Why

The shared-pack Gift preview can let its board and metadata occupy the same vertical space as the action buttons on desktop cards. The card needs a deterministic layout contract before the next browser refresh so KEEP AND PLAY, NOT NOW, and collision actions remain visible and clickable at every supported viewport.

What Changes

• Reserve a distinct action region in the Gift card so preview content cannot overlap action buttons.
• Keep the preview board, title, author, level count, and first-level metadata inside bounded content regions on desktop and mobile.
• Preserve minimum pointer hit targets, keyboard selection order, safe viewport margins, and collision-mode actions.
• Add canvas and browser regression coverage for desktop, narrow mobile, reduced-motion, and shared URL Gift entry.

Capabilities

New Capabilities

None.

Modified Capabilities

• game-stage: strengthen the Gift preview layout and interaction contract for desktop and mobile card placement.

Impact

• Affected presentation code: src/scenes/gift.js and its stage integration.
• Affected tests: Gift scene unit coverage and browser share-flow checks.
• No engine, pack schema, URL format, or installation behavior changes.