I Let CodeSpeak Take Over My Repository

A hands-on experiment migrating a 13K-line fitness tracking web app into CodeSpeak, an alpha-stage AI-native programming tool that uses plain-English specifications to generate and manage code. The author runs `codespeak takeover` to auto-generate modular specs from the existing codebase, then implements a new feature by editing a spec file and running `codespeak build`. The first build introduced a silent bug in cardio session handling, which was fixed via a change request — with CodeSpeak also adding regression tests automatically. Key observations: CodeSpeak specs are intentionally concise and human-editable, the tool enforces spec-implementation consistency, and it requires genuine engineering understanding to use effectively. Still in alpha, it currently only supports Anthropic API keys.