- améliore l'export/import (format de fichiers en paramètres, amélioration de la robustesse, )

- ajout bouton tout effacer des propositions et participants

src/app/admin/page.tsx

@@ -7,6 +7,7 @@ import { authService } from '@/lib/auth';
 import CreateCampaignModal from '@/components/CreateCampaignModal';
 import EditCampaignModal from '@/components/EditCampaignModal';
 import DeleteCampaignModal from '@/components/DeleteCampaignModal';
+import ShareModal from '@/components/ShareModal';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
@@ -14,7 +15,7 @@ import { Badge } from '@/components/ui/badge';
 
 import AuthGuard from '@/components/AuthGuard';
 import Footer from '@/components/Footer';
-import { FolderOpen, Users, FileText, Plus, BarChart3, Settings, Check, Copy, Mail } from 'lucide-react';
+import { FolderOpen, Users, FileText, Plus, BarChart3, Settings, Check, Copy, Mail, Share2 } from 'lucide-react';
 import StatusSwitch from '@/components/StatusSwitch';
 import { MarkdownContent } from '@/components/MarkdownContent';
 
@@ -27,6 +28,7 @@ function AdminPageContent() {
   const [showCreateModal, setShowCreateModal] = useState(false);
   const [showEditModal, setShowEditModal] = useState(false);
   const [showDeleteModal, setShowDeleteModal] = useState(false);
+  const [showShareModal, setShowShareModal] = useState(false);
   const [selectedCampaign, setSelectedCampaign] = useState<Campaign | null>(null);
 
   const [copiedCampaignId, setCopiedCampaignId] = useState<string | null>(null);
@@ -433,6 +435,18 @@ function AdminPageContent() {
                                   <Copy className="w-3 h-3" />
                                 )}
                               </Button>
+                              <Button
+                                variant="ghost"
+                                size="sm"
+                                className="h-7 w-7 p-0 text-slate-400 hover:text-slate-600"
+                                onClick={() => {
+                                  setSelectedCampaign(campaign);
+                                  setShowShareModal(true);
+                                }}
+                                title="Partager le lien"
+                              >
+                                <Share2 className="w-3 h-3" />
+                              </Button>
                             </div>
                           </div>
                         </div>
@@ -474,6 +488,14 @@ function AdminPageContent() {
         {selectedCampaign && (
           <DeleteCampaignModal isOpen={showDeleteModal} onClose={() => setShowDeleteModal(false)} onSuccess={handleCampaignDeleted} campaign={selectedCampaign} />
         )}
+        {selectedCampaign && (
+          <ShareModal 
+            isOpen={showShareModal} 
+            onClose={() => setShowShareModal(false)} 
+            campaignTitle={selectedCampaign.title}
+            depositUrl={`${window.location.origin}/p/${selectedCampaign.slug || 'campagne'}`}
+          />
+        )}
         
         {/* Footer */}
         <Footer />