Verify: prove a player is yours with a deck

A claim on a player was taken on trust. Console ▸ Verify now proves it with the one field the game lets you set and the API shows to everyone: your active deck. Elixir names eight cards you own, shown two rows of four like the game; you put them in an empty deck slot and select it, and the page beside the brief shows what Elixir last saw, card by card, refreshed every fifteen seconds until all eight light up. Then the claim is marked verified and you switch your deck back. Challenges last twenty minutes, resume across a refresh, and the reads they ask for are not charged to your live-fetch allowance. Nothing is gated on it yet; the fact now exists for products that will.