Agent Skills: ring:detecting-goroutine-leaks

Detecting goroutine leaks in Go: greps for goroutine patterns, audits goleak coverage (VerifyTestMain/VerifyNone), runs goleak, and dispatches ring:backend-go to fix leaks and add regression tests. Use after implementation or during review when code spawns goroutines or a leak is suspected. Runs before ring:reviewing-code. Skip for non-Go or code with no goroutines. Skip for panic/silent-death observability (use ring:using-runtime).