P6X4 ran web, worker, outbox, and indexer processes from one versioned artifact without pretending they needed identical credentials or resources.
#deployment
An unusable preview passed every automated gate because the check answered an operational question nobody reviewing the change had asked.
Building disposable preview environments made review concrete and turned duplicated build work into a solvable systems problem.
M31V separated build, upload, verification, and activation so an interrupted transfer could never become the public release.
A failed upload left C62Y serving new HTML with old assets, so even a small static catalogue learned to build immutable releases and activate them once.