Fix warnings and update tracability

src-tauri/src/jellyfin/client.rs

@@ -1,3 +1,5 @@
+//! TRACES: UR-009 | JA-001, JA-002, JA-003, JA-004, JA-007, JA-010, JA-011, JA-012, JA-017, JA-021 | IR-009, IR-010, IR-011
+
 use log::{debug, error, info};
 use reqwest::Client;
 use serde::Deserialize;