feat:助手首次改版

config/settings.py

@@ -0,0 +1,35 @@
+from functools import lru_cache
+from pathlib import Path
+
+from dotenv import load_dotenv
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+_ROOT_DIR = Path(__file__).resolve().parents[1]
+load_dotenv(_ROOT_DIR / ".env")
+
+
+class Settings(BaseSettings):
+    """运行时与密钥。模型清单见 config/models.yaml。"""
+
+    model_config = SettingsConfigDict(
+        env_file=str(_ROOT_DIR / ".env"),
+        env_file_encoding="utf-8",
+        extra="ignore",
+    )
+
+    deepseek_api_key: str = ""
+    openai_api_key: str = ""
+    host: str = "127.0.0.1"
+    port: int = 8000
+    cors_origins: str = ""
+
+    @property
+    def cors_origin_list(self) -> list[str]:
+        if not self.cors_origins.strip():
+            return []
+        return [o.strip() for o in self.cors_origins.split(",") if o.strip()]
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()