[kiro-langfuse] Missing hooks/lib/ directory — utils.js, handlers.js, langfuse-client.js not published

The applications/kiro-langfuse/ README documents a hooks/lib/ directory with three source files:

• hooks/lib/utils.js
• hooks/lib/handlers.js
• hooks/lib/langfuse-client.js

However, this directory is not present in the repository. The hooks/hook-handler.js file imports from these modules:

import { readStdin, buildInputFromEnv } from "./lib/utils.js";
import { getOrCreateTrace, flushLangfuse, HOOK_HANDLER_VERSION } from "./lib/langfuse-client.js";
import { routeHookHandler } from "./lib/handlers.js";

Start with applications/kiro-langfuse/README and hooks/hook-handler.js, then inspect the documented hooks/lib/ paths and their imports. Restore or publish utils.js, handlers.js, and langfuse-client.js so the documented hook entry point can resolve them, and verify that the imports and hook behavior work as described.