fix :has() with chained relative combinators - #156
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estools#148 hasSelector previously parsed a leading combinator (e.g. `> A > B`) by taking the whole remainder as an independent selector and wrapping it once with exactNode, producing a right-nested structure instead of the left-associative chain used by top-level selectors. This caused false negatives (`X:has(> A > B)` not matching valid nested structures) and false positives (matching when the :has() subject itself satisfied an inner constraint). Rebuild the chain the same way the `selector` rule does, seeding the left-associative fold with exactNode for the leading combinator. Regenerate parser.js from grammar.pegjs and add regression tests.
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fix :has() with chained relative combinators; fixes #152 ; closes #148
Claude AI suggested changes.