New accountdelete package: AnonymizeAndTombstone journals every credential to the
retention log (reason=delete) then removes them (freeing email/vk/tg for reuse),
snapshots the real display name into deleted_display_name and scrubs the live one to
'Удалённый игрок', sets deleted_at, anonymizes the account's game-seat snapshots, and
drops its friendships/blocks/invitations/friend-codes/drafts/pending-codes — all in one
transaction. Chat, feedback and complaints are kept (the tombstone keeps their
no-cascade FKs valid). Session revocation + game forfeit are orchestrated a layer up.
Integration test covers journalling, tombstone/scrub and credential reuse.
Ilia Denisov