_SS="$HOME/.claude/skills/gstack/bin/gstack-skill-start"
[ -x "$_SS" ] || _SS=".claude/skills/gstack/bin/gstack-skill-start"
"$_SS" --skill "plan-tune" --model "claude" --parent-pid "$PPID" \
  || echo "SKILL_START: unavailable — stale install; run ./setup or /gstack-upgrade (preamble degraded, continue the user's task)"

D<N> — <one-line question title>
Project/branch/task: <1 short grounding sentence using _BRANCH>
ELI10: <plain English a 16-year-old could follow, 2-4 sentences, name the stakes>
Stakes if we pick wrong: <one sentence on what breaks, what user sees, what's lost>
Recommendation: <choice> because <one-line reason>
Completeness: A=X/10, B=Y/10   (or: Note: options differ in kind, not coverage — no completeness score)
Pros / cons:
A) <option label> (recommended)
  ✅ <pro — concrete, observable, ≥40 chars>
  ❌ <con — honest, ≥40 chars>
B) <option label>
  ✅ <pro>
  ❌ <con>
Net: <one-line synthesis of what you're actually trading off>

eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
_PROJ="${GSTACK_HOME:-$HOME/.gstack}/projects/${SLUG:-unknown}"
if [ -d "$_PROJ" ]; then
  echo "--- RECENT ARTIFACTS ---"
  find "$_PROJ/ceo-plans" "$_PROJ/checkpoints" -type f -name "*.md" 2>/dev/null | xargs -r ls -t 2>/dev/null | head -3
  [ -f "$_PROJ/${BRANCH:-unknown}-reviews.jsonl" ] && echo "REVIEWS: $(wc -l < "$_PROJ/${BRANCH:-unknown}-reviews.jsonl" | tr -d ' ') entries"
  [ -f "$_PROJ/timeline.jsonl" ] && tail -5 "$_PROJ/timeline.jsonl"
  if [ -f "$_PROJ/timeline.jsonl" ]; then
    _LAST=$(grep "\"branch\":\"${_BRANCH}\"" "$_PROJ/timeline.jsonl" 2>/dev/null | grep '"event":"completed"' | tail -1)
    [ -n "$_LAST" ] && echo "LAST_SESSION: $_LAST"
    _RECENT_SKILLS=$(grep "\"branch\":\"${_BRANCH}\"" "$_PROJ/timeline.jsonl" 2>/dev/null | grep '"event":"completed"' | tail -3 | grep -o '"skill":"[^"]*"' | sed 's/"skill":"//;s/"//' | tr '\n' ',')
    [ -n "$_RECENT_SKILLS" ] && echo "RECENT_PATTERN: $_RECENT_SKILLS"
  fi
  _LATEST_CP=$(find "$_PROJ/checkpoints" -name "*.md" -type f 2>/dev/null | xargs -r ls -t 2>/dev/null | head -1)
  [ -n "$_LATEST_CP" ] && echo "LATEST_CHECKPOINT: $_LATEST_CP"
  if [ -f "$_PROJ/decisions.active.json" ]; then
    echo "--- ACTIVE DECISIONS (recent, scope-relevant) ---"
    ~/.claude/skills/gstack/bin/gstack-decision-search --recent 5 2>/dev/null
    echo "--- END DECISIONS ---"
  fi
  echo "--- END ARTIFACTS ---"
fi

WIP: <concise description of what changed>

[gstack-context]
Decisions: <key choices made this step>
Remaining: <what's left in the logical unit>
Tried: <failed approaches worth recording> (omit if none)
Skill: </skill-name-if-running>
[/gstack-context]

~/.claude/skills/gstack/bin/gstack-question-log '{"skill":"plan-tune","question_id":"<id>","question_summary":"<short>","category":"<approval|clarification|routing|cherry-pick|feedback-loop>","door_type":"<one-way|two-way>","options_count":N,"user_choice":"<key>","recommended":"<key>","session_id":"SESSION_ID"}' 2>/dev/null || true

~/.claude/skills/gstack/bin/gstack-question-preference --write '{"question_id":"<id>","preference":"<pref>","source":"inline-user","free_text":"<optional original words>"}'

~/.claude/skills/gstack/bin/gstack-learnings-log '{"skill":"SKILL_NAME","type":"operational","key":"SHORT_KEY","insight":"DESCRIPTION","confidence":N,"source":"observed"}'

~/.claude/skills/gstack/bin/gstack-skill-end --skill "plan-tune" --outcome OUTCOME \
  --session-id "SESSION_ID" --tel-start "TEL_START" --used-browse USED_BROWSE \
  --error-message "ERROR_MESSAGE" --failed-step "FAILED_STEP" 2>/dev/null || true

~/.claude/skills/gstack/bin/gstack-developer-profile --profile

eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
eval "$(~/.claude/skills/gstack/bin/gstack-paths)"
_LOG="$GSTACK_STATE_ROOT/projects/$SLUG/question-log.jsonl"
if [ ! -f "$_LOG" ]; then
  echo "NO_LOG"
else
  bun -e "
    const lines = require('fs').readFileSync('$_LOG','utf-8').trim().split('\n').filter(Boolean);
    const byId = {};
    for (const l of lines) {
      try {
        const e = JSON.parse(l);
        if (!byId[e.question_id]) byId[e.question_id] = { count:0, skill:e.skill, summary:e.question_summary, followed:0, overridden:0 };
        byId[e.question_id].count++;
        if (e.followed_recommendation === true) byId[e.question_id].followed++;
        else if (e.followed_recommendation === false) byId[e.question_id].overridden++;
      } catch {}
    }
    const rows = Object.entries(byId).map(([id, v]) => ({id, ...v})).sort((a,b) => b.count - a.count);
    for (const r of rows.slice(0, 20)) {
      console.log(\`\${r.count}x  \${r.id}  (\${r.skill})  followed:\${r.followed} overridden:\${r.overridden}\`);
      console.log(\`     \${r.summary}\`);
    }
  "
fi

~/.claude/skills/gstack/bin/gstack-developer-profile --gap

~/.claude/skills/gstack/bin/gstack-question-preference --stats
eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
eval "$(~/.claude/skills/gstack/bin/gstack-paths)"
_LOG="$GSTACK_STATE_ROOT/projects/$SLUG/question-log.jsonl"
if [ -f "$_LOG" ]; then
  bun -e "
    const lines = require('fs').readFileSync('$_LOG','utf-8').trim().split('\n').filter(Boolean);
    const events = [];
    for (const l of lines) { try { events.push(JSON.parse(l)); } catch {} }
    const total = events.length;
    const bySource = {};
    let marked = 0;
    for (const e of events) {
      const src = e.source || 'agent';
      bySource[src] = (bySource[src] || 0) + 1;
      if (e.question_id && !e.question_id.startsWith('hook-')) marked++;
    }
    console.log('TOTAL_LOGGED: ' + total);
    console.log('MARKED: ' + marked + ' (' + (total ? Math.round(100*marked/total) : 0) + '%)');
    for (const s of Object.keys(bySource).sort()) {
      console.log('SOURCE_' + s.toUpperCase().replace(/-/g,'_') + ': ' + bySource[s]);
    }
  "
else
  echo 'TOTAL_LOGGED: 0'
fi
~/.claude/skills/gstack/bin/gstack-developer-profile --profile | bun -e "
  const p = JSON.parse(await Bun.stdin.text());
  const d = p.inferred?.diversity || {};
  console.log('SKILLS_COVERED: ' + (d.skills_covered ?? 0));
  console.log('QUESTIONS_COVERED: ' + (d.question_ids_covered ?? 0));
  console.log('DAYS_SPAN: ' + (d.days_span ?? 0));
  console.log('CALIBRATED: ' + (p.inferred?.sample_size >= 20 && d.skills_covered >= 3 && d.question_ids_covered >= 8 && d.days_span >= 7));
"
echo '---DISTILL---'
~/.claude/skills/gstack/bin/gstack-distill-free-text --status

eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
eval "$(~/.claude/skills/gstack/bin/gstack-paths)"
_LOG="$GSTACK_STATE_ROOT/projects/$SLUG/question-log.jsonl"
[ ! -f "$_LOG" ] && echo 'NO_LOG' || bun -e "
  const lines = require('fs').readFileSync('$_LOG','utf-8').trim().split('\n').filter(Boolean);
  const auto = [];
  for (const l of lines) {
    try { const e = JSON.parse(l); if (e.source === 'auto-decided') auto.push(e); } catch {}
  }
  const recent = auto.slice(-10).reverse();
  if (!recent.length) { console.log('(no auto-decisions yet)'); process.exit(0); }
  for (const r of recent) {
    console.log(r.ts + '  ' + r.question_id + ' → ' + r.user_choice);
    console.log('     ' + (r.question_summary || ''));
  }
"

eval "$(~/.claude/skills/gstack/bin/gstack-slug 2>/dev/null)"
eval "$(~/.claude/skills/gstack/bin/gstack-paths)"
_LOG="$GSTACK_STATE_ROOT/projects/$SLUG/question-log.jsonl"
[ ! -f "$_LOG" ] && echo 'NO_LOG' || bun -e "
  const lines = require('fs').readFileSync('$_LOG','utf-8').trim().split('\n').filter(Boolean);
  const counts = {};
  const summaries = {};
  for (const l of lines) {
    try {
      const e = JSON.parse(l);
      if (e.question_id && e.question_id.startsWith('hook-')) {
        counts[e.question_id] = (counts[e.question_id] || 0) + 1;
        summaries[e.question_id] = e.question_summary || '';
      }
    } catch {}
  }
  const rows = Object.entries(counts).sort((a,b) => b[1] - a[1]).slice(0, 10);
  if (!rows.length) { console.log('(no unmarked questions — coverage is 100%)'); process.exit(0); }
  for (const [id, n] of rows) {
    console.log(n + 'x  ' + id);
    console.log('     ' + summaries[id]);
  }
"

~/.claude/skills/gstack/bin/gstack-distill-free-text --background