Prerequisites

• I searched existing issues and found no duplicates

Feature Summary

Fern now supports a centralized global-theme: nvidia that provides logos, favicon, CSS, footer, colors, layout, analytics JS, and theme settings for all NVIDIA docs sites. Per-repo copies of these assets are redundant and create maintenance drift.

Proposed Solution

• Add global-theme: nvidia and multi-source: true to fern/docs.yml
• Remove per-repo assets: SVGs, main.css, CustomFooter.tsx, BadgeLinks.tsx
• Remove logo, favicon, css, footer, colors, theme, layout, js, and experimental.basepath-aware from docs.yml (inherited from global theme)
• Bump Fern CLI to 5.30.2 (required for global-theme support)

Already adopted by topograph (#339, #340) and NVSentinel (#1320, #1321).

Success Criteria

• fern check passes
• Local preview renders with NVIDIA theme
• No per-repo SVG, CSS, or TSX theme files in fern/