Claim-signoff gate for model-drafted docs ties each contract-like sentence to a named signatory

A developer write-up argues that letting models draft documentation by section gives every paragraph the trust of its easiest sentence, so an unowned promise about timing or compatibility can slip through review. The proposed fix moves the permission boundary down to individual sentences and separates machine-draftable text from claims that need a human signatory. It uses three artifacts: a front-matter list of regions a model may draft, a registry of signed claims, and a gate script that fails pull requests containing unsigned or expired claims. The author classifies claim types in a table, with navigation prose and schema-derived descriptions left outside the gate to avoid alert fatigue. The example scripts and outputs are illustrative rather than measured results, and readers are advised to reproduce them locally before relying on the gate in CI.