Accounting firms often grow by adding more people to serve more clients. Ravical has raised $17 million in seed funding to pursue a different model: turning the expertise of a firm's best people into shared AI workflows that can be applied across its client base. MMC Ventures led the round, with existing investors Lakestar and Pitchdrive participating alongside new investor Shapers. The financing brings Ravical's total funding to $25 million. The company says more than 100 accounting firms…