Permanently removes a specific solar system design from a project.

Business Context:
Use this endpoint to delete designs that are no longer needed, were created
in error, or when project requirements have changed to eliminate specific
design versions.

Common Deletion Scenarios:

• Design Iterations: Removing outdated or superseded design versions
• Error Correction: Deleting designs created with incorrect data
• Project Changes: Removing designs that no longer meet requirements
• Storage Management: Cleaning up unused or duplicate designs
• Workflow Cleanup: Removing draft designs that won't be developed

Important Considerations:

• Permanent Action: Design deletion cannot be undone
• Primary Design Protection: Cannot delete the primary/active design
• Project Impact: Deletion may affect project documentation and history
• Dependencies: Check for related attachments or references before deletion
• Approval Requirements: Some deletions may require manager approval

Business Rules:

• Cannot delete primary designs (must promote another design to primary first)
• Cannot delete designs from finalized or completed projects
• Associated external identifiers and metadata are also removed
• Audit logs maintain record of deletion for compliance

Alternative Actions:

• Consider updating design status instead of deletion for audit trail
• Use design versioning to track evolution rather than deleting old versions
• Mark designs as inactive rather than permanent deletion