Refactor PluginDefinition: Remove ModularAvatarContext and minimize shim passes#1911

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Copilot wants to merge 12 commits intomainfrom

copilot/refactor-plugindefinition-shim-classes

Commits on Feb 8, 2026

Initial plan
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Convert BuildContext to IExtensionContext and remove ModularAvatarContext

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Convert MeshSettingsPass to Pass subclass and remove shim

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Convert VRChat delegate classes to Pass subclasses and remove shims

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Convert MergeArmatureHook, ReplaceObjectPass, and RebindHumanoidAvatar to Pass subclasses

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Convert VRChat-specific delegates to Pass subclasses with GetState pattern

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Add comment to clarify OnPreprocessAvatar visibility for testing

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Convert PhysboneBlockerPass to Pass subclass and remove MAPass helper

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Address code review feedback: fix parameter naming and GameObjects method signature

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Add documentation to clarify constructor usage and test patterns

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Apply review feedback: revert to shim pattern for MeshSettings, BlendshapeSync, VisibleHeadAccessory, and GCGameObjects passes

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Address review feedback: remove BuildContext extension requirement, move shim passes to nested classes, use ndmf.BuildContext directly where appropriate

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bdunderscore
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