Missing sort keys in various responses that return lists of ProfileView

[tunjid]

Is your feature request related to a problem? Please describe.

I'm building an open-source offline-first client for bluesky uing Compose Multiplatform: https://github.com/tunjid/heron.

Requests typically load data from a local database first, with calls to the API to refresh the local database. Certain endpoints do not return information that allow local sorting however, making combining local requests with updates from the network impossible.

A summary of endpoints without the desired behavior and those with the behavior are summarized in the table below:

Endpoint	Model Type	sort key	Returned in API Response
getFollows	ProfileView	??	No
getFollowers	ProfileView	??	No
getRepostedBy	ProfileView	??	No
getLikes	GetLikesLike	indexedAt	Yes
getTimeline	FeedViewPost	indexedAt	Yes
getFeed	FeedViewPost	indexedAt	Yes
getListFeed	FeedViewPost	indexedAt	Yes
getAuthorFeed	FeedViewPost	indexedAt	Yes

Describe the solution you'd like

It would appear the issues tend to be with endpoints that return a ProfileView. I assume:

getFollows: Sorted by the time a profile was followed
getFollowers: Sorted by the time a profile added a follower
getRepostedBy: Sorted by the time a post was reposted.

All of these are similar to the case of getLikes, however getLikes wraps the ProfileView instances returned in the following structure with the requisite information:

public data class GetLikesLike(
  public val indexedAt: Timestamp,
  public val createdAt: Timestamp,
  public val actor: ProfileView,
)

This can be applied to getFollows, getFollowers and getRepostedBy, allowing for local sorting of the query to resolve with the network response when available.

Describe alternatives you've considered

Coming up with a best guess heuristic to approximate network sort keys locally.

Additional context

Similar and related issues:

#1574
#3342