Cold open
The single biggest enable of 2026 is that AI coding agents actually ship code now. Claude Code, Cursor, the new agentic loops — they don't just autocomplete, they read your repo, plan, and write multi-file diffs across dozens of files. That used to be a recorded demo. Now it's Tuesday. A junior dev with a good agent is producing what a senior dev with a good editor produced in 2023, in roughly half the keystrokes.
Then they hit Cmd+Z on the session and the context dies.
The "demo to prod" gap is the actual blocker
Every agent session builds up two layers of state. The first is the work product — the files it changed, the diff it shipped. That persists. The second is the understanding — which file holds the auth flow, why the billing webhook signs payloads the way it does, why Card is wrapped in forwardRef but Button is not. That second layer is what makes the agent effective inside the session. It is also what evaporates the second the session closes.
