feat(core,cli): enforce mandatory MessageBus injection (Phase 3 Hard Migration) (#15776)

packages/core/src/tools/write-file.ts

@@ -149,7 +149,7 @@ class WriteFileToolInvocation extends BaseToolInvocation<
   constructor(
     private readonly config: Config,
     params: WriteFileToolParams,
-    messageBus?: MessageBus,
+    messageBus: MessageBus,
     toolName?: string,
     displayName?: string,
   ) {
@@ -409,7 +409,7 @@ export class WriteFileTool
 
   constructor(
     private readonly config: Config,
-    messageBus?: MessageBus,
+    messageBus: MessageBus,
   ) {
     super(
       WriteFileTool.Name,
@@ -432,9 +432,9 @@ export class WriteFileTool
         required: ['file_path', 'content'],
         type: 'object',
       },
+      messageBus,
       true,
       false,
-      messageBus,
     );
   }
 
@@ -475,7 +475,7 @@ export class WriteFileTool
 
   protected createInvocation(
     params: WriteFileToolParams,
-    messageBus?: MessageBus,
+    messageBus: MessageBus,
   ): ToolInvocation<WriteFileToolParams, ToolResult> {
     return new WriteFileToolInvocation(
       this.config,