feat(01-04): design tokens Tailwind v4 + wire ClientDashboard in page.tsx

- globals.css: aggiunto @theme con palette light & clean (primary, secondary,
  tertiary, bg-subtle, border-light, accent, success, warning, info)
- app/c/[token]/page.tsx: import ClientDashboard, generateMetadata dinamico,
  React.cache() per deduplicare DB call tra metadata e render

src/app/c/[token]/page.tsx

@@ -1,28 +1,42 @@
+import { cache } from 'react';
 import { getClientView } from '@/lib/client-view';
+import { ClientDashboard } from '@/components/client-dashboard';
 import { notFound } from 'next/navigation';
 
-export const revalidate = 60; // ISR: revalidate every 60 seconds
+export const revalidate = 60; // ISR: revalidate ogni 60 secondi
 
-export default async function ClientDashboard({
+// React cache deduplicates DB calls within the same render
+const getCachedClientView = cache(getClientView);
+
+export async function generateMetadata({
   params,
 }: {
   params: Promise<{ token: string }>;
 }) {
   const { token } = await params;
-  const view = await getClientView(token);
+  const view = await getCachedClientView(token);
+
+  if (!view) {
+    return { title: 'Not Found' };
+  }
+
+  return {
+    title: `${view.client.brand_name} — Stato Progetto | iamcavalli`,
+    description: view.client.brief || 'Dashboard stato progetto',
+  };
+}
+
+export default async function ClientPage({
+  params,
+}: {
+  params: Promise<{ token: string }>;
+}) {
+  const { token } = await params;
+  const view = await getCachedClientView(token);
 
   if (!view) {
     notFound();
   }
 
-  return (
-    <div className="min-h-screen bg-white">
-      {/* Placeholder: Dashboard UI will be built in Plan 04 */}
-      <div className="p-6">
-        <h1 className="text-2xl font-bold">{view.client.brand_name}</h1>
-        <p className="text-gray-600">{view.client.brief}</p>
-        <p className="text-sm text-gray-400 mt-2">Token: {token}</p>
-      </div>
-    </div>
-  );
+  return <ClientDashboard view={view} />;
 }

src/app/globals.css

@@ -1,26 +1,48 @@
 @import "tailwindcss";
 
-:root {
-  --background: #ffffff;
-  --foreground: #171717;
-}
-
+/* =========================================================
+   Design tokens — light & clean palette (Tailwind v4 @theme)
+   ========================================================= */
 @theme inline {
-  --color-background: var(--background);
-  --color-foreground: var(--foreground);
-  --font-sans: var(--font-geist-sans);
+  /* Colori base */
+  --color-background: #ffffff;
+  --color-foreground: #171717;
+
+  /* Font */
+  --font-sans: var(--font-geist-sans), system-ui, -apple-system, BlinkMacSystemFont,
+    "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
   --font-mono: var(--font-geist-mono);
+
+  /* Palette brand iamcavalli — light & clean */
+  --color-primary:      #1a1a1a; /* charcoal per testo principale */
+  --color-secondary:    #666666; /* grigio medio per testo secondario */
+  --color-tertiary:     #999999; /* grigio chiaro per hint e timestamp */
+  --color-bg-subtle:    #f9f9f9; /* grigio molto chiaro per sfondi sezione */
+  --color-border-light: #e5e5e5; /* bordo sottile */
+  --color-accent:       #0066cc; /* blu accent */
+  --color-success:      #16a34a; /* verde per done/saldato */
+  --color-warning:      #ca8a04; /* giallo per in_progress/inviata */
+  --color-info:         #2563eb; /* blu per pending/da_saldare */
 }
 
-@media (prefers-color-scheme: dark) {
-  :root {
-    --background: #0a0a0a;
-    --foreground: #ededed;
-  }
+/* =========================================================
+   Base styles
+   ========================================================= */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html {
+  scroll-behavior: smooth;
 }
 
 body {
-  background: var(--background);
-  color: var(--foreground);
-  font-family: Arial, Helvetica, sans-serif;
+  background-color: #ffffff;
+  color: #171717;
+  font-family: var(--font-sans);
+  line-height: 1.6;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
 }