The webserver renders a boot-readiness tail after the injection rows and
AppWebEntry.run awaits the __DSH_BOOT_READY__ deferred before reading any
injected state. Whichever bootstrap applies the injection table settles
the deferred - the served renderer resolves it inline, an asynchronous
bootstrap installs it ahead of the entry module and settles it with the
handshake - so both deployments run one startup chain and a failed
handshake surfaces on the boot page instead of proceeding on missing
globals.