- Added communication rules specifying that user interactions should be in Japanese while code, comments, and commit messages remain in English.
- Clarified the purpose of the document being in English for context efficiency.
- Added critical rules for coding practices, emphasizing the use of Effect-TS and Hono RPC.
- Updated project overview to clarify the architecture and data handling.
- Revised development commands section to include mandatory quality checks and TDD workflow.
- Introduced coding standards for backend and frontend, focusing on type safety and testing practices.
