Privacy-first mind mapping app. Part 1: Constraints Before Tech

I started with a romantic idea: build the entire product in Rust, with Rust‑first tools, end to end. I still like that idea philosophically. In practice, it was too much for one person and too far removed from the real goal. The real goal was simple and already described in Part 0 : a fast, practical, keyboard‑friendly app that is online and privacy‑respecting. Not a technology demo. Not a purity contest. At first, I treated the tech stack as if the technology choices were the product. For the b