Fix local adult metadata and watch history removal

internal/service/stream_test.go

@@ -0,0 +1,17 @@
+package service
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestAppendQueryToHLSSegments(t *testing.T) {
+	in := "#EXTM3U\n#EXTINF:4.0,\nseg_00000.ts\n#EXTINF:4.0,\nseg_00001.ts?old=1\n"
+	got := appendQueryToHLSSegments(in, "token=abc")
+	if !strings.Contains(got, "seg_00000.ts?token=abc") {
+		t.Fatalf("missing tokenized segment: %q", got)
+	}
+	if !strings.Contains(got, "seg_00001.ts?old=1") {
+		t.Fatalf("existing query should be preserved: %q", got)
+	}
+}