a band lists its blocks, and selection is the URL

A fourth level under the open band only — a page of six bands with four blocks
each is thirty rows, and the nav stops being somewhere you can find anything.

Blocks are named by the same list the picker offers, so a thing is called the
same word wherever it appears.

Clicking a block in the PAGE now writes that address too, rather than calling the
handler directly. Both ways of picking a block are the same act, so neither can
disagree with the other about what is selected — and closing it is the band row.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

web/sections/AddComponentDialog.tsx

@@ -40,7 +40,7 @@ type Choice = {
  * inventing a roadmap. Gallery stopped being one of them on 2026-08-31: the set, its ordering and the
  * carousel that draws it were all already built, so the block is a reference to one.
  */
-const CHOICES: Choice[] = [
+export const CHOICES: Choice[] = [
   { kind: 'free-text', label: 'Text', hint: 'Words, headings and links', Icon: Type },
   /*
     One entry, either kind, because the block does not store which.