feat: bin/gstack-developer-profile — unified profile with migration

bin/gstack-developer-profile supersedes bin/gstack-builder-profile. The old
binary becomes a one-line legacy shim delegating to --read for /office-hours
backward compat.

Subcommands:
  --read              legacy KEY:VALUE output (tier, session_count, etc)
  --migrate           folds ~/.gstack/builder-profile.jsonl into
                      ~/.gstack/developer-profile.json. Atomic (temp + rename),
                      idempotent (no-op when target exists or source absent),
                      archives source as .migrated-YYYY-MM-DD-HHMMSS
  --derive            recomputes inferred dimensions from question-log.jsonl
                      using the signal map in scripts/psychographic-signals.ts
  --profile           full profile JSON
  --gap               declared vs inferred diff JSON
  --trace <dim>       event-level trace of what contributed to a dimension
  --check-mismatch    flags dimensions where declared and inferred disagree by
                      > 0.3 (requires >= 10 events first)
  --vibe              archetype name + description from scripts/archetypes.ts
  --narrative         (v2 stub)

Auto-migration on first read: if legacy file exists and new file doesn't,
migrate before reading. Creates a neutral (all-0.5) stub if nothing exists.

Unified schema (see docs/designs/PLAN_TUNING_V0.md §Architecture):
  {identity, declared, inferred: {values, sample_size, diversity},
   gap, overrides, sessions, signals_accumulated, schema_version}

25 new tests across subcommand behaviors:
- --read defaults + stub creation
- --migrate: 3 sessions preserved with signal tallies, idempotency, archival
- Tier calculation: welcome_back / regular / inner_circle boundaries
- --derive: neutral-when-empty, upward nudge on 'expand', downward on 'reduce',
  recomputable (same input → same output), ad-hoc unregistered ids ignored
- --trace: contributing events, empty for untouched dims, error without arg
- --gap: empty when no declared, correctly computed otherwise
- --vibe: returns archetype name + description
- --check-mismatch: threshold behavior, 10+ sample requirement
- Unknown subcommand errors

25 pass, 0 fail, 60 expect() calls.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bin/gstack-builder-profile

@@ -1,134 +1,13 @@
 #!/usr/bin/env bash
-# gstack-builder-profile — read builder profile and output structured summary
+# gstack-builder-profile — LEGACY SHIM.
 #
-# Reads ~/.gstack/builder-profile.jsonl (append-only session log from /office-hours).
-# Outputs KEY: VALUE pairs for the template to consume. Computes tier, accumulated
-# signals, cross-project detection, nudge eligibility, and resource dedup.
+# Superseded by bin/gstack-developer-profile. This binary now delegates to
+# `gstack-developer-profile --read` to keep /office-hours working during the
+# transition. When all call sites have been updated, this file can be removed.
 #
-# Single source of truth for all closing state. No separate config keys or logs.
-#
-# Exit 0 with defaults if no profile exists (first-time user = introduction tier).
+# The migration from ~/.gstack/builder-profile.jsonl to the unified
+# ~/.gstack/developer-profile.json happens automatically on first read —
+# see bin/gstack-developer-profile --migrate for details.
 set -euo pipefail
-
-GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
-PROFILE_FILE="$GSTACK_HOME/builder-profile.jsonl"
-
-# Graceful default: no profile = introduction tier
-if [ ! -f "$PROFILE_FILE" ] || [ ! -s "$PROFILE_FILE" ]; then
-  echo "SESSION_COUNT: 0"
-  echo "TIER: introduction"
-  echo "LAST_PROJECT:"
-  echo "LAST_ASSIGNMENT:"
-  echo "LAST_DESIGN_TITLE:"
-  echo "DESIGN_COUNT: 0"
-  echo "DESIGN_TITLES: []"
-  echo "ACCUMULATED_SIGNALS:"
-  echo "TOTAL_SIGNAL_COUNT: 0"
-  echo "CROSS_PROJECT: false"
-  echo "NUDGE_ELIGIBLE: false"
-  echo "RESOURCES_SHOWN:"
-  echo "RESOURCES_SHOWN_COUNT: 0"
-  echo "TOPICS:"
-  exit 0
-fi
-
-# Use bun for JSON parsing (same pattern as gstack-learnings-search).
-# Fallback to defaults if bun is unavailable.
-cat "$PROFILE_FILE" 2>/dev/null | bun -e "
-const lines = (await Bun.stdin.text()).trim().split('\n').filter(Boolean);
-const entries = [];
-for (const line of lines) {
-  try { entries.push(JSON.parse(line)); } catch {}
-}
-
-const count = entries.length;
-
-// Tier computation
-let tier = 'introduction';
-if (count >= 8) tier = 'inner_circle';
-else if (count >= 4) tier = 'regular';
-else if (count >= 1) tier = 'welcome_back';
-
-// Last session data
-const last = entries[count - 1] || {};
-const prev = entries[count - 2] || {};
-const crossProject = prev.project_slug && last.project_slug
-  ? prev.project_slug !== last.project_slug
-  : false;
-
-// Design docs
-const designs = entries
-  .map(e => e.design_doc || '')
-  .filter(Boolean);
-const designTitles = entries
-  .map(e => {
-    const doc = e.design_doc || '';
-    // Extract title from path: ...-design-DATETIME.md -> use the entry's topic or project
-    return doc ? (e.project_slug || 'unknown') : '';
-  })
-  .filter(Boolean);
-
-// Accumulated signals
-const signalCounts = {};
-let totalSignals = 0;
-for (const e of entries) {
-  for (const s of (e.signals || [])) {
-    signalCounts[s] = (signalCounts[s] || 0) + 1;
-    totalSignals++;
-  }
-}
-const signalStr = Object.entries(signalCounts)
-  .map(([k, v]) => k + ':' + v)
-  .join(',');
-
-// Nudge eligibility: builder-mode + 5+ signals across 3+ sessions
-const builderSessions = entries.filter(e => e.mode !== 'startup').length;
-const nudgeEligible = builderSessions >= 3 && totalSignals >= 5;
-
-// Resources shown (aggregate all)
-const allResources = new Set();
-for (const e of entries) {
-  for (const url of (e.resources_shown || [])) {
-    allResources.add(url);
-  }
-}
-
-// Topics (aggregate all)
-const allTopics = new Set();
-for (const e of entries) {
-  for (const t of (e.topics || [])) {
-    allTopics.add(t);
-  }
-}
-
-console.log('SESSION_COUNT: ' + count);
-console.log('TIER: ' + tier);
-console.log('LAST_PROJECT: ' + (last.project_slug || ''));
-console.log('LAST_ASSIGNMENT: ' + (last.assignment || ''));
-console.log('LAST_DESIGN_TITLE: ' + (last.design_doc || ''));
-console.log('DESIGN_COUNT: ' + designs.length);
-console.log('DESIGN_TITLES: ' + JSON.stringify(designTitles));
-console.log('ACCUMULATED_SIGNALS: ' + signalStr);
-console.log('TOTAL_SIGNAL_COUNT: ' + totalSignals);
-console.log('CROSS_PROJECT: ' + crossProject);
-console.log('NUDGE_ELIGIBLE: ' + nudgeEligible);
-console.log('RESOURCES_SHOWN: ' + Array.from(allResources).join(','));
-console.log('RESOURCES_SHOWN_COUNT: ' + allResources.size);
-console.log('TOPICS: ' + Array.from(allTopics).join(','));
-" 2>/dev/null || {
-  # Fallback if bun is unavailable
-  echo "SESSION_COUNT: 0"
-  echo "TIER: introduction"
-  echo "LAST_PROJECT:"
-  echo "LAST_ASSIGNMENT:"
-  echo "LAST_DESIGN_TITLE:"
-  echo "DESIGN_COUNT: 0"
-  echo "DESIGN_TITLES: []"
-  echo "ACCUMULATED_SIGNALS:"
-  echo "TOTAL_SIGNAL_COUNT: 0"
-  echo "CROSS_PROJECT: false"
-  echo "NUDGE_ELIGIBLE: false"
-  echo "RESOURCES_SHOWN:"
-  echo "RESOURCES_SHOWN_COUNT: 0"
-  echo "TOPICS:"
-}
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+exec "$SCRIPT_DIR/gstack-developer-profile" --read "$@"

bin/gstack-developer-profile

@@ -0,0 +1,446 @@
+#!/usr/bin/env bash
+# gstack-developer-profile — unified developer profile access and derivation.
+#
+# Supersedes bin/gstack-builder-profile. The old binary remains as a legacy
+# shim that delegates to `gstack-developer-profile --read`.
+#
+# Subcommands:
+#   --read              (default)  emit KEY: VALUE pairs in builder-profile format
+#                                  for /office-hours compatibility.
+#   --derive            recompute inferred dimensions from question events;
+#                       write updated ~/.gstack/developer-profile.json.
+#   --profile           emit the full profile as JSON (all fields).
+#   --gap               emit declared-vs-inferred gap as JSON.
+#   --trace <dim>       show events that contributed to a dimension.
+#   --narrative         (v2 stub) output a coach bio paragraph.
+#   --vibe              (v2 stub) output the one-word archetype.
+#   --check-mismatch    detect meaningful gaps between declared and observed.
+#   --migrate           migrate builder-profile.jsonl → developer-profile.json.
+#                       Idempotent; archives the source file on success.
+#
+# Profile file: ~/.gstack/developer-profile.json (unified schema — see
+# docs/designs/PLAN_TUNING_V0.md). Event file: ~/.gstack/projects/{SLUG}/
+# question-events.jsonl.
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
+PROFILE_FILE="$GSTACK_HOME/developer-profile.json"
+LEGACY_FILE="$GSTACK_HOME/builder-profile.jsonl"
+eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null || true)"
+SLUG="${SLUG:-unknown}"
+
+CMD="${1:---read}"
+shift || true
+
+# -----------------------------------------------------------------------
+# Migration: builder-profile.jsonl → developer-profile.json
+# -----------------------------------------------------------------------
+do_migrate() {
+  if [ ! -f "$LEGACY_FILE" ]; then
+    echo "MIGRATE: no legacy file to migrate"
+    return 0
+  fi
+
+  if [ -f "$PROFILE_FILE" ]; then
+    # Already migrated — no-op (idempotent).
+    echo "MIGRATE: already migrated (developer-profile.json exists)"
+    return 0
+  fi
+
+  # Run migration in a temp file, then atomic rename.
+  local TMPOUT
+  TMPOUT=$(mktemp "$GSTACK_HOME/developer-profile.json.XXXXXX.tmp")
+  trap 'rm -f "$TMPOUT"' EXIT
+
+  cat "$LEGACY_FILE" | bun -e "
+    const lines = (await Bun.stdin.text()).trim().split('\n').filter(Boolean);
+    const sessions = [];
+    const signalsAcc = {};
+    const resources = new Set();
+    const topics = new Set();
+    for (const line of lines) {
+      try {
+        const e = JSON.parse(line);
+        sessions.push(e);
+        for (const s of (e.signals || [])) {
+          signalsAcc[s] = (signalsAcc[s] || 0) + 1;
+        }
+        for (const r of (e.resources_shown || [])) resources.add(r);
+        for (const t of (e.topics || [])) topics.add(t);
+      } catch {}
+    }
+    const profile = {
+      identity: {},
+      declared: {},
+      inferred: {
+        values: {
+          scope_appetite: 0.5,
+          risk_tolerance: 0.5,
+          detail_preference: 0.5,
+          autonomy: 0.5,
+          architecture_care: 0.5,
+        },
+        sample_size: 0,
+        diversity: { skills_covered: 0, question_ids_covered: 0, days_span: 0 },
+      },
+      gap: {},
+      overrides: {},
+      sessions,
+      signals_accumulated: signalsAcc,
+      resources_shown: Array.from(resources),
+      topics: Array.from(topics),
+      migrated_at: new Date().toISOString(),
+      schema_version: 1,
+    };
+    console.log(JSON.stringify(profile, null, 2));
+  " > "$TMPOUT"
+
+  # Atomic rename.
+  mv "$TMPOUT" "$PROFILE_FILE"
+  trap - EXIT
+
+  # Archive the legacy file.
+  local TS
+  TS="$(date +%Y-%m-%d-%H%M%S)"
+  mv "$LEGACY_FILE" "$LEGACY_FILE.migrated-$TS"
+
+  local COUNT
+  COUNT=$(bun -e "console.log(JSON.parse(require('fs').readFileSync('$PROFILE_FILE','utf-8')).sessions.length)" 2>/dev/null || echo "?")
+  echo "MIGRATE: ok — migrated $COUNT sessions from builder-profile.jsonl"
+}
+
+# -----------------------------------------------------------------------
+# Load-or-migrate helper: ensure developer-profile.json exists.
+# Auto-migrates from builder-profile.jsonl if present.
+# Returns path to profile file via stdout. Creates a minimal stub if nothing exists.
+# -----------------------------------------------------------------------
+ensure_profile() {
+  if [ -f "$PROFILE_FILE" ]; then
+    return 0
+  fi
+  if [ -f "$LEGACY_FILE" ]; then
+    do_migrate >/dev/null
+    return 0
+  fi
+  # Nothing yet — create a stub.
+  mkdir -p "$GSTACK_HOME"
+  cat > "$PROFILE_FILE" <<EOF
+{
+  "identity": {},
+  "declared": {},
+  "inferred": {
+    "values": {
+      "scope_appetite": 0.5,
+      "risk_tolerance": 0.5,
+      "detail_preference": 0.5,
+      "autonomy": 0.5,
+      "architecture_care": 0.5
+    },
+    "sample_size": 0,
+    "diversity": { "skills_covered": 0, "question_ids_covered": 0, "days_span": 0 }
+  },
+  "gap": {},
+  "overrides": {},
+  "sessions": [],
+  "signals_accumulated": {},
+  "schema_version": 1
+}
+EOF
+}
+
+# -----------------------------------------------------------------------
+# Read: emit legacy KEY: VALUE output for /office-hours compat.
+# -----------------------------------------------------------------------
+do_read() {
+  ensure_profile
+  cat "$PROFILE_FILE" | bun -e "
+    const p = JSON.parse(await Bun.stdin.text());
+    const sessions = p.sessions || [];
+    const count = sessions.length;
+    let tier = 'introduction';
+    if (count >= 8) tier = 'inner_circle';
+    else if (count >= 4) tier = 'regular';
+    else if (count >= 1) tier = 'welcome_back';
+
+    const last = sessions[count - 1] || {};
+    const prev = sessions[count - 2] || {};
+    const crossProject = prev.project_slug && last.project_slug
+      ? prev.project_slug !== last.project_slug
+      : false;
+
+    const designs = sessions.map(e => e.design_doc || '').filter(Boolean);
+    const designTitles = sessions
+      .map(e => (e.design_doc ? (e.project_slug || 'unknown') : ''))
+      .filter(Boolean);
+
+    const signalCounts = p.signals_accumulated || {};
+    let totalSignals = 0;
+    for (const v of Object.values(signalCounts)) totalSignals += v;
+    const signalStr = Object.entries(signalCounts).map(([k,v]) => k + ':' + v).join(',');
+
+    const builderSessions = sessions.filter(e => e.mode !== 'startup').length;
+    const nudgeEligible = builderSessions >= 3 && totalSignals >= 5;
+
+    const resources = p.resources_shown || [];
+    const topics = p.topics || [];
+
+    console.log('SESSION_COUNT: ' + count);
+    console.log('TIER: ' + tier);
+    console.log('LAST_PROJECT: ' + (last.project_slug || ''));
+    console.log('LAST_ASSIGNMENT: ' + (last.assignment || ''));
+    console.log('LAST_DESIGN_TITLE: ' + (last.design_doc || ''));
+    console.log('DESIGN_COUNT: ' + designs.length);
+    console.log('DESIGN_TITLES: ' + JSON.stringify(designTitles));
+    console.log('ACCUMULATED_SIGNALS: ' + signalStr);
+    console.log('TOTAL_SIGNAL_COUNT: ' + totalSignals);
+    console.log('CROSS_PROJECT: ' + crossProject);
+    console.log('NUDGE_ELIGIBLE: ' + nudgeEligible);
+    console.log('RESOURCES_SHOWN: ' + resources.join(','));
+    console.log('RESOURCES_SHOWN_COUNT: ' + resources.length);
+    console.log('TOPICS: ' + topics.join(','));
+  "
+}
+
+# -----------------------------------------------------------------------
+# Profile: emit the full JSON
+# -----------------------------------------------------------------------
+do_profile() {
+  ensure_profile
+  cat "$PROFILE_FILE"
+}
+
+# -----------------------------------------------------------------------
+# Gap: declared vs inferred diff
+# -----------------------------------------------------------------------
+do_gap() {
+  ensure_profile
+  cat "$PROFILE_FILE" | bun -e "
+    const p = JSON.parse(await Bun.stdin.text());
+    const declared = p.declared || {};
+    const inferred = (p.inferred && p.inferred.values) || {};
+    const dims = ['scope_appetite','risk_tolerance','detail_preference','autonomy','architecture_care'];
+    const gap = {};
+    for (const d of dims) {
+      if (declared[d] !== undefined && inferred[d] !== undefined) {
+        gap[d] = +(Math.abs(declared[d] - inferred[d])).toFixed(3);
+      }
+    }
+    console.log(JSON.stringify({ declared, inferred, gap }, null, 2));
+  "
+}
+
+# -----------------------------------------------------------------------
+# Derive: recompute inferred dimensions from question-events.jsonl
+# -----------------------------------------------------------------------
+do_derive() {
+  ensure_profile
+  local EVENTS="$GSTACK_HOME/projects/$SLUG/question-log.jsonl"
+  local REGISTRY="$ROOT_DIR/scripts/question-registry.ts"
+  local SIGNALS="$ROOT_DIR/scripts/psychographic-signals.ts"
+  if [ ! -f "$REGISTRY" ] || [ ! -f "$SIGNALS" ]; then
+    echo "DERIVE: registry or signals file missing, cannot derive" >&2
+    exit 1
+  fi
+
+  cd "$ROOT_DIR"
+  PROFILE_FILE_PATH="$PROFILE_FILE" EVENTS_PATH="$EVENTS" bun -e "
+    import('./scripts/question-registry.ts').then(async (regmod) => {
+      const sigmod = await import('./scripts/psychographic-signals.ts');
+      const fs = require('fs');
+      const { QUESTIONS } = regmod;
+      const { SIGNAL_MAP, applySignal, newDimensionTotals, normalizeToDimensionValue } = sigmod;
+
+      const profilePath = process.env.PROFILE_FILE_PATH;
+      const eventsPath = process.env.EVENTS_PATH;
+      const profile = JSON.parse(fs.readFileSync(profilePath, 'utf-8'));
+
+      let lines = [];
+      if (fs.existsSync(eventsPath)) {
+        lines = fs.readFileSync(eventsPath, 'utf-8').trim().split('\n').filter(Boolean);
+      }
+
+      const totals = newDimensionTotals();
+      const skills = new Set();
+      const qids = new Set();
+      const days = new Set();
+      let count = 0;
+      for (const line of lines) {
+        let e;
+        try { e = JSON.parse(line); } catch { continue; }
+        if (!e.question_id || !e.user_choice) continue;
+        count++;
+        skills.add(e.skill);
+        qids.add(e.question_id);
+        if (e.ts) days.add(String(e.ts).slice(0,10));
+        const def = QUESTIONS[e.question_id];
+        if (def && def.signal_key) {
+          applySignal(totals, def.signal_key, e.user_choice);
+        }
+      }
+
+      const values = {};
+      for (const [dim, total] of Object.entries(totals)) {
+        values[dim] = +normalizeToDimensionValue(total).toFixed(3);
+      }
+
+      profile.inferred = {
+        values,
+        sample_size: count,
+        diversity: {
+          skills_covered: skills.size,
+          question_ids_covered: qids.size,
+          days_span: days.size,
+        },
+      };
+
+      // Recompute gap.
+      const gap = {};
+      for (const d of Object.keys(values)) {
+        if (profile.declared && profile.declared[d] !== undefined) {
+          gap[d] = +(Math.abs(profile.declared[d] - values[d])).toFixed(3);
+        }
+      }
+      profile.gap = gap;
+      profile.derived_at = new Date().toISOString();
+
+      const tmp = profilePath + '.tmp';
+      fs.writeFileSync(tmp, JSON.stringify(profile, null, 2));
+      fs.renameSync(tmp, profilePath);
+      console.log('DERIVE: ok — ' + count + ' events, ' + skills.size + ' skills, ' + qids.size + ' questions');
+    }).catch(err => { console.error('DERIVE:', err.message); process.exit(1); });
+  "
+}
+
+# -----------------------------------------------------------------------
+# Trace: show events contributing to a dimension
+# -----------------------------------------------------------------------
+do_trace() {
+  local DIM="${1:-}"
+  if [ -z "$DIM" ]; then
+    echo "TRACE: missing dimension argument" >&2
+    exit 1
+  fi
+  local EVENTS="$GSTACK_HOME/projects/$SLUG/question-log.jsonl"
+  if [ ! -f "$EVENTS" ]; then
+    echo "TRACE: no events for this project"
+    return 0
+  fi
+  cd "$ROOT_DIR"
+  EVENTS_PATH="$EVENTS" TRACE_DIM="$DIM" bun -e "
+    import('./scripts/question-registry.ts').then(async (regmod) => {
+      const sigmod = await import('./scripts/psychographic-signals.ts');
+      const fs = require('fs');
+      const { QUESTIONS } = regmod;
+      const { SIGNAL_MAP } = sigmod;
+      const target = process.env.TRACE_DIM;
+      const lines = fs.readFileSync(process.env.EVENTS_PATH, 'utf-8').trim().split('\n').filter(Boolean);
+      const rows = [];
+      for (const line of lines) {
+        let e;
+        try { e = JSON.parse(line); } catch { continue; }
+        const def = QUESTIONS[e.question_id];
+        if (!def || !def.signal_key) continue;
+        const deltas = SIGNAL_MAP[def.signal_key]?.[e.user_choice] || [];
+        for (const d of deltas) {
+          if (d.dim === target) {
+            rows.push({ ts: e.ts, question_id: e.question_id, choice: e.user_choice, delta: d.delta });
+          }
+        }
+      }
+      if (rows.length === 0) {
+        console.log('TRACE: no events contribute to ' + target);
+      } else {
+        console.log('TRACE: ' + rows.length + ' events for ' + target);
+        for (const r of rows) {
+          console.log('  ' + (r.ts || '').slice(0,19) + '  ' + r.question_id + '  → ' + r.choice + '  (' + (r.delta > 0 ? '+' : '') + r.delta + ')');
+        }
+      }
+    });
+  "
+}
+
+# -----------------------------------------------------------------------
+# Check mismatch: flag when declared ≠ inferred by > threshold
+# -----------------------------------------------------------------------
+do_check_mismatch() {
+  ensure_profile
+  cat "$PROFILE_FILE" | bun -e "
+    const p = JSON.parse(await Bun.stdin.text());
+    const declared = p.declared || {};
+    const inferred = (p.inferred && p.inferred.values) || {};
+    const sampleSize = (p.inferred && p.inferred.sample_size) || 0;
+    const diversity = (p.inferred && p.inferred.diversity) || {};
+
+    // Require enough data before reporting mismatch.
+    if (sampleSize < 10) {
+      console.log('MISMATCH: not enough data (' + sampleSize + ' events; need 10+)');
+      process.exit(0);
+    }
+
+    const THRESHOLD = 0.3;
+    const flagged = [];
+    for (const d of Object.keys(declared)) {
+      if (inferred[d] === undefined) continue;
+      const gap = Math.abs(declared[d] - inferred[d]);
+      if (gap > THRESHOLD) {
+        flagged.push({ dim: d, declared: declared[d], inferred: inferred[d], gap: +gap.toFixed(3) });
+      }
+    }
+
+    if (flagged.length === 0) {
+      console.log('MISMATCH: none');
+    } else {
+      console.log('MISMATCH: ' + flagged.length + ' dimension(s) disagree (gap > ' + THRESHOLD + ')');
+      for (const f of flagged) {
+        console.log('  ' + f.dim + ': declared ' + f.declared + ' vs inferred ' + f.inferred + ' (gap ' + f.gap + ')');
+      }
+    }
+  "
+}
+
+# -----------------------------------------------------------------------
+# Narrative + Vibe (v2 stubs)
+# -----------------------------------------------------------------------
+do_narrative() {
+  echo "NARRATIVE: (v2 — not yet implemented; use /plan-tune profile for now)"
+}
+
+do_vibe() {
+  ensure_profile
+  cd "$ROOT_DIR"
+  cat "$PROFILE_FILE" | PROFILE_DATA="$(cat "$PROFILE_FILE")" bun -e "
+    import('./scripts/archetypes.ts').then(async (mod) => {
+      const p = JSON.parse(process.env.PROFILE_DATA);
+      const dims = (p.inferred && p.inferred.values) || {
+        scope_appetite: 0.5, risk_tolerance: 0.5, detail_preference: 0.5,
+        autonomy: 0.5, architecture_care: 0.5,
+      };
+      const arch = mod.matchArchetype(dims);
+      console.log(arch.name);
+      console.log(arch.description);
+    });
+  "
+}
+
+# -----------------------------------------------------------------------
+# Dispatch
+# -----------------------------------------------------------------------
+case "$CMD" in
+  --read) do_read ;;
+  --profile) do_profile ;;
+  --gap) do_gap ;;
+  --derive) do_derive ;;
+  --trace) do_trace "$@" ;;
+  --narrative) do_narrative ;;
+  --vibe) do_vibe ;;
+  --check-mismatch) do_check_mismatch ;;
+  --migrate) do_migrate ;;
+  --help|-h) sed -n '1,/^set -euo/p' "$0" | sed 's|^# \?||' ;;
+  *)
+    echo "gstack-developer-profile: unknown subcommand '$CMD'" >&2
+    echo "run --help for usage" >&2
+    exit 1
+    ;;
+esac

test/gstack-developer-profile.test.ts

@@ -0,0 +1,441 @@
+/**
+ * bin/gstack-developer-profile — subcommand behavior tests.
+ *
+ * Covers:
+ * - --read (legacy /office-hours KEY: VALUE format, with defaults when no profile)
+ * - --migrate (idempotent; preserves sessions + signals_accumulated)
+ * - --derive (recomputes inferred from question-log events)
+ * - --trace <dim> (shows contributing events)
+ * - --gap (declared vs inferred)
+ * - --vibe (archetype match from inferred)
+ * - --check-mismatch (threshold behavior; requires 10+ samples)
+ */
+
+import { describe, test, expect, beforeEach, afterEach } from 'bun:test';
+import * as fs from 'fs';
+import * as path from 'path';
+import * as os from 'os';
+import { spawnSync } from 'child_process';
+
+const ROOT = path.resolve(import.meta.dir, '..');
+const BIN_DEV = path.join(ROOT, 'bin', 'gstack-developer-profile');
+const BIN_LOG = path.join(ROOT, 'bin', 'gstack-question-log');
+
+let tmpHome: string;
+
+beforeEach(() => {
+  tmpHome = fs.mkdtempSync(path.join(os.tmpdir(), 'gstack-test-'));
+});
+
+afterEach(() => {
+  fs.rmSync(tmpHome, { recursive: true, force: true });
+});
+
+function runDev(...args: string[]): { stdout: string; stderr: string; status: number } {
+  const res = spawnSync(BIN_DEV, args, {
+    env: { ...process.env, GSTACK_HOME: tmpHome },
+    encoding: 'utf-8',
+    cwd: ROOT,
+  });
+  return {
+    stdout: res.stdout ?? '',
+    stderr: res.stderr ?? '',
+    status: res.status ?? -1,
+  };
+}
+
+function logQuestion(payload: Record<string, unknown>): number {
+  const res = spawnSync(BIN_LOG, [JSON.stringify(payload)], {
+    env: { ...process.env, GSTACK_HOME: tmpHome },
+    encoding: 'utf-8',
+    cwd: ROOT,
+  });
+  return res.status ?? -1;
+}
+
+function writeLegacyProfile(sessions: Array<Record<string, unknown>>) {
+  const content = sessions.map((s) => JSON.stringify(s)).join('\n') + '\n';
+  fs.writeFileSync(path.join(tmpHome, 'builder-profile.jsonl'), content);
+}
+
+function readProfile(): Record<string, unknown> {
+  const file = path.join(tmpHome, 'developer-profile.json');
+  return JSON.parse(fs.readFileSync(file, 'utf-8'));
+}
+
+// -----------------------------------------------------------------------
+// --read (defaults + compat)
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --read', () => {
+  test('emits defaults when no profile exists (creates stub)', () => {
+    const r = runDev('--read');
+    expect(r.status).toBe(0);
+    expect(r.stdout).toContain('SESSION_COUNT: 0');
+    expect(r.stdout).toContain('TIER: introduction');
+    expect(r.stdout).toContain('CROSS_PROJECT: false');
+  });
+
+  test('creates a stub profile file when missing', () => {
+    runDev('--read');
+    const file = path.join(tmpHome, 'developer-profile.json');
+    expect(fs.existsSync(file)).toBe(true);
+    const p = readProfile();
+    expect(p.schema_version).toBe(1);
+  });
+
+  test('omits --read flag and still returns default output', () => {
+    const r = runDev();
+    expect(r.status).toBe(0);
+    expect(r.stdout).toContain('TIER:');
+  });
+});
+
+// -----------------------------------------------------------------------
+// --migrate (legacy jsonl → unified profile)
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --migrate', () => {
+  test('migrates 3 sessions with signals, resources, topics', () => {
+    writeLegacyProfile([
+      {
+        date: '2026-03-01',
+        mode: 'builder',
+        project_slug: 'alpha',
+        signals: ['taste', 'agency'],
+        resources_shown: ['https://a.example'],
+        topics: ['onboarding'],
+        design_doc: '/tmp/a.md',
+        assignment: 'watch 3 users',
+      },
+      {
+        date: '2026-03-10',
+        mode: 'startup',
+        project_slug: 'beta',
+        signals: ['named_users', 'pushback', 'taste'],
+        resources_shown: ['https://b.example'],
+        topics: ['fit'],
+        design_doc: '/tmp/b.md',
+        assignment: 'interview 5',
+      },
+      {
+        date: '2026-04-01',
+        mode: 'builder',
+        project_slug: 'alpha',
+        signals: ['agency'],
+        resources_shown: [],
+        topics: ['iter'],
+        design_doc: '/tmp/c.md',
+        assignment: 'ship v1',
+      },
+    ]);
+
+    const r = runDev('--migrate');
+    expect(r.status).toBe(0);
+    expect(r.stdout).toContain('migrated 3 sessions');
+
+    const p = readProfile() as {
+      sessions: Array<{ project_slug: string; signals: string[] }>;
+      signals_accumulated: Record<string, number>;
+      resources_shown: string[];
+      topics: string[];
+    };
+
+    expect(p.sessions.length).toBe(3);
+    // Accumulated signals are correctly tallied
+    expect(p.signals_accumulated.taste).toBe(2);
+    expect(p.signals_accumulated.agency).toBe(2);
+    expect(p.signals_accumulated.named_users).toBe(1);
+    expect(p.signals_accumulated.pushback).toBe(1);
+    expect(p.resources_shown.length).toBe(2);
+    expect(p.topics.length).toBe(3);
+  });
+
+  test('idempotent — second migrate is no-op when profile exists', () => {
+    writeLegacyProfile([{ date: '2026-03-01', mode: 'builder', project_slug: 'x', signals: ['taste'] }]);
+    runDev('--migrate');
+    const p1 = readProfile();
+    const r2 = runDev('--migrate');
+    expect(r2.stdout).toMatch(/no legacy file|already migrated/);
+    const p2 = readProfile();
+    // Sessions count should be identical — migration didn't duplicate
+    expect((p1 as any).sessions.length).toBe((p2 as any).sessions.length);
+  });
+
+  test('archives legacy file after successful migration', () => {
+    writeLegacyProfile([{ date: '2026-03-01', mode: 'builder', project_slug: 'x', signals: [] }]);
+    runDev('--migrate');
+    // Legacy file should be renamed to *.migrated-<timestamp>
+    const files = fs.readdirSync(tmpHome);
+    const archived = files.filter((f) => f.startsWith('builder-profile.jsonl.migrated-'));
+    expect(archived.length).toBe(1);
+    // Original name should no longer exist
+    expect(fs.existsSync(path.join(tmpHome, 'builder-profile.jsonl'))).toBe(false);
+  });
+
+  test('no-op when no legacy file exists', () => {
+    const r = runDev('--migrate');
+    expect(r.status).toBe(0);
+    expect(r.stdout).toContain('no legacy file');
+  });
+});
+
+// -----------------------------------------------------------------------
+// --read tier calculation
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile tier calculation', () => {
+  test('1-3 sessions → welcome_back', () => {
+    writeLegacyProfile([
+      { date: 'x', mode: 'builder', project_slug: 'a', signals: [] },
+      { date: 'x', mode: 'builder', project_slug: 'a', signals: [] },
+      { date: 'x', mode: 'builder', project_slug: 'a', signals: [] },
+    ]);
+    runDev('--migrate');
+    const r = runDev('--read');
+    expect(r.stdout).toContain('TIER: welcome_back');
+  });
+
+  test('4-7 sessions → regular', () => {
+    const sessions = Array.from({ length: 5 }, () => ({
+      date: 'x',
+      mode: 'builder',
+      project_slug: 'a',
+      signals: [],
+    }));
+    writeLegacyProfile(sessions);
+    runDev('--migrate');
+    const r = runDev('--read');
+    expect(r.stdout).toContain('TIER: regular');
+  });
+
+  test('8+ sessions → inner_circle', () => {
+    const sessions = Array.from({ length: 9 }, () => ({
+      date: 'x',
+      mode: 'builder',
+      project_slug: 'a',
+      signals: [],
+    }));
+    writeLegacyProfile(sessions);
+    runDev('--migrate');
+    const r = runDev('--read');
+    expect(r.stdout).toContain('TIER: inner_circle');
+  });
+});
+
+// -----------------------------------------------------------------------
+// --derive: inferred dimensions from question-log events
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --derive', () => {
+  test('derive with no events yields neutral (0.5) dimensions', () => {
+    runDev('--derive');
+    const p = readProfile() as {
+      inferred: { values: Record<string, number>; sample_size: number };
+    };
+    expect(p.inferred.sample_size).toBe(0);
+    expect(p.inferred.values.scope_appetite).toBeCloseTo(0.5, 2);
+  });
+
+  test('derive nudges scope_appetite upward after expand choices', () => {
+    for (let i = 0; i < 5; i++) {
+      expect(
+        logQuestion({
+          skill: 'plan-ceo-review',
+          question_id: 'plan-ceo-review-mode',
+          question_summary: 'mode?',
+          user_choice: 'expand',
+          session_id: `s${i}`,
+          ts: `2026-04-0${i + 1}T10:00:00Z`,
+        }),
+      ).toBe(0);
+    }
+    runDev('--derive');
+    const p = readProfile() as {
+      inferred: { values: Record<string, number>; sample_size: number; diversity: Record<string, number> };
+    };
+    expect(p.inferred.sample_size).toBe(5);
+    expect(p.inferred.values.scope_appetite).toBeGreaterThan(0.5);
+    expect(p.inferred.diversity.question_ids_covered).toBe(1);
+    expect(p.inferred.diversity.skills_covered).toBe(1);
+  });
+
+  test('derive nudges scope_appetite downward after reduce choices', () => {
+    for (let i = 0; i < 3; i++) {
+      logQuestion({
+        skill: 'plan-ceo-review',
+        question_id: 'plan-ceo-review-mode',
+        question_summary: 'mode?',
+        user_choice: 'reduce',
+        session_id: `s${i}`,
+      });
+    }
+    runDev('--derive');
+    const p = readProfile() as { inferred: { values: Record<string, number> } };
+    expect(p.inferred.values.scope_appetite).toBeLessThan(0.5);
+  });
+
+  test('derive is recomputable — same input, same output', () => {
+    for (let i = 0; i < 3; i++) {
+      logQuestion({
+        skill: 'plan-ceo-review',
+        question_id: 'plan-ceo-review-mode',
+        question_summary: 'mode?',
+        user_choice: 'expand',
+        session_id: `s${i}`,
+      });
+    }
+    runDev('--derive');
+    const v1 = (readProfile() as any).inferred.values;
+    runDev('--derive');
+    const v2 = (readProfile() as any).inferred.values;
+    expect(v1).toEqual(v2);
+  });
+
+  test('derive ignores events for questions not in registry (ad-hoc ids)', () => {
+    logQuestion({
+      skill: 'plan-ceo-review',
+      question_id: 'adhoc-unregistered-question',
+      question_summary: 'mystery',
+      user_choice: 'anything',
+      session_id: 's1',
+    });
+    runDev('--derive');
+    const p = readProfile() as { inferred: { values: Record<string, number>; sample_size: number } };
+    // Sample size counts the log entry, but no signal delta applied
+    expect(p.inferred.sample_size).toBe(1);
+    expect(p.inferred.values.scope_appetite).toBeCloseTo(0.5, 2);
+  });
+});
+
+// -----------------------------------------------------------------------
+// --trace
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --trace <dim>', () => {
+  test('shows contributing events with delta values', () => {
+    for (let i = 0; i < 3; i++) {
+      logQuestion({
+        skill: 'plan-ceo-review',
+        question_id: 'plan-ceo-review-mode',
+        question_summary: 'mode?',
+        user_choice: 'expand',
+        session_id: `s${i}`,
+      });
+    }
+    const r = runDev('--trace', 'scope_appetite');
+    expect(r.stdout).toContain('3 events for scope_appetite');
+    expect(r.stdout).toContain('plan-ceo-review-mode');
+    expect(r.stdout).toContain('expand');
+  });
+
+  test('reports no contributions for untouched dimension', () => {
+    logQuestion({
+      skill: 'plan-ceo-review',
+      question_id: 'plan-ceo-review-mode',
+      question_summary: 'x',
+      user_choice: 'expand',
+      session_id: 's1',
+    });
+    const r = runDev('--trace', 'autonomy');
+    expect(r.stdout).toContain('no events contribute to autonomy');
+  });
+
+  test('errors without dimension argument', () => {
+    const r = runDev('--trace');
+    expect(r.status).not.toBe(0);
+    expect(r.stderr).toContain('missing dimension');
+  });
+});
+
+// -----------------------------------------------------------------------
+// --gap
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --gap', () => {
+  test('gap is empty when nothing is declared', () => {
+    runDev('--read');
+    const r = runDev('--gap');
+    expect(r.status).toBe(0);
+    const out = JSON.parse(r.stdout);
+    expect(out.gap).toEqual({});
+  });
+
+  test('gap computed when declared and inferred both present', () => {
+    runDev('--read');
+    const file = path.join(tmpHome, 'developer-profile.json');
+    const p = readProfile() as any;
+    p.declared = { scope_appetite: 0.8 };
+    p.inferred.values.scope_appetite = 0.55;
+    fs.writeFileSync(file, JSON.stringify(p));
+    const r = runDev('--gap');
+    const out = JSON.parse(r.stdout);
+    expect(out.gap.scope_appetite).toBeCloseTo(0.25, 2);
+  });
+});
+
+// -----------------------------------------------------------------------
+// --vibe (archetype match)
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --vibe', () => {
+  test('returns archetype name and description', () => {
+    runDev('--read');
+    const r = runDev('--vibe');
+    expect(r.status).toBe(0);
+    const lines = r.stdout.trim().split('\n');
+    expect(lines.length).toBeGreaterThanOrEqual(1);
+    // Default profile (all 0.5) is closest to Builder-Coach or Polymath
+    expect(lines[0].length).toBeGreaterThan(0);
+  });
+});
+
+// -----------------------------------------------------------------------
+// --check-mismatch
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile --check-mismatch', () => {
+  test('reports insufficient data when < 10 events', () => {
+    runDev('--read');
+    const r = runDev('--check-mismatch');
+    expect(r.stdout).toContain('not enough data');
+  });
+
+  test('reports no mismatch when declared tracks inferred closely', () => {
+    runDev('--read');
+    const file = path.join(tmpHome, 'developer-profile.json');
+    const p = readProfile() as any;
+    p.declared = { scope_appetite: 0.5, architecture_care: 0.5 };
+    p.inferred.sample_size = 20;
+    fs.writeFileSync(file, JSON.stringify(p));
+    const r = runDev('--check-mismatch');
+    expect(r.stdout).toContain('MISMATCH: none');
+  });
+
+  test('flags dimensions with gap > 0.3 when enough data', () => {
+    runDev('--read');
+    const file = path.join(tmpHome, 'developer-profile.json');
+    const p = readProfile() as any;
+    p.declared = { scope_appetite: 0.9, autonomy: 0.2 };
+    p.inferred.values.scope_appetite = 0.4;
+    p.inferred.values.autonomy = 0.8;
+    p.inferred.sample_size = 25;
+    fs.writeFileSync(file, JSON.stringify(p));
+    const r = runDev('--check-mismatch');
+    expect(r.stdout).toContain('2 dimension(s) disagree');
+    expect(r.stdout).toContain('scope_appetite');
+    expect(r.stdout).toContain('autonomy');
+  });
+});
+
+// -----------------------------------------------------------------------
+// Error handling
+// -----------------------------------------------------------------------
+
+describe('gstack-developer-profile errors', () => {
+  test('unknown subcommand exits non-zero', () => {
+    const r = runDev('--not-a-real-subcommand');
+    expect(r.status).not.toBe(0);
+    expect(r.stderr).toContain('unknown subcommand');
+  });
+});