refactor: remove redundant multi-line search index unwrap clones across all handlers via new get_search_index accessor

server/src/state.rs

@@ -123,6 +123,10 @@ impl MemoryState {
         self.graph.modify(update_fn);
     }
 
+    pub fn get_search_index(&self) -> MemoryIndex {
+        self.search_index.read().unwrap_or_else(|e| e.into_inner()).clone()
+    }
+
     pub async fn rebuild_index(self: &Arc<Self>) {
         if let Ok(new_idx) = MemoryIndex::new(&self.base_dir) {
             let idx = new_idx.clone();