Update reconciliation comments display to show comment counts

Adds reconciliation comments count to delivery data and updates UI to reflect this count, changing button color when comments exist.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 1e4433b5-47ab-464c-b663-fea2e53367dd
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/1e4433b5-47ab-464c-b663-fea2e53367dd/rQ1f1Q3

client/src/pages/BLReconciliation.tsx

@@ -948,10 +948,20 @@ export default function BLReconciliation() {
                                   variant="outline"
                                   size="sm"
                                   onClick={() => handleOpenCommentModal(delivery)}
-                                  className={`h-8 w-8 p-0 text-gray-600 hover:text-gray-700 ${delivery.reconciled ? 'opacity-70' : ''}`}
-                                  title="Voir/Gérer les commentaires"
+                                  className={`h-8 w-8 p-0 ${
+                                    delivery.reconciliationCommentsCount && delivery.reconciliationCommentsCount > 0
+                                      ? 'text-blue-600 hover:text-blue-700 border-blue-300' 
+                                      : 'text-gray-600 hover:text-gray-700'
+                                  } ${delivery.reconciled ? 'opacity-70' : ''}`}
+                                  title={`Voir/Gérer les commentaires ${
+                                    delivery.reconciliationCommentsCount ? `(${delivery.reconciliationCommentsCount})` : ''
+                                  }`}
                                 >
-                                  <MessageSquare className="h-4 w-4" />
+                                  <MessageSquare className={`h-4 w-4 ${
+                                    delivery.reconciliationCommentsCount && delivery.reconciliationCommentsCount > 0
+                                      ? 'fill-blue-100' 
+                                      : ''
+                                  }`} />
                                 </Button>
                                 {!delivery.reconciled ? (
                                   <>