Parse-only DTO surface deleted across trackers and catalog models: quality-preset storageKey/fromStorage round-trips (persistence uses EnumPref on .name), PlexHome's placeholder identity fields (id stays — deriveHomeSecret reads it), SeerrUser.email/avatar, SimklSearchResult.endpointType, SimklDetail.type, SimklAllItemsEntry.status/isShow, TraktCatalogEntry.rank, CatalogItem.relevance, and the never-produced CatalogRankScope.favorited/.seasonal members with their label arms. Tracker root: OAuthProxyStart.expiresIn, TrackerSession.scope/isExpired, copyWith slimmed to its one real parameter, TrackerHttpClient.service. TrackerAccountStore.service and the trackerAccountStore() alias are live (persisted-blob validation, callers) and stay.
Connects MDBList through its OAuth device-code grant, registered as a
Device Code app so no client secret or redirect URI ships in the binary
and TV, mobile and desktop all use the same flow.
MDBList omits `verification_uri_complete`, but its device page seeds the
code field from a `user_code` query parameter and the sign-in redirect
preserves the query string, so the activation link is built locally and
the dialog's open button lands on a filled-in form instead of an empty
one. A server-supplied complete URL still wins if one ever appears.
Poll state is read from the response body rather than the status code:
`authorization_pending` and `slow_down` both arrive as HTTP 400, and a
missing grant answers 404 `device_not_found`.
Writes go out as real-time `/scrobble/*` reports plus `/sync/watched`
for the marks that never pass through the player, with ratings on
`/sync/ratings`. Matching uses IMDb and TMDb only — MDBList's id block
has no `tvdb` field, so a TVDB-only item is skipped rather than written
under an empty id block.
Introduces shared seams for paginated views, D-pad reorder, media control
routing, async singletons and the device method channel, then points the
open-coded copies at them.
Also removes unused models and duplicated provider/server plumbing, folds
the twice-implemented artifact store in the server, and factors the
repeated Flutter toolchain prologue in CI into a composite action.
Replace the per-tracker json_serializable session classes and account stores with a shared TrackerSession (service-aware persisted validation), a single TrackerAccountStore, a shared TrackerHttpClient, and an AnimeListTrackerBase mixin for MAL/AniList. Scope the per-service rebind guard so a disconnect can't abort a racing profile load. Add migration-safety, MAL refresh, episode-count cache, and content-type tests.