You picked up this book because you can feel the ground shifting under software, and typing code line by line is no longer the scarce skill. Maybe you are a developer who senses that agents will write boilerplate while you judge the result. Maybe you run a small business and cannot hire a 120000 $ engineer for every idea, yet you need an app that ships. Or you are a tinkerer who wants to own the model that runs your tools, not rent it forever from 1 vendor. Whatever brought you here, you want a stack you can control, verify, and repeat, and this book builds it with you. This book is not a prompt trick list that works once and fails on your data, and it is not a vendor pitch for 1 subscription. What you actually need is a portable build loop, Specify, Delegate, Verify, Iterate, plus pieces that make the loop cheap and private, an open-weight GLM model you can run locally, a terminal agent that plans over 600 iterations, a cloud sandbox with proof, and an editor that keeps context. The pages that follow are organized as a tower, with project memory files and test harnesses that survive model updates. Inside, you'll discover: . The 4-part task template, goal, context, constraints, and acceptance criteria, with real before and after examples . How to run GLM locally via a runtime, plus API and coding plan routes at 10% of competitor cost . Claude Code in the terminal for meaty features and Codex in the cloud for batchable jobs with citations . Cursor as the thinking surface where inline edits and project chat keep the loop fast . The handoff discipline, 1 branch per task, plus verification via tests, diffs, and click-throughs . Automations that check bookings, draft reminders, and write a plain language daily summary while you sleep . Security, cost, and trust budgets, secrets in the environment and narrow permissions Ship an appointment scheduler in 1 week, not 1 quarter.