refactor: update HTTP request handling to use host.HTTPSend for improved error management

plugin_suite_test.go

@@ -4,6 +4,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/navidrome/navidrome/plugins/pdk/go/host"
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
 	"github.com/stretchr/testify/mock"
@@ -17,6 +18,6 @@ func TestDiscordPlugin(t *testing.T) {
 // Shared matchers for tighter mock expectations across all test files.
 var (
 	discordImageKey   = mock.MatchedBy(func(key string) bool { return strings.HasPrefix(key, "discord.image.") })
-	externalAssetsURL = mock.MatchedBy(func(url string) bool { return strings.Contains(url, "external-assets") })
+	externalAssetsReq = mock.MatchedBy(func(req host.HTTPRequest) bool { return strings.Contains(req.URL, "external-assets") })
 	spotifyURLKey     = mock.MatchedBy(func(key string) bool { return strings.HasPrefix(key, "spotify.url.") })
 )