https://berafoot.com/ weekly 1.0 https://berafoot.com/spec/index.json weekly 1.0 https://berafoot.com/spec/agent-guide.json weekly https://berafoot.com/spec/principles.json weekly https://berafoot.com/spec/grammar.json weekly https://berafoot.com/spec/lengths.json weekly https://berafoot.com/spec/tokens.json weekly https://berafoot.com/spec/blocks.json weekly https://berafoot.com/spec/pipeline.json weekly https://berafoot.com/spec/rendering.json weekly https://berafoot.com/spec/PROMPT.md weekly https://berafoot.com/html/index.html weekly