Is this valid lobster syntax. name: gmail_digital_declutter
steps:
- name: fetch_emails
tool: gmail.list_messages
arguments:
q: "is:unread" - name: triage_and_label
tool: llm.process
prompt: "Identify newsletters and receipts. Apply relevant labels and archive them." - name: human_check
type: approval_gate
prompt: "Review these 3 flagged high-priority drafts before I archive the rest."