Test asset information propagation #8
Description
Add test coverage for asset information propagation magic transformation.
Verify that asset information propagates to asset_milestone and asset_commission tables so years don't need explicit setting.
Reference: README magic transformations - 'Propagates asset information to asset_milestone and asset_commission information so the year doesn't have to be explicitly set.'
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Co-authored-by: Claude Code (claude-sonnet-4-20250514) noreply@anthropic.com