Initial commit: add .gitignore and README

.gitignore

@@ -0,0 +1,38 @@
+# Dependencies
+node_modules/
+lib/
+
+# Build outputs
+dist/
+out/
+*.sol.js
+
+# Environment variables
+.env
+.env.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+
+# Package manager lock files (keep pnpm-lock.yaml, ignore others)
+package-lock.json
+yarn.lock
+
+# Foundry
+cache/
+broadcast/
+
+# Test coverage
+coverage/
+