fix ai variants in updates page

Author: sw33tLie

pkg/storage/storage.go

@@ -799,6 +799,35 @@ func (d *DB) UpsertProgramEntries(ctx context.Context, programURL, platform, han
 		}
 	}
 
+	// Deduplicate AI variant changes: when the same AI-normalized value appears as a
+	// variant on multiple raw targets, each generates a change entry. We keep only one
+	// change per unique (TargetAINormalized, Category, ChangeType) to avoid duplicate
+	// entries in the updates feed.
+	if len(changes) > 0 {
+		type aiChangeKey struct {
+			aiNormalized string
+			category     string
+			changeType   string
+		}
+		seen := make(map[aiChangeKey]bool)
+		deduped := make([]Change, 0, len(changes))
+		for _, c := range changes {
+			if c.TargetAINormalized != "" {
+				k := aiChangeKey{
+					aiNormalized: strings.ToLower(c.TargetAINormalized),
+					category:     strings.ToLower(c.Category),
+					changeType:   c.ChangeType,
+				}
+				if seen[k] {
+					continue
+				}
+				seen[k] = true
+			}
+			deduped = append(deduped, c)
+		}
+		changes = deduped
+	}
+
 	return changes, nil
 }