DownloadStatus was declared four times, byte for byte identically, in
radarr_models, sonarr_models, lidarr_models, and readarr_models: the same
variants, the same derive list, and the same serde, strum, and display_style
attributes. Every servarr's queue endpoint reports the same status
vocabulary, so there is nothing servarr specific about the type.
Move it into servarr_models, preserving that file's alphabetical ordering
(between DiskSpace and IndexerSettings), and drop the four copies. The
DownloadRecord types keep their per-servarr shapes and now reference the
shared enum.
The two enum tests, test_download_status_display and
test_download_status_to_display_str, were likewise duplicated in the four
per-servarr model test files. Keep one copy of each in servarr_models_tests
alongside the other shared enum display tests and delete the rest. The
per-servarr DownloadRecord fallback deserialization tests stay where they
are since they exercise each servarr's own record type.
Behavior is unchanged. Every remaining edit is an import path update.
Dark-Alex-17
35ed3f359d