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What DeNA's Perl-to-Go Migration Reveals About the Value of Code-Independent Design Records

Migrating a 6,000-line legacy Perl API to Go, powered by AI agents. A case study published on DeNA's engineering blog paints a vivid picture of both the promise…

Is Your CLAUDE.md Just a Mission Statement on the Wall?

You keep adding rules to CLAUDE.md — coding standards, architecture policies, naming conventions, testing guidelines. Before you know it, it's hundreds of lines…

AI Fills the Gaps: How Incomplete Design Intent Triggers Over-Implementation

Recording design intent and feeding it to AI improves code quality. Our experiments confirmed this. But they also revealed something less intuitive. When desig…