Changing shortcuts
To change a shortcut, open Settings → Shortcuts, click it and press the new keys; conflicts are flagged. Overrides are saved in ~/Library/Application Support/Cra/keybindings.json as a map from an action id to its shortcuts. Like Chrome, pages get the first chance at shortcuts that are not reserved, so ⌘F inside Google Docs still finds in the document. The action ids are the same ones the cra:// scheme accepts.