feat: design tokens, globals CSS, fonts, navigation config

- Rewrite globals.css with dark-theme OKLCH tokens, glass utilities, ambient bg
- Update root layout with Inter + JetBrains Mono fonts, theme script
- Redirect / to /dashboard
- Update navigation config — remove search link, add recordings
- Update analysis search-panel with glass styling

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

services/frontend/src/components/analysis/search-panel.tsx

@@ -64,8 +64,8 @@ export function SearchPanel() {
           </p>
           {results.length === 0 ? (
             <EmptyState
-              icon={Search}
-              title="No messages found matching your query."
+              title="No messages found"
+              description="Try a different search query."
             />
           ) : (
             <div className="space-y-2">