fix: implement exportTaskWithId and fix openDiskConversationHistory

- Replace exportTaskWithId stub in SdkController with real implementation
  that opens the task directory in the file manager (matching classic behavior)
- Fix openDiskConversationHistory to await openFileIntegration and move
  path construction inside the null check

Closes ENG-1828

src/core/controller/file/openDiskConversationHistory.ts

@@ -4,16 +4,16 @@ import path from "path"
 import { HostProvider } from "@/hosts/host-provider"
 import { Controller } from ".."
 /**
- * Opens a file in the editor
+ * Opens the api_conversation_history.json file for a task in the editor
  * @param controller The controller instance
- * @param request The request message containing the file path in the 'value' field
+ * @param request The request message containing the task ID in the 'value' field
  * @returns Empty response
  */
 export async function openDiskConversationHistory(_controller: Controller, request: StringRequest): Promise<Empty> {
-	const globalStoragePath = HostProvider.get().globalStorageFsPath
-	const taskConversationHistoryPath = path.join(globalStoragePath, "tasks", request.value, "api_conversation_history.json")
 	if (request.value) {
-		openFileIntegration(taskConversationHistoryPath)
+		const globalStoragePath = HostProvider.get().globalStorageFsPath
+		const taskConversationHistoryPath = path.join(globalStoragePath, "tasks", request.value, "api_conversation_history.json")
+		await openFileIntegration(taskConversationHistoryPath)
 	}
 	return Empty.create()
 }

src/sdk/SdkController.ts

@@ -617,8 +617,11 @@ export class Controller {
 		return this.taskHistory.getTaskWithId(id)
 	}
 
-	async exportTaskWithId(_id: string): Promise<void> {
-		stubWarn("exportTaskWithId")
+	async exportTaskWithId(id: string): Promise<void> {
+		const taskDirPath = path.join(HostProvider.get().globalStorageFsPath, "tasks", id)
+		Logger.log(`[EXPORT] Opening task directory: ${taskDirPath}`)
+		const open = (await import("open")).default
+		await open(taskDirPath)
 	}
 
 	async deleteTaskFromState(id: string): Promise<HistoryItem[]> {