import type { LLMProvider } from "./types";
/**
 * Provider factory. Selects provider based on env:
 * - PROVIDER: openai | deepseek | any OpenAI-compatible
 * - LLM_BASE_URL to override API host (e.g., DeepSeek)
 * - API key via api_key_llm | OPENAI_API_KEY | DEEPSEEK_API_KEY
 */
export declare function createProvider(): LLMProvider | null;
export declare const globalLLMProvider: LLMProvider | null;
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