feat: Integrate query_rag_pipeline into dashboard and cleanup

fix: resolve merge conflicts and correct app startup errors

Merge feature/hf-deployment into master

fixed indexing error, added instruction prompt to model, updated vector db creation, added input rails, made output correctness rail less strict, adapted output on failed output guardrails, added missing requirements

fixed language check and hallu check, added language check to input rails, fixed email sanitize, removed dummy relevance score, refactorings, fixed requirements for installments, refactored model initialization, adapted CLI output

fix: Use /tmp for vector store to resolve permission issues

fix: Use absolute paths for ChromaDB

feat: Implement retriever and guardrail modules