- go.mod: github.com/actenon/sdk-go → github.com/Actenon/sdk-go
  Go module paths are case-sensitive. The repo is Actenon/sdk-go (capital A).
  The lowercase form only worked by accident; copying the browser URL
  (which uses the capital) would fail with a module-path mismatch.
- All .go import paths updated to match.
- Added .github/workflows/ci.yml (go vet + go test).
- Rewrote README for standalone repo (was referencing ../../sdk/go paths
  and 'cd sdk/go' from the kernel repo).
- Tagged v1.0.0 needs to be re-pushed after this commit.