llm 0.32rc2

LLM version 0.32rc2 fixes a dependency issue and introduces two new features: the default AI model is now GPT-5.6 Luna (a newer but slightly more expensive model) instead of GPT-4o mini, and users can switch to cheaper alternatives like GPT-5 nano using simple commands. It also adds a new `llm openai endpoint` command that lets users run prompts and queries against any OpenAI-compatible endpoint (a service that works like OpenAI's API but runs elsewhere) without configuring a model first.