Unified Interface for Large Language Model Interactions // Provides a unified interface for interacting with Large Language Models (LLMs) through various providers including OpenAI https://platform.openai.com/docs/api-reference, Ollama https://ollama.com/, and other OpenAI-compatible APIs. Features include automatic connection testing, max_tokens limit auto- adjustment, structured JSON responses with schema validation, interactive JSON schema generation, prompt templating, and comprehensive diagnostics.