feat(registry): yt-* family — 11 retro-broadcast creator items (6 blocks, 5 components)

[jbernard077]

What

The yt- family: retro-broadcast creator-video items — scanline LCD boards, chromatic-fringe display type, and annotation overlays.

Blocks (6): yt-lcd-background (scanline board with pixel grid, light/dark schemes), yt-comment-card (stacked comment cards, light + overlay schemes), yt-prism-title (chromatic-fringe hero title for footage), yt-logo-intro (logo intro sequence), yt-vertical-fill (vertical media filling a 16:9 frame, three fill modes), yt-doc-lower-third (documentary name/role lower third).

Components (5): yt-camera-move (camera punch-in with edge defocus), yt-avatar-pip (circle PiP window), yt-feather-highlight (feathered spotlight), yt-circle-pointer (draw-on ring + countdown chip), yt-screen-warp (on-screen display effect).

• Shared --yt-* token block per item (paper/ink/red/cyan/prism channels/scanline…); all palette values tokenized
• Accessibility-checked defaults: board text resolves to scheme ink (AA); the bright cyan is documented dark-scheme/dark-footage-only; dim text tuned to pass 4.5:1 on the light board
• Seek-safe: single paused GSAP timeline per item, no rAF / randomness

Why

A second, deliberately louder design language next to the minimal mk- set (#1992): CRT-flavored boards and creator-annotation tools re-implemented clean-room from broadcast-vernacular conventions. No third-party assets or code copied.

Validation

• hyperframes lint → 0 errors
• hyperframes validate (contrast checks enabled) → no console errors, text passes WCAG AA
• Layout inspector → 0 issues
• The animated opacity + backdrop-filter combination in yt-camera-move snapshot byte-identical across independent headless runs

Notes for maintainers

• 11 commits, one per item — cherry-pickable
• The lower third is named yt-doc-lower-third to stay clear of the registry's existing yt-lower-third block — no overlap with or changes to that item
• External contribution — catalog PNG/MP4 upload needs a maintainer, per CONTRIBUTING; docs.json / catalog-index.json regeneration churn not committed

🤖 Generated with Claude Code

[jbernard077]

Preview reel — all 11 items back-to-back (66.0s, rendered with hyperframes render from this branch's item content):

📹 yt-family-preview.mp4 (7.7 MB)

t	item
0:00	yt-lcd-background
0:10	yt-comment-card
0:18	yt-prism-title
0:24	yt-logo-intro
0:30	yt-vertical-fill
0:38	yt-doc-lower-third
0:44	yt-camera-move
0:48	yt-avatar-pip
0:52	yt-feather-highlight
0:57	yt-circle-pointer
1:02	yt-screen-warp

Overlay items (prism title, annotations, lower third) are shown on a dark stage standing in for footage. Maintainers: happy to re-render any item solo for catalog media.