Add a selectable WebAssembly simulation engine to @simlin/engine#628

Merged

bpowers merged 28 commits into

mainfrom

engine-wasm-sim

May 23, 2026

Commits on May 23, 2026

engine: add resumable run_to/run_initials ABI to wasmgen blob
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engine: parity-test segmented and clamped wasm run_to vs VM
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engine: parity-test wasm reset (defaults + override-preserving) vs VM
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engine: parity-test mid-run wasm set_value and non-constant rejection
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libsimlin: exercise resumable wasm exports across the FFI compile path
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engine: segmented run_to parity for WORLD3 and C-LEARN wasm twins
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doc: note resumable wasm run ABI in simlin-engine module map
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engine: add wasmgen FFI wrapper + pure layout parser and strided read
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engine: add Rust-faithful canonicalize for wasm name resolution
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engine: wasm-engine sim creation and disposal in DirectBackend
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engine: per-op vm/wasm demux in DirectBackend with VM parity
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engine: thread engine selection through Model/Sim and gate getRun links
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engine: add end-to-end wasm name-resolution and facade parity tests
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engine: format Phase 2 wasm-backend source and test files
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engine: thread optional engine field through the worker simNew message
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engine: parity-test the wasm engine through the Web Worker path
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engine: pure benchmark harness (median + adaptive warmup/measure)
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engine: node VM-vs-wasm eval benchmark for fishbanks/WORLD3/C-LEARN
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doc: document the node VM-vs-wasm eval benchmark
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engine: harden benchmark seriesClose NaN handling and tighten harness tests
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doc: document wasm engine selection in @simlin/engine
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doc: add test plan for @simlin/engine wasm simulation backend
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doc: add @simlin/engine wasm sim implementation plan and test requirements
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engine: report completed-step count for wasm sims via saved-steps export
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engine: release wasm sim instance refs on dispose to bound memory
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engine: truncate wasm getSeries to completed steps
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engine: restore fresh curr state on wasm sim reset
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engine: reflect wasm setValue override in live curr state
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