refactor: eradicate deprecated tools (sticky_notes, pinned_files, context_workspaces, pr_checklist, preferences) and dead code

server/src/api/events.rs

@@ -26,11 +26,15 @@ pub async fn wait_for_event_handler(
                     return axum::Json(event);
                 }
             }
-            Err(_) => {
+            Err(tokio::sync::broadcast::error::RecvError::Lagged(skipped)) => {
+                tracing::warn!("Event bus receiver lagged by {} messages; continuing wait.", skipped);
+                continue;
+            }
+            Err(tokio::sync::broadcast::error::RecvError::Closed) => {
                 return axum::Json(GenericEvent {
                     topic: "error".to_string(),
                     session_id: None,
-                    payload: serde_json::json!({"error": "Event bus lagged or closed"}),
+                    payload: serde_json::json!({"error": "Event bus closed"}),
                 });
             }
         }