fix(review): address bot review feedback on PR #106

- Document --gitea-url/--vcs-url last-one-wins behavior when both flags
  are passed simultaneously (sonnet MINOR #1)
- Move doJSONRequest from github/reviews.go to github/client.go where
  other HTTP helpers live (sonnet MINOR #2)
- Return joined error from supersedeOldReviews GitHub case instead of
  silently swallowing DismissReview failures (sonnet MINOR #3)
- Fix evaluateCIStatus to distinguish 'all checks passed' from 'no
  failures (N pending)' to avoid misleading status (gpt MINOR #2)
- Extract reviewsPerPage and maxReviewPages named constants for
  ListReviews pagination (gpt NIT #3)

cmd/review-bot/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"log/slog"
@@ -87,6 +88,9 @@ func main() {
 	// Register --gitea-url as a backward-compatible alias for --vcs-url.
 	// StringVar shares the *string pointer with vcsURL, so whichever flag is
 	// set last by flag.Parse wins — both point to the same underlying value.
+	// NOTE: If a user passes both --vcs-url and --gitea-url, the last one on
+	// the command line takes effect (standard flag package behavior). This is
+	// acceptable since --gitea-url is deprecated and both serve the same purpose.
 	flag.StringVar(vcsURL, "gitea-url", *vcsURL, "Deprecated: use --vcs-url instead")
 
 	flag.Parse()
@@ -528,14 +532,17 @@ func verdictToEvent(verdict string) vcs.ReviewEvent {
 func supersedeOldReviews(ctx context.Context, client vcs.Client, provider, vcsURL, owner, repoName string, prNumber int, oldReviews []vcs.Review, newReviewID int64, sentinel string) error {
 	switch provider {
 	case "github":
+		// Best-effort dismissal: attempt all reviews, join any errors.
+		var errs []error
 		for _, old := range oldReviews {
 			if err := client.DismissReview(ctx, owner, repoName, prNumber, old.ID, "Superseded by new review"); err != nil {
 				slog.Warn("failed to dismiss review", "id", old.ID, "error", err)
+				errs = append(errs, fmt.Errorf("dismiss review %d: %w", old.ID, err))
 			} else {
 				slog.Info("dismissed old review", "review_id", old.ID, "new_review_id", newReviewID, "pr", prNumber)
 			}
 		}
-		return nil
+		return errors.Join(errs...)
 	case "gitea":
 		// Continue to Gitea-specific logic below the switch.
 	default:
@@ -695,18 +702,20 @@ func isPatternFile(path string) bool {
 }
 
 // evaluateCIStatus checks if all CI statuses indicate success.
+// Returns passed=true if no checks have failed (pending checks are not treated as failures).
 func evaluateCIStatus(statuses []vcs.CommitStatus) (passed bool, details string) {
 	if len(statuses) == 0 {
 		return true, "no CI statuses found"
 	}
 
 	var failed []string
+	var pending int
 	for _, s := range statuses {
 		switch s.Status {
 		case "success":
 			// good
 		case "pending":
-			// treat pending as not-failed
+			pending++
 		case "failure", "error":
 			failed = append(failed, fmt.Sprintf("%s: %s", s.Context, s.Description))
 		}
@@ -715,6 +724,9 @@ func evaluateCIStatus(statuses []vcs.CommitStatus) (passed bool, details string)
 	if len(failed) > 0 {
 		return false, strings.Join(failed, "; ")
 	}
+	if pending > 0 {
+		return true, fmt.Sprintf("no failures (%d pending)", pending)
+	}
 	return true, "all checks passed"
 }
 

cmd/review-bot/main_test.go

@@ -593,7 +593,7 @@ func TestEvaluateCIStatus(t *testing.T) {
 				{Status: "success", Context: "ci/test", Description: "Tests passed"},
 			},
 			wantPassed: true,
-			wantSubstr: "all checks passed",
+			wantSubstr: "no failures",
 		},
 		{
 			name: "multiple failures",