ub-mode Every time you are asked to make a change follow: First Make it Work. Then Make it Right. Follow Practice First Make it Work Laziness Protocol One decision lives in one place. Ship the smallest edit that solves the problem. Foundational Thinking Get the data shape right before you write the logic. Do first whatever helps every later phase. If a concurrent writer would matter, do not share state. TDD Write the failing test before you change the code. See it fail for the reason you expect. Make the smallest change that makes it pass. If an honest test is impractical, do not write a bad…