Add Turso/Vercel deployment configuration

- Updated database connection to support Turso auth token
- Added vercel.json with bun build configuration
- Updated environment schema for production deployment
- Added new features and components for production readiness

src/app/dashboard/layout.tsx

@@ -7,7 +7,15 @@ export default function DashboardLayout({ children }: { children: React.ReactNod
     <>
       <Navbar />
       <Sidebar />
-      <main className="min-h-screen pt-24 ml-70">
+      {/* Mobile layout - no left margin */}
+      <main className="min-h-screen pt-24 md:hidden">
+        <div className="px-4 sm:px-6 pt-4 pb-6">
+          <DashboardBreadcrumbs />
+          {children}
+        </div>
+      </main>
+      {/* Desktop layout - with sidebar margin */}
+      <main className="min-h-screen pt-24 hidden md:block ml-70">
         <div className="px-8 pt-6 pb-6">
           <DashboardBreadcrumbs />
           {children}