Focused AsNoTracking load with Info.SelectedEmblem/SelectedDegree includes
for the new MatchContextBuilder. Single test locks the include graph.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
GameStart already detects the Steam-vs-UDID mismatch produced by
wipe-and-resignup; it now also reclaims the orphan. New
ViewerRepository.MergeAnonymousViewerInto transfers the fresh UDID
from V_new onto V_old in one save (freeing the unique-index slot),
then deletes V_new in a second save. Partial-failure mode is a
benign null-UDID viewer; two rows never contend for the same UDID.
Side benefit: future GetViewerByUdid lookups now short-circuit to
V_old without going through the Steam handler.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Extracts the default-loadout body into a private BuildDefaultViewer
helper shared by the existing Steam-import path and a new
RegisterAnonymousViewer for /tool/signup. LinkSteamToViewer is the
seam SteamSessionAuthenticationHandler will call on first-Steam-touch
of a UDID-keyed viewer.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
