feat(ui): apply Justine ink & parchment design system

- Map Justine tokens to shadcn CSS variables (--vibn-* aliases)
- Switch fonts to Inter + Lora via next/font (IBM Plex Mono for code)
- Base typography: body Inter, h1–h3 Lora; marketing hero + wordmark serif
- Project shell and global chrome use semantic colors
- Replace Outfit/Newsreader references across TSX inline styles

Made-with: Cursor

components/project-creation/CreateProjectFlow.tsx

@@ -81,7 +81,7 @@ export function CreateProjectFlow({ open, onOpenChange, workspace }: CreateProje
             boxShadow: "0 12px 48px rgba(26,26,26,0.16)",
             width: "100%",
             maxWidth: 520,
-            fontFamily: "Outfit, sans-serif",
+            fontFamily: "var(--font-inter), ui-sans-serif, sans-serif",
             pointerEvents: "all",
             animation: "vibn-slideUp 0.18s cubic-bezier(0.4,0,0.2,1)",
             transition: "max-width 0.2s ease",