First full working version.

.gitignore

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+# Rust artifacts
+/target/
+Cargo.lock
+
+# IDE and editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# OS generated files
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+$RECYCLE.BIN/
+
+# Logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Flamegraph output
+flamegraph.svg
+perf.data*
+
+# MacOS
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+
+# Temporary files
+*.tmp
+*.temp
+
+# Backup files
+*.bak
+*.backup
+
+# Test artifacts
+test-results/
+test-output/
+
+# Benchmarks
+criterion/