feat: grounding in documentation

This would be a tool that searches specifically for relevant documentation when unsure about syntax or arguments.

The models have fairly good knowledge of these but still make mistakes especially for niche packages/languages.

The logic to do this should be similar to what a human would do (a last resort): try using what you remember first, observe errors, fix using what you remember, observe persistent errors, check online, damn still not working, check docs, record the lesson in the memory.