v0.2.0 - native drift detection bairn drift is now a native Go subcommand. Loads a TOML manifest, hits each endpoint with auth + paced delay, computes JSON-key-only shape signatures, optionally diffs against a prior baseline. Surfaces vendor schema changes before they break a fetch. Exit codes: 0 = no drift, 1 = drift found, 2 = config or transport error. Wires cleanly into the claude-drift-triage component in dunn.dev/pipeline so the LLM triage fires only on real changes. The Python prototype (discovery/probe/shape.py) stays in the repo as documentation of the methodology. Signature format is byte-compatible. Posture and conditions of use unchanged: NOTICE.md.