This is really cool! I like the fact that when you navigate to a method/declaration/whatever, it only contains the relevant snippet, rather than opening a secondary tab with the whole file scrolled to where the definition is.

I often end up in a situation where I keep losing track of whatever method I'm reading since I need to compare where a method is called vs its definition, which is frustrating. I like that I can just "pin" the method to the side, and can glance at it without accidentally switching to scrolling through the whole file in the pinned view.

I tried it out for a bit and I found it a bit too mouse-centric unfortunately, and I quickly ended up in a situation where I had way too many floating windows to manage, especially once I got into checking out methods inside of other methods. It would be nice to have an arrow or line to keep track of what the "parent" window is so that it's easier to build a sort of flowchart.

Regardless of my personal issues with it, hope you succeed with this! It's great to see alternative ways of thinking in this space, as I often feel things could be better but it's also hard to imagine how.