chore: init monorepo snapshot

wolai-backend/app/config.py

@@ -0,0 +1,25 @@
+from functools import lru_cache
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    """集中管理项目配置，来源于 .env / 环境变量。"""
+
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    supabase_url: str
+    supabase_service_role_key: str
+    redis_url: str = "redis://localhost:6379/0"
+    frontend_url: str = "http://localhost:3000"
+    openai_api_key: str = ""
+    lightrag_db_url: str
+    lightrag_collection: str = "wolai-docs"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    """惰性实例化设置，避免重复读取文件。"""
+    return Settings()
+
+
+settings = get_settings()