fixes

backend/src/app/repositories/share_repository.py

@@ -118,6 +118,12 @@ class ShareRepository:
         """
         if share.revoked_at:
             return False
-        if share.expires_at and share.expires_at < datetime.now(timezone.utc):
+        if share.expires_at:
+            # Ensure both datetimes are timezone-aware for comparison
+            now = datetime.now(timezone.utc)
+            expires_at = share.expires_at
+            if expires_at.tzinfo is None:
+                expires_at = expires_at.replace(tzinfo=timezone.utc)
+            if expires_at < now:
                 return False
         return True

frontend/src/pages/LibraryPage.tsx

@@ -102,7 +102,25 @@ export default function LibraryPage() {
   };
 
   const handleCopyShareLink = () => {
+    // Fallback for HTTP (clipboard API requires HTTPS)
+    if (navigator.clipboard && window.isSecureContext) {
       navigator.clipboard.writeText(shareLink);
+    } else {
+      // Fallback method for HTTP
+      const textArea = document.createElement('textarea');
+      textArea.value = shareLink;
+      textArea.style.position = 'fixed';
+      textArea.style.left = '-999999px';
+      document.body.appendChild(textArea);
+      textArea.focus();
+      textArea.select();
+      try {
+        document.execCommand('copy');
+      } catch (err) {
+        console.error('Failed to copy:', err);
+      }
+      document.body.removeChild(textArea);
+    }
     showSnackbar('Ссылка скопирована');
     setShareDialogOpen(false);
     setShareLink('');