feat: integrate AI growth analyst experience

src/lib/growth-report-state.ts

@@ -0,0 +1,11 @@
+export type GrowthDisplayMode = 'loading' | 'content' | 'error';
+
+export function reportDisplayMode(
+  status: string | undefined,
+  hasCurrentEvidence: boolean,
+  hasPreviousEvidence: boolean,
+): GrowthDisplayMode {
+  if (hasCurrentEvidence || hasPreviousEvidence) return 'content';
+  if (status === 'QUEUED' || status === 'ANALYZING' || status === 'GENERATING') return 'loading';
+  return 'error';
+}