windows-debug: IPP loopback printer helper, Print-to-PDF fallback, debug installer, diag script

internal/auth/auth.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strings"
 )
 
@@ -83,6 +84,9 @@ func LoadXVeraeToken() (string, error) {
 		}
 	}
 	// macOS Keychain (generic password, account optional)
+	if runtime.GOOS != "darwin" {
+		return "", fmt.Errorf("no xVerae- token (set XVERAE_TOKEN or create %s)", filepath.Join(home, ".verae", "xverae-token"))
+	}
 	out, err := exec.Command("security", "find-generic-password", "-s", "verae.xVeraeToken", "-w").Output()
 	if err == nil {
 		t := strings.TrimSpace(string(out))
@@ -144,6 +148,9 @@ func SaveXVeraeToken(token string) error {
 		return err
 	}
 	// Keychain (best-effort): delete old, add new
+	if runtime.GOOS != "darwin" {
+		return nil
+	}
 	account := os.Getenv("USER")
 	if account == "" {
 		account = "verae"