1.4.0: not_found, server-only response options, compression

- Server functions can return not_found: true to render the 404 page
  with status 404.
- Page components and window.__PAGE_PROPS__ (and HMR updates) only get
  props, query, url and error. response_options, redirect, cache settings
  and res_transform stay on the server, so cookies and private headers no
  longer end up in the HTML. BunextPageProps is narrowed to match
  (breaking for code that read server-only fields from component props).
- response_options headers go through a Headers object, so repeated
  headers such as several Set-Cookie survive.
- Redirects: status_code wins over permanent; response_options headers
  and res_transform apply to redirects too.
- Gzip for compressible text responses; compress: false to turn it off.
- Files the router matches but never bundles (.server.ts, __root,
  excluded paths and directories) return 404 instead of looping through
  dev rebuild retries.
- Missing public files return 404 rather than 403, so dotted page paths
  like /users/john.doe fall through to pages again.
- importFresh detects rewrites within the filesystem's mtime granularity.
- README: self-hosted React (not esm.sh), snake_case option names, static
  file serving, cache headers, the new options.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

dist/functions/server/web-pages/grab-page-modules.js

@@ -4,6 +4,8 @@ import { log } from "../../../utils/log";
 import grabRootFilePath from "./grab-root-file-path";
 import grabPageCombinedServerRes from "./grab-page-combined-server-res";
 import importFresh from "../../../utils/import-fresh";
+import grabRedirectResponse from "../../../utils/grab-redirect-response";
+import NotFoundError from "../../../utils/not-found-error";
 export default async function grabPageModules({ file_path, debug, url, query, routeParams, skip_server_res, }) {
     const { serverRes } = skip_server_res
         ? {}
@@ -15,9 +17,11 @@ export default async function grabPageModules({ file_path, debug, url, query, ro
             url,
         });
     if (serverRes?.redirect?.destination) {
-        return Response.redirect(serverRes.redirect.destination, serverRes.redirect.permanent
-            ? 301
-            : serverRes.redirect.status_code || 302);
+        return await grabRedirectResponse({ serverRes, routeParams });
+    }
+    // Rendered as the 404 page by grabPageComponent's error path
+    if (serverRes?.not_found) {
+        throw new NotFoundError(`Page ${url?.pathname || file_path} not found`);
     }
     const { component, page_module, root_module: bundled_root_module, } = (await grabPageBundledReactComponent({
         file_path,