feat: Add cache-busting to avatar image URLs and implement show more/less functionality for certifications.

src/app/(user)/user/profile/[id]/page.tsx

@@ -158,7 +158,14 @@ export default function AgentProfileView() {
         if (profile.avatar && isS3Key(profile.avatar)) {
           try {
             const presignedUrl = await uploadService.getPresignedDownloadUrl(profile.avatar);
-            setAvatarUrl(presignedUrl);
+            // Add cache-busting parameter to force browser to fetch fresh image
+            // This prevents showing old cached image when avatar is updated
+            const profileWithTimestamp = profile as unknown as { updatedAt?: string };
+            const cacheBuster = profileWithTimestamp.updatedAt
+              ? new Date(profileWithTimestamp.updatedAt).getTime()
+              : Date.now();
+            const urlWithCacheBuster = `${presignedUrl}&_t=${cacheBuster}`;
+            setAvatarUrl(urlWithCacheBuster);
           } catch (avatarErr) {
             console.error('Failed to get avatar URL:', avatarErr);
             // Don't fail the whole page, just use default image