Survey launch proposal

Working on a delivery brief for upcoming survey launch:

https://docs.google.com/document/d/1lg7W3obnXA94YgLOZmwMy2ZoOq3j6_8g1JM4CcdesjE/edit

Done:

- [x] Completed launch brief and shared with team members for comments and identified action items for Nate.

Review the linked Google Docs delivery brief and the completed checklist item about sharing it with team members and identifying action items for Nate. Confirm whether any work remains; the issue provides no repository files, tests, or concrete change, and the listed brief work is already marked done.

Written by the indexing model from the issue text.