Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

internal/envdclient/dialer.go

@@ -0,0 +1,21 @@
+package envdclient
+
+import (
+	"fmt"
+	"net/http"
+)
+
+// envdPort is the default port envd listens on inside the guest.
+const envdPort = 49983
+
+// baseURL returns the HTTP base URL for reaching envd at the given host IP.
+func baseURL(hostIP string) string {
+	return fmt.Sprintf("http://%s:%d", hostIP, envdPort)
+}
+
+// newHTTPClient returns an http.Client suitable for talking to envd.
+// No special transport is needed — envd is reachable via the host IP
+// through the veth/TAP network path.
+func newHTTPClient() *http.Client {
+	return &http.Client{}
+}