fix: add missing test helpers and fix interface assertion

integrations/playback/allanime/client.go

@@ -730,6 +730,17 @@ func detectStreamType(sourceURL string) string {
 	return "unknown"
 }
 
+func isLikelyM3U8(data []byte) bool {
+	return bytes.HasPrefix(bytes.TrimSpace(data), []byte("#EXTM3U"))
+}
+
+func isLikelyMP4(data []byte) bool {
+	if len(data) < 8 {
+		return false
+	}
+	return string(data[4:8]) == "ftyp"
+}
+
 func detectEmbedType(rawURL string) string {
 	lower := strings.ToLower(rawURL)
 	embedHosts := []string{"streamwish", "streamsb", "mp4upload", "ok.ru", "gogoplay", "streamlare"}

integrations/playback/allanime/client_test.go

@@ -441,7 +441,7 @@ func TestAllAnimeClientImplementsInterfaces(t *testing.T) {
 
 	var (
 		_ interface {
-			GetStreams(context.Context, int, string, string) (*domain.StreamResult, error)
+			GetStreams(context.Context, int, []string, string, string) (*domain.StreamResult, error)
 		} = &AllAnimeProvider{}
 	)