The CFO’s office might be the most underrated place to build AI right now. Huge budgets, a ton of repetitive work, and teams that are stretched thin every single month. @Hyphenate saw it early. They just announced a monster $45M Series A at a $270M valuation led by Nexus Venture Partners, with B Capital and OpenAI, HubSpot, and Dropbox joining in. Here’s why it matters for the enterprise AI playbook: They didn't build another novelty chatbot. They built an autonomous finance platform for the…