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

server/src/handlers/tasks.rs

@@ -37,11 +37,7 @@ impl McpTool for AddTaskHandler {
             dependencies: deps,
             acceptance_criteria: vec![],
         };
-        let idx = state
-            .search_index
-            .read()
-            .unwrap_or_else(|e| e.into_inner())
-            .clone();
+        let idx = state.get_search_index();
         drop(idx.index_task(&task));
         state.tasks.modify(|tasks| {
             tasks.push(task);
@@ -108,11 +104,7 @@ impl McpTool for DeleteTaskHandler {
         });
 
         if deleted_count > 0 {
-            let idx = state
-                .search_index
-                .read()
-                .unwrap_or_else(|e| e.into_inner())
-                .clone();
+            let idx = state.get_search_index();
             for id in actually_deleted {
                 drop(idx.delete_document(&id));
             }