Added additional embedding models to the list

Customizon on chunking stratergy

Refactored Truthfulness and Evalpipeline

Refactor Eval pipeline

Added api key ingestion

fix(ci): satisfy ESLint and Ruff checks

feat: React UI, Docker Space, sessions, Ollama toggle on HF

fix: define redis availability guard in API limiter

Merge branch 'main' into claude/reverent-einstein-d9c1a3

fix: make redis optional and use sentence-transformers for embeddings on Spaces

chore(ci): fix Ruff lint and Mypy for GitHub Actions

feat: add onboarding, HF Spaces demo, and truthfulness evaluation

feat: add API orchestration and citation-aware RAG flow