Release: llm-openrouter 0.7

Now that this plugin is compatible with LLM 0.32 it can display the reasoning traces for LLMs available through OpenRouter.

• Updated for compatibility with LLM 0.32.
• Models now use OpenRouter's implementation of the Responses API.
• Three new server-side tools: Shell, WebFetch, and WebSearch. Enable these with options like -T WebSearch.