Fix share link routing: add initialLocation to GoRouter and fix download URL host

go_cloud/internal/http/routes.go

@@ -2922,10 +2922,7 @@ func publicFileShareHandler(w http.ResponseWriter, r *http.Request, db *database
 	} else if r.TLS == nil {
 		scheme = "http"
 	}
-	host := r.Host
-	if host == "" {
-		host = "go.b0esche.cloud"
-	}
+	host := "www.b0esche.cloud"
 	downloadPath := fmt.Sprintf("%s://%s/public/share/%s/download?token=%s", scheme, host, token, url.QueryEscape(viewerToken))
 
 	// Determine file type