the tl;dr seems to be simply that it wasn't implemented yet
i've been pretty interested in this as well and got this snippet from chatgpt: `So could Iroh add direct browser-to-native connections without a proxy? Yes, by adding WebRTC support to the native side as well. Iroh’s own browser roadmap describes that approach and identifies the additional native WebRTC stack as a significant dependency cost. It does not describe a fundamental impossibility.`
i may take a stab at adding this functionality soon