How would you build an automated commentary engine for daily trade attribution at scale? [R]

Hey everyone, I'm currently working through a problem in the market risk reporting space and would love to hear how you all would architect this. The Use Case: > I have thousands of trades coming in at varying frequencies (daily, monthly). I need to build a system that automatically analyzes this time-series data and generates a precise, human-readable commentary detailing exactly what changed and why.