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'

Author: xerial

CLAUDE.md

@@ -110,4 +110,7 @@ The project uses Docker-based cross-compilation toolchains (see `docker/` direct
 ### 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)
+- Always test on multiple JDK versions if possible (8, 11, 17, 21)
+
+### Native Code Testing
+- Use make clean-native native for testing native code