It used to be that a 512GB SSD for your Windows installation felt ample. Then came the "AI" wave.
Suddenly, browsers, code editors (like VS Code or Cursor), and local dev tools are "AI-powered." While the features are great, they often silently download Large Language Model (LLM) files directly to your machine. These models can be several gigabytes each and are almost always hardcoded to live in your user profile (C:\Users\[Name]\AppData\Local).