https://blog.chuanxilu.net/en/tags/tech-spec/Recent content in Tech Spec on Chuanxilu for Skilled Homo sapiensHugoen-USWed, 29 Apr 2026 10:00:00 +0800https://blog.chuanxilu.net/en/posts/2026/04/prd-to-tech-spec-ai-design-guardrails/Wed, 29 Apr 2026 10:00:00 +0800https://blog.chuanxilu.net/en/posts/2026/04/prd-to-tech-spec-ai-design-guardrails/The second Aristotle refactor had clear requirements, clean code structure, passing tests. But the async background mechanism still did not work. The problem was not in the PRD; it was in the tech spec. This article covers what a PRD should contain, what a tech spec should add, and why both are non-negotiable when AI writes your code.