Track Agency and Temporary Staff Hours

We use agency staff and pay whatever the agency invoices without checking. Build me an agency hours app. Keep agencies with their contact, the roles they supply and the charge rate for each including their margin. Keep temporary workers with the agency, the role, the assignment dates and the site. Record hours worked independently through our own clock-in rather than relying on the agency's figures. When an invoice arrives, record it and match it line by line against our own recorded hours, showing exactly where they differ and by how much. Show true cost per worker, per role, per site and cumulatively across an assignment. Add an AI agent that reviews an invoice against our records, lists every discrepancy with the value, drafts the query to the agency, and tells me where a worker cumulative cost has passed what a permanent hire would have cost. Automate two things: an alert when an invoice does not match our records, and a scheduled monthly report of agency spend by site and role. Two logins: a site manager who records hours and approves, and an owner who sees cost and handles invoices.