Fix database migration error by adding pydantic-settings dependency

app/core/config.py

@@ -1,15 +1,25 @@
 from pathlib import Path
 
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
+    model_config = SettingsConfigDict(
+        env_file=".env", 
+        env_file_encoding="utf-8", 
+        extra="ignore"
+    )
+    
     API_V1_STR: str = "/api/v1"
     PROJECT_NAME: str = "Todo Application"
     
     # Database settings
-    DB_DIR = Path("/app") / "storage" / "db"
-    DB_DIR.mkdir(parents=True, exist_ok=True)
+    DB_DIR: Path = Path("/app") / "storage" / "db"
     SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"
+    
+    def __init__(self, **data):
+        super().__init__(**data)
+        self.DB_DIR.mkdir(parents=True, exist_ok=True)
+
 
 settings = Settings()

requirements.txt

@@ -2,6 +2,7 @@ fastapi>=0.95.0
 uvicorn>=0.22.0
 sqlalchemy>=2.0.0
 pydantic>=2.0.0
+pydantic-settings>=2.0.0
 python-multipart>=0.0.6
 python-jose[cryptography]>=3.3.0
 alembic>=1.10.0