emet 1.2.0 -- the DeepEval reporter ships in the wheel

The signed eval-run receipt reporter for DeepEval now ships inside the emet wheel.

• Install: pip install emet[deepeval]
• Use: from emet.reporters.deepeval import mint_receipt
• A completed DeepEval run mints an emet witness receipt binding the eval record (model, dataset digest, metric/judge, per-case scores) that emet check re-verifies offline.

The zero-dependency verify core is untouched: deepeval stays an optional extra, imported lazily only when running an evaluation, and no core module imports the reporter. Core self-hash re-derives on the version bump, as with every release.