Enable prettier caching (--cache) across all package prettier scripts and the main format script, and optimize the custom license header checker to read only the first 1000 bytes of each file.
Performance Data:
- Repo-wide formatting (yarn format --all):
- Before caching: ~35-40s (uncached formatting + full license check)
- After caching: ~5.8s (cached formatting + header-only license check)
- Speedup: ~6x speedup