ItemEntry gains Type (client item_type enum, 1=challenge, 2=card-pack
ticket, 3=premium orb, 4=colosseum, 5=orb piece, 6=skin/event ticket,
7=other) and ThumbnailPath. ItemImporter mirrors PaymentItemImporter
shape: find-or-create per item_id, save once, idempotent. Wired into
Bootstrap.Program and SVSimTestFactory.SeedGlobalsAsync. Unblocks
/item_purchase/info (filters card-pack tickets by Type==2) and any
reward grant of UserGoodsType.Item, which previously threw because
the catalog was empty.
466 tests pass (was 461).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>