Preface

This book captures development notes, design proposals, and architecture decisions made during the development of Hahaha, including (but not limited to):

• Project overview: what the project is, how the repository is structured
• Implementation notes: high-level APIs and key internal interfaces between layers
• Feature discussions: why we do it, what we do, what we explicitly don’t do, and priorities
• Design trade-offs: comparing alternatives, risk analysis, compatibility, and evolution strategy
• Implementation approach: how to implement critical modules, code organization, pitfalls and postmortems
• Collaboration records: conclusions, follow-ups, and next actions

Intended audience

• New contributors: quickly understand the project’s context and historical decisions
• Feature implementers: align on boundaries, interfaces, and compatibility strategy
• Maintainers: build on existing conclusions and reduce repeated discussions

How to use this book

• Start with “Guide”: conventions and writing style
• Then “Project”: scope, terminology, and overall goals
• Write proposals in “Design”: solutions, interfaces, data structures, and boundaries
• Record conclusions in “ADR”: what we decided and why
• Keep process notes in “Discussions”: meeting notes, reviews, and iteration logs