s/cleanup: kill idle sessions instead of removing done batch jobs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/s/cleanup

@@ -1,13 +1,11 @@
 #!/usr/bin/env bash
-# s/cleanup: remove all batch jobs with state "done".
+# s/cleanup: kill all idle sessions.
 set -euo pipefail
 
 OLLIE=${OLLIE:-$HOME/mnt/ollie}
 
-for job in "$OLLIE"/s/*/; do
-    [ -d "$job" ] || continue
-    state=$(cat "$job/state" 2>/dev/null | tr -d '[:space:]') || continue
-    case "$state" in
-        done*) rm -r "$job" ;;
-    esac
+for sess in "$OLLIE"/s/*/; do
+    [ -d "$sess" ] || continue
+    state=$(awk -F= '$1=="state"{print $2; exit}' "$sess/cfg" 2>/dev/null | tr -d '[:space:]') || continue
+    [ "$state" = "idle" ] && rm -r "$sess"
 done