The repeater becomes a real container

[AllTerrainDeveloper]

The repeater used to be a summary card that said "set this up in the panel on the right" — and the panel had no way to put fields in it. This makes it a container everywhere it appears.

Builder

• The canvas draws the repeater as the actual row card the visitor will get: sub-fields render as full live previews inside it, editable in place.
• Fields drag from the palette into the repeater, from the canvas into it, out of it back to the canvas, and reorder inside it (Alt+arrows work too). Excluded types (nested repeaters, page breaks, files, signatures, totals) fall through to the canvas rather than silently breaking.
• Sub-fields are selectable with their own inspector — including a crumb ("Inside Attendees — answered once per Attendee") and the exact formula reference to copy. Logic/prefill are hidden on sub-fields because neither has a per-row meaning.
• The card title is the new itemLabel setting, editable where it sits: type "Attendee" and every front-end card numbers itself.

Front end

• Every row is a titled card — "Attendee 1", "Attendee 2" — with a header, a named Remove button, role="group" + aria-label, live renumbering on add/remove, and an Add button with real margins that no longer inherits the submit button's width.

Formulas — both engines, held together by the shared fixture table

• {attendees} → the row count ({attendees} * 15 is per-head pricing).
• sum( {attendees.age} ) → one argument per row, for sum/avg/min/max as sole argument.
• {attendees.age} anywhere else → the total across rows (spreading into pow(x, 2) would shift its arguments, so it deliberately doesn't).
• Priced choices inside a repeater contribute per row; abandoned empty rows count nowhere, agreeing with the sanitiser.
• The browser recomputes totals live as rows are typed, added, and removed; the formula editor offers repeater chips and previews against two sample rows.

Analytics

• The repeater's panel reports rows-per-entry (histogram, mean, median).
• Every sub-field reports as a question of its own — "Attendees · Age" — with choice tallies and numeric summaries pooled across all rows, and honest per-row denominators (of/unit).

Validation

• Every row's sub-fields validate with the full rule set, named by row: "Attendee 2: Age is required." Plus a minRows floor.

Verified on the 8889 QA site: palette→repeater drag, itemLabel typed on the card, sum({rep.age}) composed by chips previewing 5, and the paired preview window summing 30+12→42.00 live, renumbering on add/remove.

Tests: 353 vitest + 690 PHPUnit green (12 new repeater calc conformance cases run through both engines), PHPCS clean, docs updated.

🤖 Generated with Claude Code

https://claude.ai/code/session_0119U4sRRWGcTQdwYreTwpAp