ImportSpy v0.4.1

Fixes

• Added validation for environment secrets in SystemValidator.
  In the previous version, validation stopped at regular environment variables and did not check for the presence or match of secrets.
• Introduced new error codes (SCOPE_SECRETS, KEY_SYSTEM_1) to improve handling and reporting of missing secrets.
• Improved exception handling when expected secrets are absent.

Details

• Implemented _secrets_validator to ensure that:
  • All secrets from the source environment are present in the target environment.
  • Missing secrets are properly reported in the error bundle.
• Minor cleanup in tests, removing unused fixtures.