One-to-many asset processing#21889

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andriyDev wants to merge 16 commits intobevyengine:mainfrom

andriyDev:one-to-many

Commits on Nov 21, 2025

Create a test to ensure that we actually gate on file transactions.
andriyDev
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Implement one-to-many asset processing.
andriyDev
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Add a test for one-to-many asset processing.
andriyDev
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Update the "wrong_hash" test to also check that one-to-many asset processing doesn't rerun if nothing has changed.
andriyDev
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Update the `gates_asset_path_on_process` test to also include a "multi" asset.
andriyDev
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Use let-else for initializing the asset processor.
andriyDev
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Delete the meta file of empty folders to make sure we don't keep around "ghost meta files".
andriyDev
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Treat any directory with a meta file as an asset path for processed assets.
andriyDev
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Delete processed assets (or multi-processed-assets) before processing an asset to prevent failing to process.
andriyDev
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Recursively look for processor asset infos to block on multi-processed-assets.
andriyDev
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Create a migration guide for Process trait changes.
andriyDev
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Create release notes for one-to-many asset processing.
andriyDev
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Update the asset processing example to show that we can do one-to-many asset processing.
andriyDev
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Add some checks to verify the behavior of some error cases for invalid processors.
andriyDev
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Update some doc comment wording and release note wording.
andriyDev
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Rename write_single and write_multiple to write_full and write_partial respectively.
andriyDev
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