Update CLAUDE.md development workflow (#675)

* Update CLAUDE.md development workflow

- Fix typo in 'commit'
- Add PR guidelines and common development tasks
- Update native code build command to use 'make clean-native native'

* Update code formatting command to scalafmtAll

- Change from scalafmtCheckAll to scalafmtAll for actual formatting
- scalafmtAll applies formatting changes instead of just checking

Author: xerial

CLAUDE.md

@@ -105,12 +105,9 @@ The project uses Docker-based cross-compilation toolchains (see `docker/` direct
 ### Pull Request Guidelines
 - Use squashed commits when merging PRs to maintain clean commit history
 - Run tests before creating PR: `./sbt test`
-- Check code formatting: `./sbt scalafmtCheckAll`
+- Format code: `./sbt scalafmtAll`
 
 ### Common Development Tasks
 - When making changes to native code, rebuild with `make clean-native native`
 - For Java/Scala changes, use `./sbt ~test` for continuous testing
-- Always test on multiple JDK versions if possible (8, 11, 17, 21)
-
-### Native Code Testing
-- Use make clean-native native for testing native code
+- Always test on multiple JDK versions if possible (8, 11, 17, 21)