AI coding assistants typically lack persistent memory, starting each interaction from scratch. Heimdall solves this by giving large language models (LLMs) a growing, cognitive memory tailored to your specific codebase. It indexes project documentation and a comprehensive git history, allowing the LLM to recall precise solutions, architectural patterns, and development insights over time. This system ensures that valuable lessons and context from past sessions are retained, significantly enhancing the assistant's effectiveness and reducing repetitive context provision.