fix(queue): add --format=json and --limit flags to queue list

skills/kugetsu/scripts/kugetsu

@@ -56,14 +56,21 @@ Usage:
     kugetsu queue [subcommand]
 
 Subcommands:
-    list                                               Show pending tasks (default)
+    list [--limit=N] [--format=json]                 Show pending tasks (default: 10 items, text format)
     stats                                              Show queue statistics
     clear                                              Clear all queue items
     enqueue <issue-ref> <message>                      Enqueue a task
     help                                               Show this help
 
+Options for list:
+    --limit=N         Number of items to return (default: 10)
+    --format=json     Output in JSON format with stats
+
 Examples:
     kugetsu queue list
+    kugetsu queue list --limit=50
+    kugetsu queue list --format=json
+    kugetsu queue list --limit=20 --format=json
     kugetsu queue stats
     kugetsu queue clear
     kugetsu queue enqueue github.com/shoko/kugetsu#14 "fix bug"
@@ -355,19 +362,25 @@ PYEOF
 
 get_pending_tasks() {
     local limit="${1:-10}"
+    local format="${2:-text}"
     
     if [ ! -d "$QUEUE_ITEMS_DIR" ]; then
-        echo "[]"
+        if [ "$format" = "json" ]; then
+            echo '{"items": [], "total": 0, "pending": 0}'
+        else
+            echo "No pending tasks in queue."
+        fi
         return
     fi
     
-    python3 -c "
+    python3 << PYEOF
 import json
 import os
 import sys
 
 queue_dir = os.environ.get('QUEUE_ITEMS_DIR', '')
 limit = int(sys.argv[1]) if len(sys.argv) > 1 else 10
+format_type = sys.argv[2] if len(sys.argv) > 2 else 'text'
 
 items = []
 if os.path.isdir(queue_dir):
@@ -379,13 +392,27 @@ if os.path.isdir(queue_dir):
                     data = json.load(f)
                     if data.get('state') == 'pending':
                         items.append(data)
-                        if len(items) >= limit:
-                            break
             except:
                 pass
 
-print(json.dumps(items))
-" "$limit"
+items.sort(key=lambda x: x.get('pending_since', ''))
+
+if format_type == 'json':
+    output = {
+        "items": items[:limit],
+        "total": len(items),
+        "pending": len(items)
+    }
+    print(json.dumps(output))
+else:
+    if not items:
+        print("No pending tasks in queue.")
+    else:
+        print("Pending tasks:")
+        for t in items[:limit]:
+            msg = t.get('message', '')[:50]
+            print(f"  {t.get('id')}: {t.get('issue_ref')} - {msg}...")
+PYEOF
 }
 
 get_queue_stats() {
@@ -920,13 +947,24 @@ cmd_queue() {
             usage_queue
             ;;
         list)
-            local pending_tasks=$(get_pending_tasks 10)
-            if [ "$pending_tasks" = "[]" ]; then
-                echo "No pending tasks in queue."
-            else
-                echo "Pending tasks:"
-                echo "$pending_tasks" | python3 -c "import sys, json; [print(f\"  {t.get('id')}: {t.get('issue_ref')} - {t.get('message', '')[:50]}...\") for t in json.load(sys.stdin)]"
-            fi
+            local limit="10"
+            local format="text"
+            
+            while [ $# -gt 0 ]; do
+                case "$1" in
+                    --limit=*)
+                        limit="${1#*=}"
+                        ;;
+                    --format=json)
+                        format="json"
+                        ;;
+                    *)
+                        ;;
+                esac
+                shift
+            done
+            
+            get_pending_tasks "$limit" "$format"
             ;;
         stats)
             local stats=$(get_queue_stats)