feat(sdk): migrate to EventBus 2.0

Replace the legacy EventBase runtime with generated multi-bus bindings and explicit scheduling. Migrate app, data, network, demo, and mod consumers; add generated network-event registration and owner-scoped mod content overrides.

Assets/Modules/ShrinkApp.Core/Runtime/ShrinkAppHost.cs

@@ -54,7 +54,7 @@ namespace ShrinkApp
             {
                 HasFailed = true;
                 LastError = ex.Message;
-                EventBus.TriggerEvent(new ShrinkAppStartFailedEvent
+                EventBus.Post(new ShrinkAppStartFailedEvent
                 {
                     ErrorMessage = ex.Message,
                     FailedModuleId = _startedModules.LastOrDefault() ?? string.Empty
@@ -75,7 +75,7 @@ namespace ShrinkApp
                 return;
 
             _publishedStartedEvent = true;
-            EventBus.TriggerEvent(new ShrinkAppStartedEvent
+            EventBus.Post(new ShrinkAppStartedEvent
             {
                 ModuleIds = _startedModules.ToArray()
             });

Assets/Modules/ShrinkApp.Core/Runtime/ShrinkAppTypes.cs

@@ -168,12 +168,12 @@ namespace ShrinkApp
         public ShrinkAppHostingMode hostingMode = ShrinkAppHostingMode.ClassicHost;
     }
 
-    public sealed class ShrinkAppStartedEvent : EventBase
+    public sealed class ShrinkAppStartedEvent : IShrinkEvent
     {
         public IReadOnlyList<string> ModuleIds { get; set; } = Array.Empty<string>();
     }
 
-    public sealed class ShrinkAppStartFailedEvent : EventBase
+    public sealed class ShrinkAppStartFailedEvent : IShrinkEvent
     {
         public string ErrorMessage { get; set; } = string.Empty;
         public string FailedModuleId { get; set; } = string.Empty;