Создана первоначальная структура обращения к языковым моделям

llm/config.py

@@ -0,0 +1,39 @@
+from pathlib import Path
+from typing import Annotated, Literal
+
+import yaml
+from pydantic import BaseModel, Field
+
+
+class CodexConfig(BaseModel):
+    provider: Literal["codex"]
+    model: str = "gpt-5.6-luna"
+
+    credential_path: Path | None = None
+
+
+class OpenAiConfig(BaseModel):
+    provider: Literal["openai"]
+    model: str
+
+    api_key_env: str = "API_KEY"
+    base_url_env: str = "BASE_URL"
+
+
+LLMConfig = Annotated[
+    CodexConfig | OpenAiConfig,
+    Field(discriminator="provider")
+]
+
+
+class AppConfig(BaseModel):
+    llm: LLMConfig
+
+
+def load_config(path: str | Path = "config.yaml") -> AppConfig:
+    path = Path(path)
+
+    with path.open("r", encoding="utf-8") as file:
+        data = yaml.safe_load(file)
+
+    return AppConfig.model_validate(data)