feat(core): Introduce message bus for tool execution confirmation (#11544)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

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

@@ -42,6 +42,7 @@ import { FileOperationEvent } from '../telemetry/types.js';
 import { FileOperation } from '../telemetry/metrics.js';
 import { getSpecificMimeType } from '../utils/fileUtils.js';
 import { getLanguageFromFilePath } from '../utils/language-detection.js';
+import type { MessageBus } from '../confirmation-bus/message-bus.js';
 
 /**
  * Parameters for the WriteFile tool
@@ -144,8 +145,11 @@ class WriteFileToolInvocation extends BaseToolInvocation<
   constructor(
     private readonly config: Config,
     params: WriteFileToolParams,
+    messageBus?: MessageBus,
+    toolName?: string,
+    displayName?: string,
   ) {
-    super(params);
+    super(params, messageBus, toolName, displayName);
   }
 
   override toolLocations(): ToolLocation[] {
@@ -160,7 +164,7 @@ class WriteFileToolInvocation extends BaseToolInvocation<
     return `Writing to ${shortenPath(relativePath)}`;
   }
 
-  override async shouldConfirmExecute(
+  protected override async getConfirmationDetails(
     abortSignal: AbortSignal,
   ): Promise<ToolCallConfirmationDetails | false> {
     if (this.config.getApprovalMode() === ApprovalMode.AUTO_EDIT) {
@@ -392,7 +396,10 @@ export class WriteFileTool
 {
   static readonly Name = WRITE_FILE_TOOL_NAME;
 
-  constructor(private readonly config: Config) {
+  constructor(
+    private readonly config: Config,
+    messageBus?: MessageBus,
+  ) {
     super(
       WriteFileTool.Name,
       'WriteFile',
@@ -415,6 +422,9 @@ export class WriteFileTool
         required: ['file_path', 'content'],
         type: 'object',
       },
+      true,
+      false,
+      messageBus,
     );
   }
 
@@ -458,7 +468,13 @@ export class WriteFileTool
   protected createInvocation(
     params: WriteFileToolParams,
   ): ToolInvocation<WriteFileToolParams, ToolResult> {
-    return new WriteFileToolInvocation(this.config, params);
+    return new WriteFileToolInvocation(
+      this.config,
+      params,
+      this.messageBus,
+      this.name,
+      this.displayName,
+    );
   }
 
   getModifyContext(