fix: reorder OpenAPI paths and fix file descriptor handling in diff mode

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/modes/server/api/mod.rs

@@ -20,9 +20,9 @@ use utoipa_swagger_ui::SwaggerUi;
         item::handle_get_item_latest_meta,
         item::handle_get_item_latest_content,
         item::handle_get_item,
-        item::handle_delete_item,
         item::handle_get_item_meta,
         item::handle_get_item_content,
+        item::handle_delete_item,
     ),
     components(
         schemas(