Day 60: Decoupling State and CloudWatch FinOps

Today, on Day 60 of my 100 Days of Cloud challenge, I had to pause building new features to clean up some critical technical debt in my Serverless AI Financial Agent. When you are preparing an application to scale and handle real users, the little things you hardcoded during the sandbox phase will inevitably come back to haunt you. I faced two specific operational leaks today: one affecting my application's state, and the other quietly threatening my cloud billing. Fix 1: Decoupling Identity wit