WeakMap Primitive Key Boundary Motion

Animate [verified key examples] approaching a WeakMap boundary for 12 seconds. Supported identities enter; unsupported primitives remain outside with blank explanation cards. Preserve object identity markers and show no fictional garbage-collection timing.

Confirm required reference images and timing inputs are present before generating. Keep objects, identities, spatial relationships and light direction consistent. Render the clip when video generation is supported; otherwise supply a timed shot list, reference checklist and generation-ready prompt, labeled as a production plan. Do not claim rendered output without an actual file. Check the opening, transition and final frame against the stated counts and geometry.