v0.17.1

v0.17.1

Re-release of v0.17.0 with stable tag. The original v0.17.0 tag was moved after additional commits (CI fixes, test fixes), causing checksum mismatches in downstream consumers via the Go module proxy.

Changes since original v0.17.0 release commit

• ci: update GitHub Actions to latest versions, fix traefik path refs
• fix: set up proper GOPATH in tests for out-of-GOPATH repos
• revert: restore original GitHub workflow files
• docs: add CHANGELOG.md and update README for v0.17.0

No functional changes to the interpreter itself.