feat: add toolProtocol property to PostHog tool usage telemetry

Author: roomote

packages/telemetry/src/TelemetryService.ts

@@ -98,8 +98,8 @@ export class TelemetryService {
 		this.captureEvent(TelemetryEventName.MODE_SWITCH, { taskId, newMode })
 	}
 
-	public captureToolUsage(taskId: string, tool: string): void {
-		this.captureEvent(TelemetryEventName.TOOL_USED, { taskId, tool })
+	public captureToolUsage(taskId: string, tool: string, toolProtocol?: string): void {
+		this.captureEvent(TelemetryEventName.TOOL_USED, { taskId, tool, toolProtocol })
 	}
 
 	public captureCheckpointCreated(taskId: string): void {

src/core/assistant-message/presentAssistantMessage.ts

@@ -430,7 +430,10 @@ export async function presentAssistantMessage(cline: Task) {
 
 			if (!block.partial) {
 				cline.recordToolUsage(block.name)
-				TelemetryService.instance.captureToolUsage(cline.taskId, block.name)
+				// Determine protocol: native if tool has an ID, otherwise XML
+				const toolCallId = (block as any).id
+				const toolProtocol = toolCallId ? "native" : "xml"
+				TelemetryService.instance.captureToolUsage(cline.taskId, block.name, toolProtocol)
 			}
 
 			// Validate tool use before execution.