# CLAUDE.md This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository. ## Build Commands - Build: `sbt compile` - Test: `sbt test` - Single test: `sbt "testOnly fully.qualified.TestName"` - Test specific method: `sbt "testOnly fully.qualified.TestName -- -t test_name"` - SBT plugin tests: `sbt scripted` - Run g8 template test: `sbt g8Test` - Check formatting: `sbt scalafmtCheck` - Format code: `sbt scalafmt` - Fix code style: `sbt scalafixAll` ## Code Style - Scala 3 is primary (default 3.6.3) - 100 char line length, 4 space indentation - ZIO ecosystem is preferred - Use scalafmt (3.7.x) and scalafix (0.12.x) - Follow pure functional style with immutable data - Enable SemanticDB for tooling support - Prefer early-semver versioning - Centralize dependency versions in IWMaterialsVersions