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/client_test.go

@@ -2,6 +2,7 @@ package github
 
 import (
 	"context"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -592,3 +593,55 @@ func TestSetRetryBackoff_RejectsInvalidLength(t *testing.T) {
 		t.Fatalf("unexpected error for valid backoff: %v", err)
 	}
 }
+
+func TestDoJSONRequest_429Retry(t *testing.T) {
+	attempts := 0
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		attempts++
+		if attempts < 3 {
+			w.WriteHeader(429)
+			w.Write([]byte(`{"message":"rate limit exceeded"}`))
+			return
+		}
+		w.WriteHeader(200)
+		w.Write([]byte(`{"id":1}`))
+	}))
+	defer ts.Close()
+
+	c := NewClient("token", ts.URL, AllowInsecureHTTP())
+	c.SetRetryBackoff([]time.Duration{1 * time.Millisecond, 1 * time.Millisecond})
+
+	body, err := c.doJSONRequest(context.Background(), http.MethodPost, ts.URL+"/test", map[string]string{"key": "val"})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if attempts != 3 {
+		t.Errorf("expected 3 attempts, got %d", attempts)
+	}
+	if string(body) != `{"id":1}` {
+		t.Errorf("unexpected body: %s", body)
+	}
+}
+
+func TestDoJSONRequest_429ExhaustsRetries(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(429)
+		w.Write([]byte(`{"message":"rate limit"}`))
+	}))
+	defer ts.Close()
+
+	c := NewClient("token", ts.URL, AllowInsecureHTTP())
+	c.SetRetryBackoff([]time.Duration{1 * time.Millisecond, 1 * time.Millisecond})
+
+	_, err := c.doJSONRequest(context.Background(), http.MethodPost, ts.URL+"/test", map[string]string{"key": "val"})
+	if err == nil {
+		t.Fatal("expected error after exhausting retries")
+	}
+	var apiErr *APIError
+	if !errors.As(err, &apiErr) {
+		t.Fatalf("expected APIError, got %T: %v", err, err)
+	}
+	if apiErr.StatusCode != 429 {
+		t.Errorf("expected 429, got %d", apiErr.StatusCode)
+	}
+}