- Add revenue calculation in GetRevenueAnalytics with active subscription base price aggregation
- Add date range filtering for revenue analytics with StartDate and EndDate support
- Add per-plan revenue, subscription count, and average revenue calculations
- Add error handling with partial result fallback for revenue queries
- Replace mock resource performance with event-based performance
- Replace neutral 50.0 score with MCC-to-region mapping logic in calculateRegionScore
- Add mccToRegion function mapping MCC first digit to region codes (EU, NA, AS, OC, AF, SA)
- Add sameRegionGroup function grouping regions into EMEA, AMER, and APAC clusters
- Add 90.0 score for exact MCC region match, 70.0 for same region group, 30.0 for distant regions
- Add MCC range documentation for Europe (2xx), North America (3xx
- Replace getCurrentTime() calls with id.GetCurrentTime() in pricing_integration.go and pricing_service.go
- Replace generateRuleID() with id.GenerateRuleID() in pricing rule creation
- Replace generateEventID() with id.GenerateEventID() in tenant middleware
- Remove local helper functions: generateRuleID, getCurrentTime, generateEventID, generateRandomString, getCurrentTimestamp
- Remove unused time package imports
- Split profile_handlers.go into profile_handlers_core.go, profile_handlers_management_core.go, and profile_handlers_management_delete.go
- Simplify OrderProfileHandlerWithRepo with ICCID/IMSI-only validation and "downloaded" state
- Remove webhook and message queue notifications from order handler
- Add UpdateProfileHandler with state validation for downloaded/activated/deactivated/expired
- Add DeleteProfileHandler with existence
- Add DefaultManagerConfig with 30s health checks, 3 retries, and circuit breaker configuration
- Add CarrierConfig struct with ES2 settings, MCC/MNC, priority, and feature support
- Add ToCarrier method converting CarrierConfig to Carrier with metrics and capabilities
- Add HealthChecker with periodic carrier health monitoring and status evaluation
- Add LoadBalancer with weighted round-robin, least
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