Change cookie SameSite policy to Lax to fix login redirection issue

backend/src/diff.rs

@@ -85,7 +85,7 @@ pub fn diff_torrents(old: &[Torrent], new: &[Torrent]) -> DiffResult {
             has_changes = true;
 
             // Log status changes for debugging
-            tracing::info!(
+            tracing::debug!(
                 "Torrent status changed: {} ({}) {:?} -> {:?}",
                 new_t.name, new_t.hash, old_t.status, new_t.status
             );

backend/src/handlers/auth.rs

@@ -74,7 +74,7 @@ pub async fn login_handler(
             let cookie = Cookie::build(("auth_token", token))
                 .path("/")
                 .http_only(true)
-                .same_site(SameSite::Strict)
+                .same_site(SameSite::Lax)
                 .max_age(Duration::seconds(expires_in))
                 .build();