Chat panel in the garden editor (#57) (#71)

Co-authored-by: Steve Dudenhoeffer <[email protected]>

web/src/editor/UndoButton.tsx

@@ -1,6 +1,6 @@
 import { Button } from '@/components/ui/Button'
 import { cn } from '@/lib/cn'
-import type { ChangeSet, UndoOutcome, useUndo } from '@/lib/history'
+import type { UndoOutcome, UndoTarget, useUndo } from '@/lib/history'
 
 /**
  * Undo, plus what happened. Paired with useUndo so the history list and the
@@ -14,7 +14,7 @@ export function UndoButton({
   className,
   label = 'Undo',
 }: {
-  changeSet: ChangeSet
+  changeSet: UndoTarget
   undo: ReturnType<typeof useUndo>
   className?: string
   label?: string