Tap an illustrated bulk scan thumbnail to open the shared full-screen card art viewer. The entire artwork is contained; close cross and Android back return to the still-mounted summary. Queued cards and unsaved purchase inputs are retained. Missing artwork has no preview action. The artwork touch target is 44px.

App PR: https://github.com/snag-tcg/poc-tcg-collector/pull/972, including spacing companion #970. Focused controls/viewer/design tests: 267 passed. Full lint/typecheck/tests pass. A disposable-fixture Maestro flow is prepared, not run. Personal VPS only; no emulator, account/collection mutation, installation or deployment. Device visual validation remains pending.