feat( ENG-12684): v4 ONNX model + cumulative risk fixes + opt-in SFE preprocessor (includes ENG-12671)#52

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feat/sfe-preprocessor

Apr 21, 2026

Commits on Apr 19, 2026

feat(sfe): add FastText-based Semantic Field Extractor preprocessor

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fix: restore pipeline from earlier branch (v4 ONNX + cumulative + packing + mild density)

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Commits on Apr 20, 2026

test(sfe): use mock predictor so tests don't depend on fasttext.wasm

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fix(sfe,tier2): address cubic review comments

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fix(sfe): address remaining aikido + copilot review comments

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docs(sanitizer): clarify risk-level behavior in class docstring

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fix(sfe,tier2): address second Copilot review pass

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perf(tier2): batch per-string chunk inference to recover throughput

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perf(tier2): fast-path prepareChunks for texts with guaranteed fit

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fix(tier2): preserve fail-safe contract on ONNX errors

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feat: max-depth stack-safety cap on payload walks with observability

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fix(sfe): track stack depth separately from semantic field depth

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chore: apply biome formatter to extractFields signature

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