May 22, 2026 Why Version One Is Never the Problem: AI Coding and Long-Term Maintenance AI coding tools excel at generating version one. The real engineering challenge starts at version four, when the team needs to change something without breaking everything else. ai-engineeringsoftware-architecturerefactoringai-codebaselong-term-maintenance
May 22, 2026 AI-Generated Code and the Replaceability Principle The real measure of AI-generated code quality is not whether it works on day one. It is whether you can replace it on day thirty without rewriting everything else. ai-engineeringsoftware-architecturereplaceabilityai-generated-codemaintainability
May 22, 2026 Deterministic Guardrails for AI Codebases Human review is inconsistent. AI review is worse. The only scalable defense for AI-generated codebases is deterministic enforcement: rules that fail the build, not suggestions that get ignored. ai-engineeringsoftware-architectureguardrailssemgrepci-cdcode-review-automation
May 22, 2026 Your Unit Tests Pass. Your Production Code Is Still Broken. Code coverage metrics create a false sense of security. Here's why unit tests miss the bugs that actually cost you sleep, and what to test instead. deep-divesunit-testingtest-qualitybug-prevention
May 21, 2026 Rust Runtime Contracts Can Be Free in Release Builds, but the Compiler Won't Do It for You Rust strips debug assertions automatically, but real design-by-contract needs more than debug_assert!. deep-divesrustruntime-contractsperformance
May 20, 2026 Zero, One, or Twelve: How Many Assertions a Production Function Actually Needs Developers either scatter assertions like confetti or avoid them entirely. deep-divesassertionsproduction-codedefensive-programming
May 19, 2026 Your validation layer is bigger than your business logic Manual validation bloats your codebase and still misses edge cases. Here's how to enforce runtime contracts with declarative schemas that stay out of your way. deep-divesruntime-contractsvalidationdesign-by-contract
May 18, 2026 TypeScript strictNullChecks Is a Compile-Time Guard, Not a Runtime Shield strict mode catches the nulls you write, not the nulls that arrive at runtime from APIs, DOM queries, and JSON.parse. deep-divestypescriptnull-safetystrict-mode
May 17, 2026 In the AI Era, Code Review Becomes Specification Review When AI can generate implementation, tests, and contracts from a spec, the highest-leverage human work moves upstream. ai-engineeringcode-reviewspecificationsliving-specificationsci
May 16, 2026 The AI Safety Stack: Types, Contracts, Property Tests, and Mutation Gates If you want AI-generated code to survive production, do not rely on code review alone. ai-engineeringsafety-stacktypesdesign-by-contractproperty-based-testingmutation-testing
