Remove obsolete phase completion summaries and demo test scripts - Deleted `PHASE1_COMPLETION_SUMMARY.md`, `PHASE2_COMPLETION_SUMMARY.md`, `PHASE3_COMPLETION_SUMMARY.md`, and associated demo test scripts to streamline the codebase and eliminate unused documentation. This cleanup supports ongoing refactoring efforts and enhances overall project maintainability.

Enhance intent management and context handling in the recommendation system - Introduced `SessionManagerService` and `IntentOrchestrationService` to centralize intent processing and improve follow-up query handling. Refactored `EnhancedRecommendationService` to integrate these new services, ensuring agents receive a clear "effective intent" for better decision-making. Updated scoring logic in `ComprehensiveQualityScorer` for improved robustness. This update aims to streamline agent logic, enhance user experience with follow-ups, and support ongoing refactoring efforts.

Remove obsolete test scripts for follow-up behavior, detection fix, history filtering, hybrid context, Kendrick follow-up, simple extraction, and state management - Deleted multiple test files to streamline the codebase and eliminate unused tests. This cleanup supports ongoing refactoring efforts and enhances overall project maintainability.