It's done. GPT-5 built the Portal iOS controller. There were several iOS specific issues, I spent about 50% of my time on this since Thursday. It's the closest I've come to pure vibe coding.
The result: here I am doing 3D modeling in VR with my iPhone. (Using Open Blocks.)
OK, I'm going to see if I can get gpt-5-high with codex and a solid implementation plan port the Portal controller from Android to iOS. This is a significant project, would have taken me at least 2 weeks in the before times. If it is going well I might livestream it.