Emit backend: engine-parity automation, single-source analysis, arena reclamation, lexer cleanup#53

Merged

johnsoncodehk merged 8 commits into

issue-45-emit-backend-audit

Jun 20, 2026

Commits on Jun 20, 2026

test: wire the engine-parity gates into the check runner + CI (#45)
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parser: single-source the structural analysis across both engines (#45)
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lexer: drop the dead DFA emitter; de-dup + bake the emit-lexer whitespace path (#45)
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parser: bound arena growth across an edit session (#45)
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parser: splice deletion-shaped surgery in place (#45)
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parser: keep the adoption cache across recovery attempts (#45)
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docs: record how the windowed re-lex is verified (#45)
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test: pin the primary reject message, not the farthest-exploration hint (#45)
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