Bounded Contacts page (list detail) aggregate

Pure read: one list's contacts in import order, searched and filtered (all, not_called, reached, do_not_call), each with its first name, latest campaign outcome and do-not-call state. When a campaign uses the list (and its AI agent is hosted; an AI agent on the customer's own endpoint previews outcome external), a preview of what that campaign's AI agent says to the selected contact. For an AI agent with call variables set up (mode call_variables), the greeting, the script's opening and personalised lines and the SMS templates are rendered from this contact's values by the call-variables admission and template renderer, with the template's fallback wording where a value is missing (missing_values names them); when this contact's values would refuse the call (a required value missing, a wrong type), outcome is refused with the reason code, the field and the destination, never a value. For any other AI agent (mode as_written) the lines are shown as its calls speak them today. Fixed query budget; no provider or model call.