task: add real estate story

config/settings.py

@@ -0,0 +1,34 @@
+from pydantic_settings import BaseSettings
+from pydantic import Field
+from config.env_loader import load_env
+
+# 先加载 ENV & .env
+load_env()
+
+class Settings(BaseSettings):
+    # 环境
+    ENV: str = Field("dev")
+    DEBUG: bool = Field(True)
+
+    # 日志
+    LOG_LEVEL: str = Field("LOG_LEVEL")
+    LOG_FILE_PATH: str = Field("logs")
+    LOG_TYPE: str = Field("console")
+
+    # 数据库
+    DB_HOST: str
+    DB_PORT: int
+    DB_USER: str
+    DB_PASS: str
+    DB_NAME: str
+
+    # LLM配置
+    LLM_API_KEY: str = Field("LLM_API_KEY")
+
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+
+
+# 全局唯一配置实例
+settings = Settings()