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/all-pages-esbuild-context-bundler.js

@@ -10,7 +10,6 @@ import esbuildCTXArtifactTracker from "./plugins/esbuild-ctx-artifact-tracker";
 import { logBuildErrorsOnce, } from "../../utils/build-error-log";
 import { log } from "../../utils/log";
 import grabRootFilePath from "../server/web-pages/grab-root-file-path";
-const { HYDRATION_DST_DIR, BUNX_HYDRATION_SRC_DIR } = grabDirNames();
 // Snapshot of the entry key set + root file presence of the last build.
 // When it differs from the freshly computed set, the esbuild context must
 // be recreated (entry points are fixed at context creation).
@@ -36,6 +35,7 @@ function arraysEqual(a, b) {
     return true;
 }
 export default async function allPagesESBuildContextBundler(params) {
+    const { HYDRATION_DST_DIR, BUNX_HYDRATION_SRC_DIR } = grabDirNames();
     try {
         const pages = grabAllPages({ exclude_api: true });
         global.BUNEXT_PAGE_FILES = pages;