Track Unity Fusion CodeGen AssetDatabase path error during Play Mode smoke

[JOY]

Unity 6000.5.0b7 Play Mode smoke in ZoneTest_Hub currently gets stuck in play-mode transition and the console reports:\n\n- Invalid AssetDatabase path: /Projects/Second-Spawn/Unity/Assets/Photon/Fusion/CodeGen/Fusion.CodeGen.cs. Use path relative to the project folder.\n- Fusion.CodeGen.ILWeaverBindings warning about UnityEditor.iOS.Extensions.Xcode already referenced.\n- Repeated invalid GC handle/domain reload assertions after stopping the stuck play-mode transition.\n\nThis appears to be in the Photon Fusion editor/codegen path rather than the Nakama profile bootstrap patch. Keep it separate from gameplay/backend feature branches because Photon vendor package edits need a focused compatibility pass.

[JOY]

Retested after Unity recovered and PR #8 delta fix:

• The gateway-side unknown field "agent_runtime" error from Unity Play Mode is fixed in PR feat(nakama): persist agent runtime activity #8.
• The remaining Play Mode smoke blocker is still this Fusion/editor issue: FusionPluginProjectSettings:ScriptsReloaded () : AssertException: attribute != null, followed by repeated invalid GC handle assertions.
• Keep this issue focused on Photon Fusion / Unity 6.5 beta editor compatibility, not Nakama profile bootstrap.