- Introduced interfaces (IErrorHandler, IRetryStrategy, IStateManager, IRateLimitManager)
- Eliminated circular dependencies with EventBus implementation
- Split UnifiedErrorHandler into focused components following SRP
- Replaced singleton GlobalRateLimitManager with dependency injection
- Decoupled UI updates through event-driven architecture
- Added 129 new tests (3,029 total passing)
- 100% backward compatible - no breaking changes
This refactoring addresses all PR review concerns including module boundary violations,
circular dependencies, and mixed responsibilities while establishing a robust foundation
for future development.
