chore: add license header for web

web/src/core/api/chat.ts

@@ -1,3 +1,6 @@
+// Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+// SPDX-License-Identifier: MIT
+
 import { env } from "~/env";
 
 import { fetchStream } from "../sse";

web/src/core/api/index.ts

@@ -1,2 +1,5 @@
+// Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+// SPDX-License-Identifier: MIT
+
 export * from "./chat";
 export * from "./types";

web/src/core/api/types.ts

@@ -1,3 +1,6 @@
+// Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+// SPDX-License-Identifier: MIT
+
 import type { Option } from "../messages";
 import type { StreamEvent } from "../sse";