Futurist legacy viewer: dataset links -> futurist/ prefix (teleopSample reorg)

teleopSample: one shared step UI for all 22 episode pages

teleopSample: step annotations + timeline on the older pages, autoplay on ours

legacy teleop ep0-5: replace flickering face mosaic with stable Gaussian blur (chest_left/right_color)

Move teleop pages into teleopSample/; gzip-pack the Master mesh; per-clip default camera