Test generator: nested HTML elements, three-phase element setup
- parse_html now captures ALL elements (not just top-level) with parent-child relationships - emit_element_setup uses three phases: attributes, DOM tree, activation - ref() maps positional names (d1, d2) to top-level elements only - dom-scope: 9→14 (+5), reset: 3→6 (+3), take: 2→3, parser: 2→3 Net 0 due to regressions in dialog/halt/closest (needs investigation). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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