- Add InternalTeamStatisticsController in referral-service for service-to-service API
- Create ReferralServiceClient in authorization-service to fetch real team statistics
- Replace MockTeamStatisticsRepository with real HTTP client implementation
- Configure docker-compose with REFERRAL_SERVICE_URL for authorization-service
This enables authorization-service to get real team planting counts from
referral-service for authorization assessment and activation logic.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>