Read claude.json directly to keep this preamble fast (no
+# subprocess to claude CLI on every skill start).
+_GBRAIN_MCP_MODE="none"
+if command -v jq >/dev/null 2>&1 && [ -f "$HOME/.claude.json" ]; then
+  _GBRAIN_MCP_TYPE=$(jq -r '.mcpServers.gbrain.type // .mcpServers.gbrain.transport // empty' "$HOME/.claude.json" 2>/dev/null)
+  case "$_GBRAIN_MCP_TYPE" in
+    url|http|sse) _GBRAIN_MCP_MODE="remote-http" ;;
+    stdio) _GBRAIN_MCP_MODE="local-stdio" ;;
+  esac
+fi
+
+if [ -f "$_BRAIN_REMOTE_FILE" ] && [ ! -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" = "off" ]; then
+  _BRAIN_NEW_URL=$(head -1 "$_BRAIN_REMOTE_FILE" 2>/dev/null | tr -d '[:space:]')
+  if [ -n "$_BRAIN_NEW_URL" ]; then
+    echo "ARTIFACTS_SYNC: artifacts repo detected: $_BRAIN_NEW_URL"
+    echo "ARTIFACTS_SYNC: run 'gstack-brain-restore' to pull your cross-machine artifacts (or 'gstack-config set artifacts_sync_mode off' to dismiss forever)"
+  fi
+fi
+
+if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
+  _BRAIN_LAST_PULL_FILE="$_GSTACK_HOME/.brain-last-pull"
+  _BRAIN_NOW=$(date +%s)
+  _BRAIN_DO_PULL=1
+  if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
+    _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
+    [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
+  fi
+  if [ "$_BRAIN_DO_PULL" = "1" ]; then
+    ( cd "$_GSTACK_HOME" && git fetch origin >/dev/null 2>&1 && git merge --ff-only "origin/$(git rev-parse --abbrev-ref HEAD)" >/dev/null 2>&1 ) || true
+    echo "$_BRAIN_NOW" > "$_BRAIN_LAST_PULL_FILE"
+  fi
+  "$_BRAIN_SYNC_BIN" --once 2>/dev/null || true
+fi
+
+if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
+  # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
+  # pulls from GitHub/GitLab). Show the user this is by design, not broken.
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
+elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
+  _BRAIN_QUEUE_DEPTH=0
+  [ -f "$_GSTACK_HOME/.brain-queue.jsonl" ] && _BRAIN_QUEUE_DEPTH=$(wc -l < "$_GSTACK_HOME/.brain-queue.jsonl" | tr -d ' ')
+  _BRAIN_LAST_PUSH="never"
+  [ -f "$_GSTACK_HOME/.brain-last-push" ] && _BRAIN_LAST_PUSH=$(cat "$_GSTACK_HOME/.brain-last-push" 2>/dev/null || echo never)
+  echo "ARTIFACTS_SYNC: mode=$_BRAIN_SYNC_MODE | last_push=$_BRAIN_LAST_PUSH | queue=$_BRAIN_QUEUE_DEPTH"
+else
+  echo "ARTIFACTS_SYNC: off"
+fi
+```
+
+
+
+Privacy stop-gate: if output shows `ARTIFACTS_SYNC: off`, `artifacts_sync_mode_prompted` is `false`, and gbrain is on PATH or `gbrain doctor --fast --json` works, ask once:
+
+> gstack can publish your artifacts (CEO plans, designs, reports) to a private GitHub repo that GBrain indexes across machines. How much should sync?
+
+Options:
+- A) Everything allowlisted (recommended)
+- B) Only artifacts
+- C) Decline, keep everything local
+
+After answer:
+
+```bash
+# Chosen mode: full | artifacts-only | off
+"$_BRAIN_CONFIG_BIN" set artifacts_sync_mode <choice>
+"$_BRAIN_CONFIG_BIN" set artifacts_sync_mode_prompted true
+```
+
+If A/B and `~/.gstack/.git` is missing, ask whether to run `gstack-artifacts-init`. Do not block the skill.
+
+At skill END before telemetry:
+
+```bash
+"~/.claude/skills/gstack/bin/gstack-brain-sync" --discover-new 2>/dev/null || true
+"~/.claude/skills/gstack/bin/gstack-brain-sync" --once 2>/dev/null || true
+```
+
+
+## Model-Specific Behavioral Patch (claude)
+
+The following nudges are tuned for the claude model family. They are
+**subordinate** to skill workflow, STOP points, AskUserQuestion gates, plan-mode
+safety, and /ship review gates. If a nudge below conflicts with skill instructions,
+the skill wins. Treat these as preferences, not rules.
+
+**Todo-list discipline.** When working through a multi-step plan, mark each task
+complete individually as you finish it. Do not batch-complete at the end. If a task
+turns out to be unnecessary, mark it skipped with a one-line reason.
+
+**Think before heavy actions.** For complex operations (refactors, migrations,
+non-trivial new features), briefly state your approach before executing. This lets
+the user course-correct cheaply instead of mid-flight.
+
+**Dedicated tools over Bash.** Prefer Read, Edit, Write, Glob, Grep over shell
+equivalents (cat, sed, find, grep). The dedicated tools are cheaper and clearer.
+
+## Voice
+
+Direct, concrete, builder-to-builder. Name the file, function, command, and user-visible impact. No filler.
+
+No em dashes. No AI vocabulary: delve, crucial, robust, comprehensive, nuanced, multifaceted. Never corporate or academic. Short paragraphs. End with what to do.
+
+The user has context you do not. Cross-model agreement is a recommendation, not a decision. The user decides.
+
+## Completion Status Protocol
+
+When completing a skill workflow, report status using one of:
+- **DONE** — completed with evidence.
+- **DONE_WITH_CONCERNS** — completed, but list concerns.
+- **BLOCKED** — cannot proceed; state blocker and what was tried.
+- **NEEDS_CONTEXT** — missing info; state exactly what is needed.
+
+Escalate after 3 failed attempts, uncertain security-sensitive changes, or scope you cannot verify. Format: `STATUS`, `REASON`, `ATTEMPTED`, `RECOMMENDATION`.
+
+## Operational Self-Improvement
+
+Before completing, if you discovered a durable project quirk or command fix that would save 5+ minutes next time, log it:
+
+```bash
+~/.claude/skills/gstack/bin/gstack-learnings-log '{"skill":"SKILL_NAME","type":"operational","key":"SHORT_KEY","insight":"DESCRIPTION","confidence":N,"source":"observed"}'
+```
+
+Do not log obvious facts or one-time transient errors.
+
+## Telemetry (run last)
+
+After workflow completion, log telemetry. Use skill `name:` from frontmatter. OUTCOME is success/error/abort/unknown.
+
+**PLAN MODE EXCEPTION — ALWAYS RUN:** This command writes telemetry to
+`~/.gstack/analytics/`, matching preamble analytics writes.
+
+Run this bash:
+
+```bash
+_TEL_END=$(date +%s)
+_TEL_DUR=$(( _TEL_END - _TEL_START ))
+rm -f ~/.gstack/analytics/.pending-"$_SESSION_ID" 2>/dev/null || true
+# Session timeline: record skill completion (local-only, never sent anywhere)
+~/.claude/skills/gstack/bin/gstack-timeline-log '{"skill":"SKILL_NAME","event":"completed","branch":"'$(git branch --show-current 2>/dev/null || echo unknown)'","outcome":"OUTCOME","duration_s":"'"$_TEL_DUR"'","session":"'"$_SESSION_ID"'"}' 2>/dev/null || true
+# Local analytics (gated on telemetry setting)
+if [ "$_TEL" != "off" ]; then
+echo '{"skill":"SKILL_NAME","duration_s":"'"$_TEL_DUR"'","outcome":"OUTCOME","browse":"USED_BROWSE","session":"'"$_SESSION_ID"'","ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'"}' >> ~/.gstack/analytics/skill-usage.jsonl 2>/dev/null || true
+fi
+# Remote telemetry (opt-in, requires binary)
+if [ "$_TEL" != "off" ] && [ -x ~/.claude/skills/gstack/bin/gstack-telemetry-log ]; then
+  ~/.claude/skills/gstack/bin/gstack-telemetry-log \
+    --skill "SKILL_NAME" --duration "$_TEL_DUR" --outcome "OUTCOME" \
+    --used-browse "USED_BROWSE" --session-id "$_SESSION_ID" 2>/dev/null &
+fi
+```
+
+Replace `SKILL_NAME`, `OUTCOME`, and `USED_BROWSE` before running.
+
+## Plan Status Footer
+
+Skills that run plan reviews (`/plan-*-review`, `/codex review`) include the EXIT PLAN MODE GATE blocking checklist at the end of the skill, which verifies the plan file ends with `## GSTACK REVIEW REPORT` before ExitPlanMode is called. Skills that don't run plan reviews (operational skills like `/ship`, `/qa`, `/review`) typically don't operate in plan mode and have no review report to verify; this footer is a no-op for them. Writing the plan file is the one edit allowed in plan mode.
+
+# /benchmark-models — Cross-Model Skill Benchmark
+
+You are running the `/benchmark-models` workflow. Wraps the `gstack-model-benchmark` binary with an interactive flow that picks a prompt, confirms providers, previews auth, and runs the benchmark.
+
+Different from `/benchmark` — that skill measures web page performance (Core Web Vitals, load times). This skill measures AI model performance on gstack skills or arbitrary prompts.
+
+---
+
+## Step 0: Locate the binary
+
+```bash
+BIN="$HOME/.claude/skills/gstack/bin/gstack-model-benchmark"
+[ -x "$BIN" ] || BIN=".claude/skills/gstack/bin/gstack-model-benchmark"
+[ -x "$BIN" ] || { echo "ERROR: gstack-model-benchmark not found. Run ./setup in the gstack install dir." >&2; exit 1; }
+echo "BIN: $BIN"
+```
+
+If not found, stop and tell the user to reinstall gstack.
+
+---
+
+## Step 1: Choose a prompt
+
+Use AskUserQuestion with the preamble format:
+- **Re-ground:** current project + branch.
+- **Simplify:** "A cross-model benchmark runs the same prompt through 2-3 AI models and shows you how they compare on speed, cost, and output quality. What prompt should we use?"
+- **RECOMMENDATION:** A because benchmarking against a real skill exposes tool-use differences, not just raw generation.
+- **Options:**
+  - A) Benchmark one of my gstack skills (we'll pick which skill next). Completeness: 10/10.
+  - B) Use an inline prompt — type it on the next turn. Completeness: 8/10.
+  - C) Point at a prompt file on disk — specify path on the next turn. Completeness: 8/10.
+
+If A: list top-level gstack skills that have SKILL.md files (from `find . -maxdepth 2 -name SKILL.md -not -path './.*'`), ask the user to pick one via a second AskUserQuestion. Use the picked SKILL.md path as the prompt file.
+
+If B: ask the user for the inline prompt. Use it verbatim via `--prompt "<text>"`.
+
+If C: ask for the path. Verify it exists. Use as positional argument.
+
+---
+
+## Step 2: Choose providers
+
+```bash
+"$BIN" --prompt "unused, dry-run" --models claude,gpt,gemini --dry-run
+```
+
+Show the dry-run output. The "Adapter availability" section tells the user which providers will actually run (OK) vs skip (NOT READY — remediation hint included).
+
+If ALL three show NOT READY: stop with a clear message — benchmark can't run without at least one authed provider. Suggest `claude login`, `codex login`, or `gemini login` / `export GOOGLE_API_KEY`.
+
+If at least one is OK: AskUserQuestion:
+- **Simplify:** "Which models should we include? The dry-run above showed which are authed. Unauthed ones will be skipped cleanly — they won't abort the batch."
+- **RECOMMENDATION:** A (all authed providers) because running as many as possible gives the richest comparison.
+- **Options:**
+  - A) All authed providers. Completeness: 10/10.
+  - B) Only Claude. Completeness: 6/10 (no cross-model signal — use /ship's review for solo claude benchmarks instead).
+  - C) Pick two — specify on next turn. Completeness: 8/10.
+
+---
+
+## Step 3: Decide on judge
+
+```bash
+[ -n "$ANTHROPIC_API_KEY" ] || grep -q 'ANTHROPIC' "$HOME/.claude/.credentials.json" 2>/dev/null && echo "JUDGE_AVAILABLE" || echo "JUDGE_UNAVAILABLE"
+```
+
+If judge is available, AskUserQuestion:
+- **Simplify:** "The quality judge scores each model's output on a 0-10 scale using Anthropic's Claude as a tiebreaker. Adds ~$0.05/run. Recommended if you care about output quality, not just latency and cost."
+- **RECOMMENDATION:** A — the whole point is comparing quality, not just speed.
+- **Options:**
+  - A) Enable judge (adds ~$0.05). Completeness: 10/10.
+  - B) Skip judge — speed/cost/tokens only. Completeness: 7/10.
+
+If judge is NOT available, skip this question and omit the `--judge` flag.
+
+---
+
+## Step 4: Run the benchmark
+
+Construct the command from Step 1, 2, 3 decisions:
+
+```bash
+"$BIN" <prompt-spec> --models <picked-models> [--judge] --output table
+```
+
+Where `<prompt-spec>` is either `--prompt "<text>"` (Step 1B), a file path (Step 1A or 1C), and `<picked-models>` is the comma-separated list from Step 2.
+
+Stream the output as it arrives. This is slow — each provider runs the prompt fully. Expect 30s-5min depending on prompt complexity and whether `--judge` is on.
+
+---
+
+## Step 5: Interpret results
+
+After the table prints, summarize for the user:
+- **Fastest** — provider with lowest latency.
+- **Cheapest** — provider with lowest cost.
+- **Highest quality** (if `--judge` ran) — provider with highest score.
+- **Best overall** — use judgment. If judge ran: quality-weighted. Otherwise: note the tradeoff the user needs to make.
+
+If any provider hit an error (auth/timeout/rate_limit), call it out with the remediation path.
+
+---
+
+## Step 6: Offer to save results
+
+AskUserQuestion:
+- **Simplify:** "Save this benchmark as JSON so you can compare future runs against it?"
+- **RECOMMENDATION:** A — skill performance drifts as providers update their models; a saved baseline catches quality regressions.
+- **Options:**
+  - A) Save to `~/.gstack/benchmarks/<date>-<skill-or-prompt-slug>.json`. Completeness: 10/10.
+  - B) Just print, don't save. Completeness: 5/10 (loses trend data).
+
+If A: re-run with `--output json` and tee to the dated file. Print the path so the user can diff future runs against it.
+
+---
+
+## Important Rules
+
+- **Never run a real benchmark without Step 2's dry-run first.** Users need to see auth status before spending API calls.
+- **Never hardcode model names.** Always pass providers from user's Step 2 choice — the binary handles the rest.
+- **Never auto-include `--judge`.** It adds real cost; user must opt in.
+- **If zero providers are authed, STOP.** Don't attempt the benchmark — it produces no useful output.
+- **Cost is visible.** Every run shows per-provider cost in the table. Users should see it before the next run.