feat: recognize CutOS agent runtime

lib/agent-type.js

@@ -0,0 +1,21 @@
+'use strict';
+
+const OPENCLAW = 'openclaw';
+const CUTOS_AGENT = 'cutos-agent';
+const SUPPORTED_AGENT_TYPES = new Set([OPENCLAW, CUTOS_AGENT]);
+
+function resolveAgentType(raw = process.env.AGENT_TYPE) {
+  const value = String(raw ?? '').trim().toLowerCase();
+  const agentType = value || OPENCLAW;
+  if (!SUPPORTED_AGENT_TYPES.has(agentType)) {
+    throw new Error(`AGENT_TYPE must be one of: ${[...SUPPORTED_AGENT_TYPES].join(', ')}; received: ${raw}`);
+  }
+  return agentType;
+}
+
+module.exports = {
+  OPENCLAW,
+  CUTOS_AGENT,
+  SUPPORTED_AGENT_TYPES,
+  resolveAgentType,
+};