Merge pull request #3 from GaoYusong/claude/improve-readme-and-makefile-sJh2l

Improve README and fix Makefiles for cross-platform compatibility

Merge pull request #2 from GaoYusong/claude/fix-openmp-and-update-tests-sJh2l

Fix clang-18 OpenMP crash and update test data for self-contained testing

Optimize performance and fix code style issues

Merge pull request #1 from GaoYusong/claude/add-claude-documentation-sJh2l

Add comprehensive CLAUDE.md for AI assistant onboarding

initial release