ci / vet-and-test (pull_request) Successful in 44s
Why: subagent runs recorded zero tokens, cache hits were invisible in run records, the usage event skipped terminal paths, and stream retry existed only on the direct-chat path (audit N20 residual). Evidence: go test -count=1 ./... green; TestRetryAttemptsMapping (setting 0=off→-1, N→N), TestDirectRunUsageSplitOnRecord (Last* and cache land in the run usage), TestSubRunAccountsTokens (subagent accounting), TestAddUsageAccumulatesSplitFields (handle chain); pins carry Agent-Native#35/#37/#38/#39, Agent-Squad#41, Core Usage fields. Impact: run.Usage carries Last*/cache on every path; subagent runs are accounted; runtime.llmRetries maps onto the library default (setting 0 disables via -1); the verifier wraps retry+fallback explicitly; retry events surface as process parts. Refs: Agent-Native#35-#39, Agent-Squad#41, N3 plan WP6