SOTA lightbox patterns adapted to the hub: images zoom (wheel/double-click)
pan rotate with a filmstrip + counter + focus trap; videos play in a
brand-skinned player (scrubber with buffered range, volume, speed, PiP,
fullscreen, keyboard: space/k, arrows ±5s, j/l ±10s, m, f, p, up/down).
Payloads are E2E-encrypted, so thumbnails and playback decrypt client-side
through the session cache (direct objects via presigned GET + CEK; others
via the streaming route) — the grid shows real video stills captured in the
browser. List view stays for documents; Media/Grid is the default for
image/video items. FileRow gains a View action for media rows.