[vishr]

Summary

- Gradient ribbon mark and tracked uppercase wordmark
+ Waterfall mark and lowercase pitot in Geist 600
+ Product surfaces and violet palette across the documentation site

Replace the app, favicon, server and email marks; update the logo exporter and all six landing captures. Regenerate the embedded UI and the Geist social card. Keep status colors unchanged.

Evidence

• Before: docs used separate typography and surfaces; the app, emails and preview card carried the previous mark.
  After: supplied SVG assets copied exactly, full Waterfall geometry across the brand surfaces, and lowercase Geist lockups.
• Production UI builds and embedded-asset comparisons pass.
• Site type-check, production build and all post-build checks pass.
• Brand browser stories: 12 checks pass across both themes and review widths.
• Seeded landing captures: 3 checks pass.
• Social card renders with Typst 0.15.1 and Geist; logo and favicon rendered in both themes.
• Required legacy-brand scan returns no matches, including generated assets. Staged secret scan passes.
• just check: passes, including the complete Go suite, all static checks and all 1,790 UI tests across 122 files.
• Separate full Go suite and focused brand/auth/API tests pass.

Merge Danger

Door: two-way

Blast Radius: visual

Intentional breaking brand change across app, docs, email and social previews. No runtime behavior or data migration changes.