feat: accumulator engine — Build/Apply for maximal consistent rule combinations#42

Merged

discreteds merged 38 commits into

feature/accumulator-engine

Apr 29, 2026

Commits on Apr 14, 2026

Merge pull request #39 from mountainash-io/release/26.4.0
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Commits on Apr 28, 2026

docs: spec for cross-backend performance benchmarks

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docs: implementation plan for cross-backend performance benchmarks

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fix(benchmarks): exclude ibis-polars from benchmark backends

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feat(benchmarks): add test-perf-save hatch command for JSON baselines

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feat(benchmarks): add synthetic data generator with tests

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feat(benchmarks): add scaling matrix and strategy isolation benchmarks

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fix(benchmarks): skip broken string-match strategies on pandas/narwhals backends

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chore(benchmarks): link string-match skips to upstream mountainash#89

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docs: rewrite README for expression-based engine architecture

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docs: add 'why metadata not code' motivation to README

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docs: use professional tone in README opening

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chore: update config for local dev (pyrightconfig, coverage, gitignore)

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chore: remove stale phase 1-3 benchmark and test scripts from repo root

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chore: remove stale phase 1-3 benchmark results

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chore: remove deprecated test files for deleted engines

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chore: remove stale planning and AI over-enthusiasm docs

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chore: remove TESTING.md (superseded by README and CLAUDE.md)

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chore: remove pre-expression-engine planning and retrospective docs

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chore: remove SQL reference files, update gitignore

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Merge branch 'main' into release/26.4.0
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Merge pull request #41 from mountainash-io/release/26.4.0
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Commits on Apr 29, 2026