Diagnose a failing Ginkgo suite as an agent — always run with --json-report into a predictable temp/gitignored location, read the terminal verdict line, then use jq to extract structured failure details (name, message, file:line, panic value, captured logs). Covers the panicked-vs-failed trap, panic locations pointing into the Go runtime, parallel output interleaving, reproducing with --seed, and progress reports for hangs. Use when a suite failed and you need to know why. Also invokable as /ginkgo:debugging-failures.