`ParsedPayload::Quote { text, inlines }` cannot represent block-level
children (lists, code, tables, images), so the BlockQuote end handler
silently drops them when assembling the Quote payload. This matches
§3.4 for now but is non-obvious and easy to regress without an
explicit pin.
Add a TODO(P1-future) comment near the Quote emission code and a
regression test (`quote_with_list_inside_drops_list`) that fixes the
current shape: a `> - item` blockquote produces a Quote with empty
text and empty inlines.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
altair823
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