fix(browser): transform maxResults to max_results for WebSearch API

[abdelhadi703]

Summary

The WebSearchRequest interface uses camelCase (maxResults), but the Ollama /api/web_search endpoint expects snake_case (max_results). The spread operator was passing the wrong parameter name.

Problem

// Interface
export interface WebSearchRequest {
  query: string
  maxResults?: number  // camelCase
}

// API expects
POST /api/web_search { "query": "...", "max_results": 10 }  // snake_case

The previous code used { ...request } which sent maxResults instead of max_results.

Solution

Explicitly map the request parameters to the correct API parameter names:

const apiRequest: Record<string, unknown> = {
  query: request.query,
}
if (request.maxResults !== undefined) {
  apiRequest.max_results = request.maxResults
}

Fixes #283