Delete the ModelMetadata half field that only mirrored quantize

[onuralpszr]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Removed the redundant ModelMetadata::half field and its synchronization logic, keeping quantize as the sole precision metadata representation.

📊 Key Changes

• Deleted the hidden half: bool field from ModelMetadata.
• Removed initialization of half in Default and assignment during YAML metadata parsing.
• Updated precision compatibility tests to validate only quantize.
• Preserved parsing behavior for legacy half metadata by mapping it to Quantization::Fp16 when applicable.

🎯 Purpose & Impact

• Simplifies ModelMetadata by eliminating a field that duplicated quantize.
• Existing metadata parsing continues to determine precision through quantize; consumers can no longer access the removed half field.

[UltralyticsAssistant]

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[UltralyticsAssistant]

🔍 PR Review

_{Made with ❤️ by Ultralytics Actions}

LGTM. The diff cleanly removes the redundant public ModelMetadata::half field, preserves legacy YAML half parsing through quantize, updates the default initializer, and adjusts the precision compatibility tests. No remaining repository references to ModelMetadata::half were found.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[UltralyticsAssistant]

🎉 PR #471 has been merged—thank you, @onuralpszr!

“Simple can be harder than complex.” — Steve Jobs

This change simplifies ModelMetadata by removing the redundant half field and keeping quantize as the sole precision representation, while preserving legacy half metadata parsing through Quantization::Fp16.