Page Data
The JSON the page owns, and the store it becomes at runtime.
Browsing live values while you work.
The Keys view is a searchable tree of the page's data, with a green “linked” marker on every path something is already bound to.
- Clicking a key inspects it. Clicking one while a field is armed binds that field to it.
- Arming a field forces this view forward — you asked to pick a key, so it shows keys.
- The sheets projection is hidden here; browse sheet cells from the Binder instead.
