Implement CreatorAnalyticsService with:
- GetCreatorDashboard: aggregated plays, listeners, revenue (F381)
- GetPlayEvolution: temporal data by day/week/month (F382)
- GetSalesSummary: revenue and sales history (F383)
- GetDiscoverySources: how listeners find tracks (F381)
- GetGeographicBreakdown: anonymized geographic data (F381)
- GetAudienceProfile: aggregated audience demographics, min 10 users (F384)
- GetLiveStreamMetrics: real-time viewer count (F385)
- GetPerTrackStats: per-track analytics with pagination
All data is private to the creator, never exposed publicly.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
