a09e3df2204b56f23ce83e5e25a75f9041770e35
- Updated the save manager to enforce a new format version (2) and improved validation checks for the save data structure. - Enhanced the `validate_data` function to ensure all required fields are present and valid. - Adjusted the handling of legacy saves and introduced new checks for various state fields. - Improved number formatting in the global script for better readability of large numbers. - Updated tests to reflect changes in the save manager and validation logic, ensuring compatibility with the new state structure. - Added new tests for group indexing and production transactions to ensure correctness of entity management and resource production.
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