Defending worker pool implementation

An AI agent generated a Go worker-pool that processes a channel of jobs with a fixed number of goroutines and a `sync.WaitGroup`. A reviewer asks you to explain, line by line, how it guarantees all jobs finish before the function returns and whether it can deadlock or leak goroutines. You directed the generation but didn't write it. Below is the code. Walk through your defense and name any real issue.

```go func process(jobs []Job, workers int) []Result { jobCh := make(chan Job) resCh := make(chan Result) var wg sync.WaitGroup for i := 0; i < workers; i++ { wg.Add(1) go func() { defer wg.Done() for j := range jobCh { resCh <- handle(j) } }() } go func() { for _, j := range jobs { jobCh <- j } close(jobCh) }() var results []Result for r := range resCh { results = append(results, r) } wg.Wait() return results }