import { makeCloudflareApp } from "./app";import type { CloudflareEnv } from "./config"; // The MCP session Durable Object class, bound as `MCP_SESSION` in wrangler.jsonc.// Must be exported at the Worker entry module scope for the runtime to find it.export { McpSessionDO } from "./mcp"; // ---------------------------------------------------------------------------// The Worker fetch entry. `ExecutorApp.make`'s `toWebHandler()` produces a// `(Request) => Promise<Response>` — exactly a Worker handler — so the entry is// thin: build the app ONCE per isolate (memoized; the build runs the D1 schema// bring-up), then forward every request to its handler. `env` (the D1 binding +// Access vars) arrives with the request and is captured at build time.// --------------------------------------------------------------------------- let handlerPromise: Promise<(request: Request) => Promise<Response>> | null = null; const resolveHandler = (env: CloudflareEnv): Promise<(request: Request) => Promise<Response>> => {  if (!handlerPromise) {    handlerPromise = makeCloudflareApp(env).then(({ toWebHandler }) => toWebHandler().handler);  }  return handlerPromise;}; export default {  fetch: async (request: Request, env: CloudflareEnv): Promise<Response> => {    const serve = await resolveHandler(env);    return serve(request);  },};