feat: ajout favicon et icônes cross-platform (web, iOS, PWA)

- iconfull.png comme favicon browser, apple-touch-icon et icône PWA
- manifest.json pour support Android/PWA
- icon.svg clipboard cyan dans public/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/icon.svg

@@ -0,0 +1,28 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 75 100">
+  <!-- Board -->
+  <rect x="10" y="22" width="55" height="70" rx="6" ry="6" fill="#ECFEFF" stroke="#06B6D4" stroke-width="2.5"/>
+
+  <!-- Clip base (shadow/depth) -->
+  <rect x="25" y="14" width="26" height="17" rx="5" ry="5" fill="#0E7490"/>
+
+  <!-- Clip foreground -->
+  <rect x="26" y="12" width="23" height="15" rx="4" ry="4" fill="#06B6D4"/>
+
+  <!-- Clip hole -->
+  <rect x="32" y="8" width="11" height="10" rx="3" ry="3" fill="#0E7490"/>
+  <rect x="34" y="10" width="7" height="6" rx="2" ry="2" fill="#CFFAFE"/>
+
+  <!-- Checklist row 1 -->
+  <rect x="18" y="44" width="11" height="11" rx="3" fill="#CFFAFE" stroke="#06B6D4" stroke-width="1.5"/>
+  <polyline points="21,50 24,53 28,47" fill="none" stroke="#0891B2" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+  <rect x="33" y="47" width="22" height="5" rx="2.5" fill="#A5F3FC"/>
+
+  <!-- Checklist row 2 -->
+  <rect x="18" y="60" width="11" height="11" rx="3" fill="#CFFAFE" stroke="#06B6D4" stroke-width="1.5"/>
+  <polyline points="21,66 24,69 28,63" fill="none" stroke="#0891B2" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+  <rect x="33" y="63" width="17" height="5" rx="2.5" fill="#A5F3FC"/>
+
+  <!-- Checklist row 3 — unchecked -->
+  <rect x="18" y="76" width="11" height="11" rx="3" fill="#CFFAFE" stroke="#A5F3FC" stroke-width="1.5"/>
+  <rect x="33" y="79" width="13" height="5" rx="2.5" fill="#CFFAFE"/>
+</svg>

public/manifest.json

@@ -0,0 +1,17 @@
+{
+  "name": "Évaluateur Maturité IA Gen",
+  "short_name": "IAG Evaluator",
+  "description": "Outil d'évaluation de la maturité IA Gen par Peaksys",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#09090b",
+  "theme_color": "#06B6D4",
+  "icons": [
+    {
+      "src": "/iconfull.png",
+      "sizes": "any",
+      "type": "image/png",
+      "purpose": "any maskable"
+    }
+  ]
+}

src/app/layout.tsx

@@ -18,6 +18,12 @@ const geistMono = Geist_Mono({
 export const metadata: Metadata = {
   title: "Évaluateur Maturité IA Gen",
   description: "Outil d'évaluation de la maturité IA Gen par Peaksys",
+  icons: {
+    icon: "/iconfull.png",
+    shortcut: "/iconfull.png",
+    apple: "/iconfull.png",
+  },
+  manifest: "/manifest.json",
 };
 
 export default function RootLayout({