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/bundler/bun-react-modules-bundler.js

@@ -1,8 +1,8 @@
 import grabDirNames from "../../utils/grab-dir-names";
+import grabBunextPublicUrlPath from "../../utils/grab-bunext-public-url-path";
 import isDevelopment from "../../utils/is-development";
 import path from "path";
 import { rmSync, mkdirSync, writeFileSync } from "fs";
-const { BUNEXT_VENDOR_DIR, BUNX_CWD_DIR } = grabDirNames();
 const VENDOR_ENTRIES = {
     react: `
         import React from "react";
@@ -39,6 +39,7 @@ const VENDOR_ENTRIES = {
     `,
 };
 export default async function bunReactModulesBundler() {
+    const { BUNEXT_VENDOR_DIR } = grabDirNames();
     const dev = isDevelopment();
     rmSync(BUNEXT_VENDOR_DIR, { force: true, recursive: true });
     const tmpDir = path.join(BUNEXT_VENDOR_DIR, "_tmp");
@@ -61,7 +62,7 @@ export default async function bunReactModulesBundler() {
         },
     });
     rmSync(tmpDir, { force: true, recursive: true });
-    const PUBLIC_ROOT = BUNEXT_VENDOR_DIR.replace(BUNX_CWD_DIR, "/.bunext");
+    const PUBLIC_ROOT = `${grabBunextPublicUrlPath()}/vendor`;
     global.BUNEXT_REACT_IMPORTS_MAP = {
         imports: {
             react: `${PUBLIC_ROOT}/react.js`,