Harness engineering: a self-evolving feature loop in 312 lines of bash

Repo: github.com/tufailkhan45/harness-loop — one bash script, drop into any spec-driven repo. Originally published on: tufail.dev/blog/harness-engineering-self-evolving-loop Most posts about Claude Code talk about prompts. This one is about the harness — the wrapper around the model that turns a sin