Seed: Minimal, self-modifying agent harness

Seed is a minimal AI agent framework consisting of a single small loop (seed.py) that connects a language model to a bash execution tool, with everything else—tools, memory, and skills—grown by the agent itself into a self-directed directory. Users can initialize agents locally and interact with them through a REPL, with all sessions recorded and the agent able to modify its own system prompt and capabilities over time. The framework supports multiple language models including OpenAI, Anthropic, and Gemini, with each initialized agent potentially diverging based on its unique experiences.