Harness overlay

Minimize tool-call round trips: batch independent commands into one turn instead of issuing them one at a time, and avoid exploratory commands whose output you will not act on.

Preserve prompt-cache reuse: keep a stable order of file reads and commands, append new context rather than restating earlier context, and avoid re-reading files already in context.

Make the smallest targeted change that satisfies the task rather than rewriting or exploring more broadly than the task requires.