Merge pull request 'fix: auto repair bugs #49' (#1) from fix/auto-20260226-103348 into main

Merge PR #1 (approved via Log Center)

web/src/pages/BugDetail.tsx

@@ -284,12 +284,12 @@ export default function BugDetail() {
                             <span style={{ fontSize: '14px' }}>
                                 PR #{bug.pr_number} | {bug.branch_name || 'fix branch'}
                             </span>
-                            <a href={bug.pr_url} target="_blank" rel="noopener noreferrer" className="btn-link" style={{ display: 'inline-flex', alignItems: 'center', gap: '4px' }}>
+                            <a href={bug.pr_url || undefined} target="_blank" rel="noopener noreferrer" className="btn-link" style={{ display: 'inline-flex', alignItems: 'center', gap: '4px' }}>
                                 查看 PR <ExternalLink size={12} />
                             </a>
-                            {bug.rejection_count > 0 && (
+                            {((bug.rejection_count ?? 0) > 0) && (
                                 <span style={{ fontSize: '13px', color: 'var(--warning)' }}>
-                                    已拒绝 {bug.rejection_count} 次
+                                    已拒绝 {bug.rejection_count ?? 0} 次
                                 </span>
                             )}
                         </div>