Preserve FilePond temp files across partage validation redirects

app/public/partage/index.php

@@ -536,6 +536,9 @@ function handleShareLinkSubmission(string $slug): void
         unset($_SESSION[$shareCsrfKey]);
         unset($_SESSION['share_verified_' . $slug]);
         unset($_SESSION['share_active']);
+        unset($_SESSION['share_primed_files_' . $slug]);
+        // Clear FilePond temp file tracking — files have been moved to permanent storage
+        unset($_SESSION['filepond_tmp']);
 
         // Send confirmation e-mail - on delivery failure, redirect to retry page
         $emailError = null;