preview-boot's hero wait was master's new textarea:enabled locator (the
conv refactor predates the Lexical composer); migrate it to the
data-composer-input surface like every other lane. Drop the unnecessary
DOMRect assertion oxlint flagged on the new Range stub.
One Vite build emits dist/index.html and dist/preview.html sharing every
chunk; the only difference is one prepended bootstrap entry whose module
connects the worker host, so the page from the stock entry onward is the
served startup chain verbatim. The dist moves to a relative base so the
preview mounts under any static directory, and the served form anchors
deep SPA-fallback paths with a rendered <base href="/">. The preview-boot
e2e serves the real built pages, packs the VFS image when absent, and
holds the boot line's lowering contract, the interactive hero, and a
clean page-error channel in headless Chromium.
imccyu