Refine relevance selection in MedicalAdviceGenerator to clarify intent in chunk selection

Merge branch 'newbranchYB-newest' into Merged20250805

Refactor relevance calculation and update thresholds in latency evaluator; enhance precision and MRR analyzer with angular distance metrics; increase timeout for primary generation in fallback configuration.

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

feat: Simplify fallback architecture and remove length restrictions

Merge branch 'main' into Jeff

fix(MedicalAdviceGenerator): enhance fallback generation with primary result simplification and increased token limits

fix(MedicalAdviceGenerator): update fallback token limits and response guidelines for improved clarity and guidance

fix(llm-clients): relax abnormal response detection threshold for medical advice

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

Merge branch 'main' into Jeff

feat: Implement 3-tier fallback generation mechanism in MedicalAdviceGenerator

Pull newest code from main

refactor: enhance example queries and prompt structure for improved medical guidance clarity

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

feat and fix: update medical advice extraction logic to prioritize raw response

Add end-to-end pipeline test script for OnCall.ai