fix until the canvas sort of works

backend/app/core/config.py

@@ -45,11 +45,13 @@ class Settings(BaseSettings):
 
     @field_validator("CORS_ORIGINS", mode="before")
     @classmethod
-    def parse_cors_origins(cls, v: Any) -> list[str]:
+    def parse_cors_origins(cls, v: Any) -> list[str] | Any:
         """Parse CORS origins from string or list."""
         if isinstance(v, str):
             return [origin.strip() for origin in v.split(",")]
-        return v
+        if isinstance(v, list):
+            return v
+        return ["http://localhost:5173", "http://localhost:3000"]
 
     # File Upload
     MAX_FILE_SIZE: int = 52428800  # 50MB