Perform a web search using Ollama's hosted search API.
    
    Requires OLLAMA_API_KEY environment variable to be set.

    Args:
        query: The search query to run.
        max_results: Maximum results to return (default: 3, max: 20).

    Returns:
        JSON-serializable dict with search results including titles, URLs, and content snippets.
    

    Fetch the content of a web page for the provided URL.
    
    Requires OLLAMA_API_KEY environment variable to be set.

    Args:
        url: The absolute URL to fetch.

    Returns:
        JSON-serializable dict with page title, content, and links.
    

    Generate a chat completion using Qwen3-coder (cloud preferred, local fallback).

    Args:
        messages: List of message objects with 'role' and 'content' keys.
        model: Optional model override (default: auto-selected best available).
        temperature: Sampling temperature (0.0 to 2.0, default: 0.7).
        max_tokens: Maximum tokens to generate.
        **kwargs: Additional parameters for the chat API.

    Returns:
        JSON-serializable dict with the model response.
    

    Get information about available models and current configuration.

    Returns:
        JSON-serializable dict with model availability information.
    

    Perform web search and then generate a response based on the search results.
    
    This is a convenience tool that combines web_search and chat_completion.
    Requires OLLAMA_API_KEY environment variable to be set for web search.

    Args:
        query: The search query and question to answer.
        search_results: Number of search results to include (default: 3).
        model: Optional model override.
        temperature: Sampling temperature for chat completion.

    Returns:
        JSON-serializable dict with search results and AI response.