Summary

• bump pkg/version.go to 0.38.0
• document SemVer bump policy (patch vs minor) in AGENTS harness
• document draft-first release flow and explicit publish approval requirement in CONTRIBUTING

Why

• next release includes user-facing tooling changes and compatibility-affecting analyzer behavior, so we prepare v0.38.0
• release process expectations are now explicit in repository docs/harness

Validation

• go test ./pkg/...