2cd976ff96
- Replace custom XML-based tool parsing (XMLToolExecutor) with OpenAI SDK's native tool_calls via `openai` npm package (dangerouslyAllowBrowser) - Consolidate 4 LLM providers (OpenAI, Claude, Gemini, ClaudeOpenRouter) into a single OpenAI SDK-based LLMProvider compatible with any OpenAI-style API (OpenAI, OpenRouter, Ollama, vLLM) - Move agentic tool execution loop from ChatBox into AgentCore - Update Message type to support tool roles, tool_calls, and tool_call_id - Update system prompt to remove XML formatting instructions (~45% smaller) - Remove AttemptCompletionTool (replaced by stop_reason detection), ThinkTool, and ThinkingTool - Polish tool descriptions for OpenAI function calling schema compliance - Normalize base URLs by stripping /chat/completions suffix