Jev in practice: typed decisions, scoped authority

Tenuo's team built a dependency upgrade agent to show how Jev, LangGraph, and Tenuo divide labor. Jev turns repo evidence into typed probabilistic decisions, LangGraph manages workflow state, and Tenuo issues a task-scoped warrant for each action. The design rule: keep judgment, control flow, and authority separate. The agent computes eligible actions, Jev picks the most useful one, and Tenuo gives that action a 600-second terminal session. The test-writing worker cannot access source-editing tools, and vice versa. The post does not disclose success rates or latency on real repos.