Binder
The pick surface that connects component inputs to page data, live feeds and sheets.
The rail on the left.
| Source | Detail shown | Empty state |
|---|---|---|
| Page data | Key count | “This page has no data yet. Add keys in the Data tab's JSON view.” |
| Live feeds | Mapped-field count per poller; disabled pollers dimmed | “No API pollers yet. Add one in Units to bind fields straight to a feed.” |
| Sheets | Bound-cell count per sheet | “No sheets yet. Upload one in Logic → Sheets to bind fields to cells.” |
Whichever source is selected, the right pane is the same key tree with the same click-to-connect behaviour. If the feed or sheet you were browsing is deleted while the tab is open, the Binder falls back to Page data rather than rendering an empty pane.
