I reached the vault long after the torches burned low. Not the kind guarded by dragons or cursed gold, but something quieter and far more dangerous. A place where information slept. A place where every careless decision echoed long after the code was written. Data does not shout when it breaks. It whispers, then waits. Earlier in my journey, I believed the interface was the battlefield. I polished layouts, tuned interactions, and shaped flows until everything felt right. Then I needed memory. A saved state. A record of actions. A history that persisted beyond a single request. That was the moment I realized something uncomfortable. Without a vault, there is…