Regression prevention and quality gates

Problem

Semantic type detection accuracy and profile output quality can silently regress when new detectors are added, detection logic is refactored, or upstream profiling queries change. Currently, there are no automated gates in CI that verify semantic inference results against a known-good baseline — a change that causes 15% of email columns to be misclassified as generic strings would pass all existing tests. Without regression gates that compare detector output, confidence distributions, and profile completeness against reference datasets, every release risks shipping quality degradations that are invisible until users report them. Automated quality gates are essential to make the release process sustainable as the detector library grows.

Context

Possible Solutions

Plan

Implementation Progress

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