Galerie live booth.copydev.fr + icones agrandies + pellicule

- booth/: serveur Node.js galerie photo live avec auth par code 4 chiffres
- Backend: envoi auto des photos vers booth, endpoint QR dynamique
- Frontend: code + QR booth sur ecran accueil, icone pellicule pour multi-shot
- Icones mode agrandies (5rem)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/css/style.css

@@ -249,6 +249,36 @@ html, body {
   font-size: 3rem;
 }
 
+.btn-mode .mode-icone-large {
+  font-size: 5rem;
+}
+
+/* === Booth info (code + QR sur accueil) === */
+.booth-info {
+  position: absolute;
+  bottom: 1rem;
+  left: 1rem;
+  display: flex;
+  align-items: center;
+  gap: 0.8rem;
+  background: rgba(0,0,0,0.5);
+  padding: 0.5rem 1rem;
+  border-radius: 12px;
+}
+
+.booth-qr {
+  width: 64px;
+  height: 64px;
+  border-radius: 6px;
+}
+
+.booth-code {
+  font-size: 1.4rem;
+  font-weight: bold;
+  color: rgba(255,255,255,0.7);
+  letter-spacing: 4px;
+}
+
 /* === Capture / Preview live === */
 .preview-live {
   width: 100%;