diff --git a/pi/files.linux/agent/settings.json b/pi/files.linux/agent/settings.json
index 611baf0..60ced90 100644
--- a/pi/files.linux/agent/settings.json
+++ b/pi/files.linux/agent/settings.json
@@ -1,15 +1,15 @@
 {
-  "lastChangelogVersion": "0.66.1",
+  "lastChangelogVersion": "0.67.1",
   "defaultProvider": "openai-codex",
-  "defaultModel": "gpt-5.3-codex",
-  "defaultThinkingLevel": "high",
+  "defaultModel": "gpt-5.4",
+  "defaultThinkingLevel": "medium",
   "theme": "matugen",
   "lsp": {
     "hookMode": "edit_write"
   },
   "hideThinkingBlock": false,
   "slowtool": {
-    "timeoutSeconds": 120,
+    "timeoutSeconds": 300,
     "enabled": true
   }
 }
\ No newline at end of file
diff --git a/scripts/files/cleanup-zellij-inactive.sh b/scripts/files/cleanup-zellij-inactive.sh
new file mode 100755
index 0000000..9938d8d
--- /dev/null
+++ b/scripts/files/cleanup-zellij-inactive.sh
@@ -0,0 +1,102 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Cleans up zellij sessions that are inactive:
+# - sessions marked EXITED (resurrectable metadata)
+# - running sessions with 0 attached clients
+#
+# Usage:
+#   cleanup-zellij-inactive.sh            # delete inactive sessions
+#   cleanup-zellij-inactive.sh --dry-run  # show what would be deleted
+
+DRY_RUN=0
+
+case "${1-}" in
+  "" ) ;;
+  -n|--dry-run) DRY_RUN=1 ;;
+  -h|--help)
+    cat <<'EOF'
+cleanup-zellij-inactive.sh
+
+Delete zellij sessions that are inactive:
+- EXITED sessions are deleted
+- running sessions with 0 attached clients are killed+deleted
+
+Options:
+  -n, --dry-run   Show what would be deleted
+  -h, --help      Show this help
+EOF
+    exit 0
+    ;;
+  *)
+    echo "Unknown option: $1" >&2
+    echo "Use --help for usage" >&2
+    exit 1
+    ;;
+esac
+
+if ! command -v zellij >/dev/null 2>&1; then
+  echo "zellij not found in PATH" >&2
+  exit 1
+fi
+
+mapfile -t session_lines < <(zellij list-sessions --no-formatting 2>/dev/null || true)
+
+if [ "${#session_lines[@]}" -eq 0 ]; then
+  echo "No zellij sessions found"
+  exit 0
+fi
+
+deleted=0
+failed=0
+kept=0
+
+for line in "${session_lines[@]}"; do
+  [ -z "$line" ] && continue
+
+  name="${line%% *}"
+  is_exited=0
+  if [[ "$line" == *"EXITED"* ]]; then
+    is_exited=1
+  fi
+
+  should_delete=0
+
+  if [ "$is_exited" -eq 1 ]; then
+    should_delete=1
+  else
+    # Running session: check attached clients
+    clients_out="$(zellij --session "$name" action list-clients 2>/dev/null || true)"
+    client_count="$(printf '%s\n' "$clients_out" | tail -n +2 | sed '/^\s*$/d' | wc -l | tr -d ' ')"
+    if [ "$client_count" -eq 0 ]; then
+      should_delete=1
+    fi
+  fi
+
+  if [ "$should_delete" -eq 1 ]; then
+    if [ "$DRY_RUN" -eq 1 ]; then
+      echo "[dry-run] delete: $name"
+      deleted=$((deleted + 1))
+    else
+      # --force also kills running sessions before deleting
+      if zellij delete-session --force "$name" >/dev/null 2>&1; then
+        echo "deleted: $name"
+        deleted=$((deleted + 1))
+      else
+        echo "failed:  $name" >&2
+        failed=$((failed + 1))
+      fi
+    fi
+  else
+    kept=$((kept + 1))
+  fi
+done
+
+echo
+if [ "$DRY_RUN" -eq 1 ]; then
+  echo "Would delete: $deleted"
+else
+  echo "Deleted: $deleted"
+  echo "Failed:  $failed"
+fi
+echo "Kept:    $kept"