Remove generate_mapping_json.py script as it is no longer needed for the customization pipeline

Update deployment documentation and implement cloud data loading for customization pipeline

WIP: Remove obsolete files and implement cloud data loading for customization and retrieval systems

feat(app): add multi-mode retrieval system with critical bug fixes

fix(customization): implement anti-hallucination filtering with Top-P sampling and similarity thresholds

feat(integration): integrate hospital customization pipeline with main RAG system

feat: implement hospital-specific customization pipeline with two-stage ANNOY retrieval