Audio partagée

Now I have the full picture. The user's pasted code is an "AI corrected" version that makes significant changes beyond what I wrote. Let me do a thorough review of the pasted version versus what's on disk, flagging real issues. Here's my review of the AI-corrected code: --- **DATA.CS - AttachmentTransformFlags rename: Good, but incomplete migration** The enum changed from `SetParent`/`SetTransform` to `AssignParent`/`AlignPosition`/`AlignRotation`/`AlignScale`/`WorldSpaceDerivation`. The old