sdks/go: mirror Elydora-Go-SDK v2.0.1 under the /v2 module path

Rebuilt from the standalone f5341ed tree (durable managed-file
transactions, Kiro IDE adapter, hook retry with a bounded chain lock,
CLI version 2.0.1) with the Open-Source API trims re-applied: no admin
events, members, webhooks, deep health, token rotation, or agent
integration updates, and the mirror's freeze/unfreeze and registration
validation contracts kept. The root quickstart now imports the /v2 path.

Claude-Session: https://claude.ai/code/session_01QoUjdc7HGKTsgj5GhG8HvF

sdks/go/cmd/elydora/main.go

@@ -8,10 +8,10 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/Elydora-Infrastructure/Elydora-Go-SDK/cmd/elydora/plugins"
+	"github.com/Elydora-Infrastructure/Elydora-Go-SDK/v2/cmd/elydora/plugins"
 )
 
-const version = "1.2.1"
+const version = "2.0.1"
 
 func main() {
 	if len(os.Args) < 2 {