fix(ci): ship bundled skills in release tarball

Squash merge PR #105 after validation.

.github/workflows/dev-beta-release.yaml

@@ -160,7 +160,7 @@ jobs:
           CGO_ENABLED=0 go build -tags embedui \
             -ldflags="-s -w -X github.com/nextlevelbuilder/goclaw/cmd.Version=${VERSION}" \
             -o goclaw .
-          tar -czf "goclaw-${VERSION}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz" goclaw migrations/
+          tar -czf "goclaw-${VERSION}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz" goclaw migrations/ skills/
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4