RAG Chatbot with Custom Knowledge Base — Documentation Ingestion & Gap Logging

We need a developer to build a RAG chatbot that uses a custom knowledge base for accurate responses. The project includes ingesting documentation, organizing it into a searchable knowledge base, and logging gaps when the chatbot cannot answer a question. You will also help improve response accuracy and maintain the system over time. Please share relevant experience with chatbot development, knowledge base integration, and documentation workflows.