// ---------------------------------------------------------------------------// Docs reverse proxy — `/docs` (and everything under it) is served by Mintlify,// not this worker. We forward those requests to the Mintlify deployment so the// docs live on the first-party origin (`executor.sh/docs`) instead of a// `*.mintlify.dev` subdomain. Mintlify hosts the site under the same `/docs`// base path, so the pathname is forwarded UNCHANGED — only the host/proto swap// to the upstream origin (unlike the PostHog proxy, which strips its prefix).//// Like the PostHog/Sentry tunnels (and unlike the marketing proxy, which needs// the prod-only `env.MARKETING` service binding), this is a plain external// `fetch`, so it runs on every host — `/docs` previews against live Mintlify in// local dev too. `/docs` is distinct from the app-owned `/api/docs` (Swagger),// so this never shadows an Effect-served route.// --------------------------------------------------------------------------- import { createMiddleware } from "@tanstack/react-start"; const DOCS_UPSTREAM_HOST = "executor.mintlify.dev"; export const isDocsPath = (pathname: string) =>  pathname === "/docs" || pathname.startsWith("/docs/"); // Build the upstream request for an already-classified `/docs` path. Caller// guarantees `isDocsPath(pathname)` — we only swap the origin and fix up the// forwarding headers, preserving method, body, path, and query.export const buildDocsUpstream = (request: Request): Request => {  const url = new URL(request.url);  const forwardedHost = url.host;   url.hostname = DOCS_UPSTREAM_HOST;  url.protocol = "https:";  url.port = "";   const upstream = new Request(url, request);  // Mintlify keys canonical links off the public host; tell it the real one.  upstream.headers.set("X-Forwarded-Host", forwardedHost);  upstream.headers.set("X-Forwarded-Proto", "https");  // Never leak the executor.sh session cookie to the docs origin.  upstream.headers.delete("cookie");  return upstream;}; export const docsProxyMiddleware = createMiddleware({ type: "request" }).server(  ({ pathname, request, next }) => {    if (!isDocsPath(pathname)) return next();    return fetch(buildDocsUpstream(request));  },);