fix(remote): keep vault keys when a relayed licence is refused

proxy_license now raises ClickException instead of RemoteError (a SystemExit), so dl falls back to the track's vault key; licence messages name the track ("video 360p DV (592464997)").

tests/remote/unit/test_progress_sink.py

@@ -12,6 +12,7 @@ import pytest
 from unshackle.core.api.progress import (
     DOWNLOAD_PROGRESS_CEILING,
     build_job_progress_callables,
+    track_log_label,
     track_progress_label,
     track_progress_weight,
 )
@@ -48,6 +49,13 @@ def noop(**kwargs):
     pass
 
 
+def test_track_log_label_adds_the_track_id():
+    video = Video(2160, "DV")
+    video.id = "592464997"
+
+    assert track_log_label(video) == "video 2160p DV (592464997)"
+
+
 def test_track_progress_label():
     assert track_progress_label(Video(2160, "DV")) == "video 2160p DV"
     assert track_progress_label(Video(1080, "HDR10+")) == "video 1080p HDR10+"