Node 20+ ships a built-in localStorage/sessionStorage stub on globalThis
that throws "storage.setItem is not a function" unless Node is launched
with --localstorage-file=PATH. Vitest's jsdom env only overwrites a
fixed allow-list of globals, and neither storage is in that list — so
Node's broken stub shadows jsdom's working implementation and crashes
any code using zustand's persist middleware.
Override both globals in the test setup with an in-memory Storage
implementation. Resolves 10 keybindStore failures plus 1 FriendsPage
toast failure (all symptoms of the same root cause).
The remaining FriendsPage DM assertion failure is unrelated and is
left for follow-up triage as it touches federation DM-creation
behavior.
Jannis Braun
9fbe07571e