fix: address review feedback on PR #106

- Add 429 rate-limit retry logic to doJSONRequest (matching doRequest
  behavior) so write operations (PostReview, DismissReview) properly
  retry when rate-limited by GitHub
- Remove redundant explicit case for ReviewEventComment in
  translateReviewEvent (default already handles it)
- Add ordering comment on --gitea-url alias registration explaining
  the dependency on registration-before-parse evaluation order
- Add tests for doJSONRequest retry/exhaust behavior

github/reviews.go

@@ -61,8 +61,6 @@ func translateReviewEvent(event vcs.ReviewEvent) string {
 		return "APPROVE"
 	case vcs.ReviewEventRequestChanges:
 		return "REQUEST_CHANGES"
-	case vcs.ReviewEventComment:
-		return "COMMENT"
 	default:
 		return "COMMENT"
 	}