fix: P0 — add User-Agent + retry to bash urllib, retry to service_spec_gen, empty-list guard

internal/core/client.go

@@ -25,11 +25,11 @@ func debugLog(format string, args ...interface{}) {
 
 // UniversalClient handles Nubes API logic
 type UniversalClient struct {
-	HttpClient        *http.Client
-	ApiEndpoint       string
-	ApiToken          string
-	ProviderVersion   string
-	LogLevel          string
+	HttpClient      *http.Client
+	ApiEndpoint     string
+	ApiToken        string
+	ProviderVersion string
+	LogLevel        string
 }
 
 // Request models