Document module boundaries in the README #60
Description
Is your feature request related to a problem? Please describe.
Monorepo structure (e.g., ante, app, wasmbinding) isn't explained in README.
Describe the solution you'd like
Add a section that briefly describes each top-level directory and its purpose.
Describe alternatives you've considered
Explore code manually, which is time-consuming.
Additional context
This benefits new contributors significantly.