ci / vet-and-test (pull_request) Successful in 45s
Why: Backend and Agent-Squad must consume the Agent-Native revision that rejects empty tool_calls and function_call terminals. Evidence: Full Backend vet and Go test suite passed with both exact gitlinks. Impact: Dependency gitlinks only; no Backend source change. Refs: Agent-Native PR #46; Agent-Squad PR #53; U3 r0.4 review closure