fix: remove QueryExpr::Window — no producer exists - #193
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L2→L3 conversion collapses every L2 Window (bare range vector) into canonical TimeRange unconditionally (crates/l2/src/lower.rs); nothing ever constructs canonical QueryExpr::Window. Confirmed empirically by walking every lowered query across all 7 corpora (~2600 queries). Drops the variant, its output_schema arm, WindowKind (its only field type, now itself unused), and every match arm across dag_export, canonicalize's children walker, variant_coverage, and test files. L2's own relational::QueryExpr::Window (a distinct, still-live type) is untouched. Fixes #182 Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
QueryExpr::Window(canonical L3 IR) has no producer: L2→L3 conversion collapses every L2Window(bare range vector) intoTimeRangeunconditionally (crates/l2/src/lower.rs). Confirmed empirically by walking every lowered query across all 7 corpora (~2600 queries).output_schemaarm,WindowKind(its only field type, now itself unused), and every match arm acrossdag_export,canonicalize's children walker,variant_coverage, and test files.relational::QueryExpr::Window(a distinct, still-live type) is untouched.output_schema_in(scope)tooutput_schema()across the same match statement; this PR's diff reflects that.Fixes #182
Test plan
cargo build --workspace --testscargo test --workspace(full suite green)cargo clippy --workspace --all-targets🤖 Generated with Claude Code