fix: include R-finger tactile thumbnails (regen with explicit paths)

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

full-length previews with tpad-clone padding: assets/preview_stack_plates_D-WHEEL_2samples.mp4

full-length previews with tpad-clone padding: assets/preview_stack_plates_D-WHEEL_10samples.mp4

full-length previews with tpad-clone padding: assets/preview_ruler_into_pouch_PIKA_2samples.mp4

full-length previews with tpad-clone padding: assets/preview_ruler_into_pouch_PIKA_10samples.mp4

full-length previews with tpad-clone padding: assets/preview_router_cable_PIKA_2samples.mp4

full-length previews with tpad-clone padding: assets/preview_router_cable_PIKA_10samples.mp4

full-length previews with tpad-clone padding: assets/preview_recycling_to_bin_D-WHEEL_2samples.mp4

full-length previews with tpad-clone padding: assets/preview_recycling_to_bin_D-WHEEL_10samples.mp4

docs: assets/preview_stack_plates_D-WHEEL_2samples.mp4

docs: assets/preview_stack_plates_D-WHEEL_10samples.mp4

docs: assets/preview_ruler_into_pouch_PIKA_2samples.mp4

docs: assets/preview_ruler_into_pouch_PIKA_10samples.mp4

docs: assets/preview_router_cable_PIKA_2samples.mp4

docs: assets/preview_router_cable_PIKA_10samples.mp4

docs: assets/preview_recycling_to_bin_D-WHEEL_2samples.mp4

docs: assets/preview_recycling_to_bin_D-WHEEL_10samples.mp4

add bimanual layout: 2-sample README preview + 10-sample montage

add Baihu-VTouch sample episode + previews (CC-BY-NC-SA-4.0)