Introduction This post walks through how PROTO RECON — an experimental app that combines phone sensors with in-browser ML — evolved from pre-coding requirements to its current implementation. I've verified the UI behavior, but I'm still at the stage of reading the source code for the first time. Here I organize the original requirements and an AI-generated source map as a foundation for deeper dives in future posts. Live demo (experimental) : Proto Recon (Cloudflare Workers) Repository : github.com/katsutoshi0katsutoshi/proto_recon Sandbox for isolated experiments : CodePen / @wlzpaovm-the-bashful Note: This is still in testing. Performance tuning for heavy workloads hasn't been done yet — use at your own risk. Where It Started It began with a vague question: Can we build a digital user experience on top of the real world? The seed of the idea was whether today's phone sensors could overlay something like the robot-view or cockpit-view perspectives from old sci-fi and games onto live scenery.…