Data Validation Enhancements

[leogdion]

Parent Issue for Data Validation Improvements

This parent issue groups together validation enhancements across different data structures to improve data integrity and prevent runtime errors.

Child Issues:

• Add CloudKit record name validation to DataSourceMetadata #133 - Add CloudKit record name validation to DataSourceMetadata
• Add validation to RestoreImageRecord #124 - Add validation to RestoreImageRecord
• Remove Default Value from Int and Add Parameter for Explicit Default #117 - Remove Default Value from Int and Add Parameter for Explicit Default

Scope:

1. Add CloudKit record name validation to ensure ASCII-only, max 255 characters
2. Add validation logic to RestoreImageRecord for data integrity
3. Improve EnvironmentProperty integer handling with explicit defaults

Branch: feat/data-validation

Priority: MEDIUM