error analysis , Retrieval-augmented generation (RAG, Local large language model (LLM systems, Python, Sql, Linux, Pytorch, Git, Regression Testing, Docker, Apis, Human-review workflows, NLP analytics, Vector databases, Hugging Face, Access Control, Output provenance, LoRA, Model isolation, Security robustness testing, Model fine-tuning, Performance optimization, Backend APIs, Audit logging, Traceable retrieval, GPU deployment, Containerized deployment