Add initial Go CLI skeleton

cmd/inbox/main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"os"
+
+	inboxcli "ai-workflow-skill/internal/cli/inbox"
+)
+
+func main() {
+	if err := inboxcli.NewRootCmd().Execute(); err != nil {
+		os.Exit(1)
+	}
+}

cmd/orch/main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"os"
+
+	orchcli "ai-workflow-skill/internal/cli/orch"
+)
+
+func main() {
+	if err := orchcli.NewRootCmd().Execute(); err != nil {
+		os.Exit(1)
+	}
+}