fix: prevent parent tasks from auto-starting during recursive restoration

When restoring subtasks after VS Code restart, parent tasks were being
recursively restored but inadvertently started execution due to missing
startTask parameter. This caused parent tasks to interfere with child
task execution.

Solution:
- Added optional startTask parameter to createTaskWithHistoryItem (defaults to true)
- Pass startTask: false when recursively restoring parent tasks
- Parent tasks now exist in memory for reference only without starting execution

This ensures subtasks can properly complete and report back to parent
tasks after VS Code restarts.

src/core/webview/ClineProvider.ts

@@ -859,6 +859,7 @@ export class ClineProvider
 
 	public async createTaskWithHistoryItem(
 		historyItem: HistoryItem & { rootTask?: Task; parentTask?: Task },
+		startTask: boolean = true,
 	): Promise<Task> {
 		await this.removeClineFromStack()
 
@@ -919,7 +920,8 @@ export class ClineProvider
 				try {
 					const { historyItem: parentHistoryItem } = await this.getTaskWithId(historyItem.parentTaskId)
 					// Recursively restore parent task (which may have its own parent)
-					restoredParentTask = await this.createTaskWithHistoryItem(parentHistoryItem)
+					// Pass startTask: false to prevent the parent from automatically starting execution
+					restoredParentTask = await this.createTaskWithHistoryItem(parentHistoryItem, false)
 				} catch (error) {
 					this.log(
 						`Failed to restore parent task ${historyItem.parentTaskId}: ${error instanceof Error ? error.message : String(error)}`,
@@ -966,6 +968,7 @@ export class ClineProvider
 			workspacePath: historyItem.workspace,
 			onCreated: this.taskCreationCallback,
 			enableBridge: BridgeOrchestrator.isEnabled(cloudUserInfo, taskSyncEnabled),
+			startTask,
 		})
 
 		await this.addClineToStack(task)