//! xAI provider (reuses OpenAI Completions protocol).
//!
//! xAI (Grok models) uses the OpenAI Chat Completions API at:
//! - `https://api.x.ai/v1`
//!
//! Compat customizations from pi-mono:
//! - `supports_store: false` (non-standard)
//! - `supports_developer_role: false` (non-standard)
//! - `supports_reasoning_effort: false` (xAI/Grok does not support reasoning_effort)
//! - `thinking_format: "openai"` (standard)
//!
//! This provider delegates to `OpenAICompletionsProvider` with xAI-specific defaults.
use crateAssistantMessageEventStream;
use crate*;
define_openai_delegation_provider!