Args:
    name: Full name of the customer.
    email: Customer's email address (must be unique).
    phone: Optional phone number.

Args:
    customer_id: The customer's numeric id.

Use this instead of get_ticket_tool when you need the complete picture,
including the customer and the comment history.

Args:
    ticket_id: The ticket's numeric id.

Use this to find relevant policy or troubleshooting guidance before
advising on a ticket.

Args:
    category: One of 'billing' or 'account'.

Args:
    status: Filter by 'active' or 'inactive'. Omit for all customers.
    limit: Maximum number of customers to return.

Args:
    customer_id: Id of the customer raising the ticket.
    subject: Short summary of the issue.
    description: Full description of the issue.
    priority: One of 'low', 'medium', 'high', 'urgent'.

Args:
    status: Filter by 'open', 'in_progress', 'resolved', or 'closed'. Omit for all.
    priority: Filter by 'low', 'medium', 'high', or 'urgent'. Omit for all.
    customer_id: Only tickets belonging to this customer.
    limit: Maximum number of tickets to return.

Args:
    ticket_id: The ticket's numeric id.

Args:
    ticket_id: The ticket to assign.
    team: Name of the team, e.g. 'billing_team' or 'security_team'.

Args:
    ticket_id: The ticket to comment on.
    author: Who is writing the comment.
    body: The comment text.

Valid transitions: open -> in_progress/closed; in_progress -> resolved/open/closed;
resolved -> closed/in_progress; closed is terminal.

Args:
    ticket_id: The ticket to update.
    new_status: One of 'open', 'in_progress', 'resolved', 'closed'.

Args:
    ticket_id: The ticket to resolve.

Args:
    ticket_id: The ticket to delete.
    confirm: Must be explicitly set to true to proceed with deletion.