Adds newsletter infrastructure: CLI commands (new, list, preview, publish,
fetch, status) integrated into binder, Quarto archive site config for
mlsysbook.ai/newsletter/, and 12-month editorial content plan. Drafts
are gitignored for private local writing; sent newsletters are committed
as the public archive.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Renamed the core physics engine from to to better align with
the book's title and pedagogical goals.
New features:
- Introduced and classes in and .
- Digital twins now carry their own attributes (bandwidth, FLOPS) and
methods (ridge_point, memory_size).
- Global search and replace updated all 16 chapters to use .
- Maintained backward compatibility for legacy constants during migration.
Replaces hardcoded numerical values with symbolic Python variables derived from defined constants and formulas.
This improves code maintainability and consistency, ensuring calculations are based on accurate and up-to-date physical values.
Test suite validates structural invariants across chapters (progressive
knowledge building, cross-reference consistency, volume boundary compliance).
Update requirements.txt with new dependency.
