Searches by moviehash computed from the media file and by TMDB id
with season/episode for TV, ranks candidates through
arr_core::subs::rank, and downloads under a lazily-fetched user
token. The daily download cap (429/406) surfaces as Error::RateLimited
so the loop can show a queue state. Credentials come from config or
environment only; tests run against wiremock fixtures.
The skeleton the subtitles milestone hangs off: provider domain types, an
object-safe Provider trait, the crate's own error type, and the cargo
features the translation backends will sit behind. No provider, no
translation, no ranking — DESIGN.md §15 keeps ranking pure in arr-core.
Miguel Palhas