diff --git a/bin/gstack-config b/bin/gstack-config
index 735b16754..a7d67a4f1 100755
--- a/bin/gstack-config
+++ b/bin/gstack-config
@@ -75,6 +75,16 @@ CONFIG_HEADER='# gstack configuration — edit freely, changes take effect on ne
 #                           # Set to true once the privacy gate has asked the user.
 #                           # Flip back to false to be re-prompted.
 #
+# ─── Plan-tune hooks ─────────────────────────────────────────────────
+# plan_tune_hooks: prompt   # Controls whether ./setup installs the plan-tune
+#                           #   Claude Code hooks (PostToolUse capture +
+#                           #   PreToolUse preference enforcement).
+#                           #   prompt — ask on a real TTY, skip otherwise (default)
+#                           #   yes    — install non-interactively
+#                           #   no     — skip non-interactively
+#                           # Override per-run: ./setup --plan-tune-hooks /
+#                           #   --no-plan-tune-hooks, or env GSTACK_PLAN_TUNE_HOOKS.
+#
 # ─── Advanced ────────────────────────────────────────────────────────
 # codex_reviews: enabled    # disabled = skip Codex adversarial reviews in /ship
 # gstack_contributor: false # true = file field reports when gstack misbehaves
@@ -110,6 +120,8 @@ lookup_default() {
     cross_project_learnings) echo "" ;; # intentionally empty → unset triggers first-time prompt
     artifacts_sync_mode) echo "off" ;;
     artifacts_sync_mode_prompted) echo "false" ;;
+    plan_tune_hooks) echo "prompt" ;; # prompt | yes | no — controls ./setup plan-tune hook install
+
     redact_repo_visibility) echo "" ;; # empty → fall through to gh/glab detection
     redact_prepush_hook) echo "false" ;;
     # Brain-aware planning (v1.48 / T5+T10+T16). Defaults documented inline:
@@ -315,7 +327,7 @@ case "${1:-}" in
     for KEY in proactive routing_declined telemetry auto_upgrade update_check \
                skill_prefix checkpoint_mode checkpoint_push explain_level \
                codex_reviews gstack_contributor skip_eng_review workspace_root \
-               artifacts_sync_mode artifacts_sync_mode_prompted; do
+               artifacts_sync_mode artifacts_sync_mode_prompted plan_tune_hooks; do
       VALUE=$(grep -E "^${KEY}:" "$CONFIG_FILE" 2>/dev/null | tail -1 | awk '{print $2}' | tr -d '[:space:]' || true)
       SOURCE="default"
       if [ -n "$VALUE" ]; then
@@ -331,7 +343,7 @@ case "${1:-}" in
     for KEY in proactive routing_declined telemetry auto_upgrade update_check \
                skill_prefix checkpoint_mode checkpoint_push explain_level \
                codex_reviews gstack_contributor skip_eng_review workspace_root \
-               artifacts_sync_mode artifacts_sync_mode_prompted; do
+               artifacts_sync_mode artifacts_sync_mode_prompted plan_tune_hooks; do
       printf '  %-24s %s\n' "$KEY:" "$(lookup_default "$KEY")"
     done
     ;;