fix: react-doctor unused-export 141→~80 (remove dead exports, enums/marketing unused, inline campaignStatusEnum)

src/lib/feature-flags.ts

@@ -114,7 +114,7 @@ export const ADDON_CATALOG: Record<BrandFeatureKey, BrandFeature> = {
 };
 
 // Core features that cannot be disabled
-export const CORE_FEATURES: BrandFeatureKey[] = [
+const CORE_FEATURES: BrandFeatureKey[] = [
   // Core platform features (always enabled)
   // These are not add-ons — the platform doesn't function without them
 ];
@@ -197,6 +197,6 @@ async function fetchBrandFeatures(
 /**
  * Invalidate cached features for a brand (call after feature toggle).
  */
-export function invalidateBrandFeatureCache(brandId: string): void {
+function invalidateBrandFeatureCache(brandId: string): void {
   brandFeatureCache.delete(brandId);
 }