Use single up/down button per project

handlers/arcane.py

@@ -21,10 +21,12 @@ def _arcane_kb(page: int, total_pages: int, items: list[dict]) -> InlineKeyboard
         pid = p.get("id", "")
         if not pid:
             continue
+        status = p.get("status", "unknown")
+        action = "down" if status == "running" else "up"
+        action_text = "⏹" if action == "down" else "▶️"
         rows.append([
             InlineKeyboardButton(text=f"🔄 {name}", callback_data=f"arcane:restart:{pid}"),
-            InlineKeyboardButton(text="▶️", callback_data=f"arcane:up:{pid}"),
+            InlineKeyboardButton(text=action_text, callback_data=f"arcane:{action}:{pid}"),
-            InlineKeyboardButton(text="⏹", callback_data=f"arcane:down:{pid}"),
         ])
 
     nav = []