Newest row per platform (by $updatedAt) when multiple platform_upload rows exist.
Later $updatedAt wins when both timestamps parse; if the incumbent is unparseable, only a
parseable challenger replaces it; if both are unparseable, the first seen row for that platform stays.
Newest row per platform (by
$updatedAt) when multipleplatform_uploadrows exist. Later$updatedAtwins when both timestamps parse; if the incumbent is unparseable, only a parseable challenger replaces it; if both are unparseable, the first seen row for that platform stays.