Interpret a test run: pass, no-tests, skipped, flaky, infra-failure from runner, exit code and count
https://agents.writerslogic.com/api/v1/test-exit-interpretOverview
Reads a finished test run (runner, exit code, optional version, flags, caller-parsed counts, optional go test output, optional per-attempt exit codes) and says whether tests actually passed, ran nothing, were all skipped, passed only on retry, or never ran properly (timeout, signal, internal error). Encodes only exit-code semantics the runners document: pytest 0-5, node:test, mocha (failure count or POSIX codes, --fail-zero since 9.1.0), cargo test, go test summary lines; jes