Improve camera support and photo capture, especially on tablets

Enhance camera functionalities with improved constraints, fallbacks, UI, and error handling within CameraModal and useCamera hook.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: dec54137-d5a2-4406-8ad4-5f2f9fb110bf
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/dcf949f8-2931-4556-aa3c-e4bf61346ee3.jpg

client/src/components/NewSaleForm.tsx

@@ -180,6 +180,16 @@ export default function NewSaleForm() {
 
   // Photo capture functions
   const handlePhotoCapture = async (photoType: PhotoType) => {
+    // Vérifier d'abord si les caméras sont supportées
+    if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
+      toast({
+        title: "Caméra non supportée",
+        description: "Votre navigateur ne supporte pas l'accès aux caméras",
+        variant: "destructive",
+      });
+      return;
+    }
+
     try {
       await startCamera(photoType);
     } catch (error) {