Add native Go CLI foundation (#103)

* Add native Go CLI foundation

- Add an experimental Go CLI shell with list, init, and start validation.

- Seed the Go service registry from the current TypeScript runtime contract.

- Cover the initial CLI and registry behavior with Go tests.

* Fix native Go foundation review issues

* Fix Go subcommand help exit codes

* Reject unexpected Go CLI arguments

* Fix native list service formatting

* Fix native Go CLI review issues

* Fix native Go CLI help output

Author: ctate

.github/workflows/ci.yml

@@ -24,10 +24,19 @@ jobs:
           node-version: 22
           cache: pnpm
 
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
       - run: pnpm install --frozen-lockfile
 
       - run: pnpm build
 
+      - run: go test ./...
+
+      - run: go build ./cmd/emulate
+
       - run: node scripts/sync-versions.mjs --check
 
       - run: pnpm format:check

.gitignore

@@ -1,5 +1,6 @@
 node_modules/
 dist/
+/emulate
 *.tsbuildinfo
 .turbo/
 .pnpm-store/