Consider Restructuring The Entire Work

The book is starting to have cohesion issues, and there is way too much before you even start talking about "making games".

It could be an idea to split the book into sections or volumes:

- Maths, computer science, project management, design patterns...
- Real game dev: game loop, FSM, Design Docs, ...
- Marketing

This could make the first part/volume more of a "reference manual" for everything related to what is essentially a Computer Science Bacherlor's, while the rest can focus more deeply on strict game development.

The issue is about restructuring an entire book. Start by reading the current book's structure and content to understand the cohesion issues. Look at existing sections and chapters to see how they could be split into volumes. Determine what 'done' looks like by proposing a new outline with clear sections for math/CS, game dev, and marketing.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.