# Worldtree U11a (legacy memory → read_only) is PREPPED, not flipped.

`[2026-09-29]` **Worldtree U11a (legacy memory → read_only) is PREPPED, not flipped.** A staged, inert `/opt/worldtree/config/defaults.yaml.staged-u11a-read_only` sits on corviduo-dev. Applying it needs Prime's go AND demo on 48bdf235 or later (demo ran 1b8746e6, which predates U11a). Apply = back up, copy over `defaults.yaml`, `docker restart`, then read the boot line `memory cutover: legacy plane read_only (writer on, reader on)`. **Once the window opens, infra-hermes runs one U8 batch per day and I own the wrapper and the escalations (proposed, worldtree-dev agreed):** on nh3-dev in `~/development/Worldtree`, at demo's deployed SHA, `python -m core.memory_acceptance.live --runs 3 --gate --legacy-mode read_only --label window`. The verdict is in `trace1.md`; FAIL goes to worldtree-dev the same day, never a retry; no git commit; never two at once. The wrapper is NOT built yet, deliberately: it waits for the go.