Sidepipe

Initial release. Version 5 to match the family and the Craft major it targets.

Added

• Sidebar field layout element. Drop it into any tab in any field layout designer and that tab's fields render in the element editor's sidebar instead of the content pane.
• Two scopes on the marker: everything in this tab, or everything below this marker — so one tab can split between the two columns. A second marker stops the first one's run.
• Optional heading per group, and a per-group choice of above or below the element's own author/date/slug fields.
• Tab-name matching, for arranging a sidebar without touching the UI elements library. Sidebar out of the box; the list is a setting, matched without regard to case or spacing.
• Settings screen with the tab names, the default position, heading and width switches, a per-element-type escape hatch, and a list of every field layout that currently pipes something.
• A control-panel stylesheet that lifts a piped field's action menu out of the heading flow, so a narrow label column reads like Craft's own meta fields instead of wrapping to a stray “…”.
• Element and tab conditions are honoured in the sidebar exactly as they are in the content pane, and the marker's own visibility conditions decide whether the move happens at all — a marker that doesn't apply leaves its fields in the content pane rather than hiding them.