Add API documentation link to dashboard

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 705f2157-ef97-4fbd-89e4-8c7f2ecaea90
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/7ed01c5f-a82d-405a-b728-b2e3d127c60c/6db4afa9-a759-45b0-afcb-99de7ac94121.jpg

client/src/layouts/dashboard-layout.tsx

@@ -189,6 +189,15 @@ export function DashboardLayout({ children, title, description }: DashboardLayou
           </div>
 
           <div className="flex items-center space-x-4">
+            <Button 
+              variant="default" 
+              className="flex items-center gap-2"
+              onClick={() => window.open('/api/docs', '_blank')}
+            >
+              <ClipboardList className="h-4 w-4" />
+              API Documentation
+            </Button>
+            
             <ThemeToggle />
             
             <Button variant="ghost" size="icon">