处理环境配置位置问题

app/config/settings.py

@@ -1,5 +1,10 @@
+from pathlib import Path
+
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
+# 项目根目录：settings.py -> config -> app -> <project root>
+BASE_DIR = Path(__file__).resolve().parents[2]
+
 
 class Settings(BaseSettings):
     # 环境
@@ -71,7 +76,7 @@ class Settings(BaseSettings):
         return f"redis://{self.redis_host}:{self.redis_port}/{self.redis_db}"
 
     model_config = SettingsConfigDict(
-        env_file=".env",
+        env_file=BASE_DIR / ".env",
         env_file_encoding="utf-8",
         case_sensitive=False,
         extra="ignore",