Starts the secure Red company connection flow and generates a fresh one-time secure Red connection link and confirmation code. Use only when there is no active company connection, no valid connectionRef, the user explicitly asks to connect or reconnect, try again after a failed connection, expired session credentials, or when an old, used, or stale secure connection link no longer works. Do not call this tool when a valid connectionRef from brc_confirm_company_connection is already available and recent tool calls succeeded with it. Do not call this tool because a lookup returned no rows, partial data, or an empty list — that means no matching records, not an expired connection. Do not call this tool after successful company data retrieval unless the user explicitly asks to connect, reconnect, or add more companies. Always call this tool again to generate a new link — never reuse a previous connection link. Returns a one-time connection page URL (no time expiry, but each link works only once). On that page the user can enter a single company or upload a CSV for multiple companies — never in chat. After completing the secure page, the user should return to this chat and provide (copy/paste) the confirmation code shown on the success page. Do not paste an API key into chat.