GetFriendsAsync, GetReceiveAppliesAsync, GetSendAppliesAsync, GetPlayedTogetherAsync,
SearchAsync all implemented. LoadViewerProjectionAsync materialises the full Viewer
entity (with Include/ThenInclude for SelectedEmblem/Degree) then projects in-memory —
avoids the EF Core limitation where Include is silently ignored under Select.
FriendService + IPlayedTogetherWriter registered as Scoped in Program.cs.
12 read tests, all green; full suite 1171/1171 still passing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>