App #851 targets staging. Sealed item names now use card detail's display-bold xl/24 typography; series metadata uses body xs/16. The identity band no longer forces an 80 dp minimum height or an extra gap. Padding matches the card's light/dark identity treatment, and long names remain wrapping.

The Add to collection action uses the card-style offset depth layer tinted with the active accent and its outlined button treatment. The decorative layer ignores pointer events. Existing add, sign-in, personal valuation and item identifiers are unchanged. No backend or dependency change is required.

Validation: 3,004 Jest tests passed, 11 skipped; ESLint, TypeScript and diff checks passed. Failing regressions preceded the compact typography and button-depth corrections. The sealed-detail Maestro assertions were updated but not executed. No emulator was launched, no deployment performed, and no account or holdings were modified. Device rendering remains to be checked after the app update.