fix comments

Author: jiashengguo

packages/schema/src/vscode-telemetry.ts

@@ -1,6 +1,6 @@
 import { init, Mixpanel } from 'mixpanel';
 import * as os from 'os';
-import vscode from 'vscode';
+import * as vscode from 'vscode';
 import { getMachineId } from './utils/machine-id-utils';
 import { v5 as uuidv5 } from 'uuid';
 import { TELEMETRY_TRACKING_TOKEN } from './constants';
@@ -36,6 +36,7 @@ export class VSCodeTelemetry {
 
     private getDeviceId() {
         const hostId = getMachineId();
+        // namespace UUID for generating UUIDv5 from DNS 'zenstack.dev'
         return uuidv5(hostId, '133cac15-3efb-50fa-b5fc-4b90e441e563');
     }
 

packages/schema/src/zmodel-preview.ts

@@ -50,16 +50,18 @@ export class ZModelPreview implements vscode.Disposable {
     initialize(context: vscode.ExtensionContext): void {
         this.registerCommands(context);
 
-        vscode.window.tabGroups.onDidChangeTabs(() => {
-            const activeTabLabels = vscode.window.tabGroups.all.filter((group) =>
-                group.activeTab?.label?.endsWith(this.previewZModelFileName)
-            );
-            if (activeTabLabels.length > 0) {
-                vscode.commands.executeCommand('setContext', 'zenstack.isMarkdownPreview', true);
-            } else {
-                vscode.commands.executeCommand('setContext', 'zenstack.isMarkdownPreview', false);
-            }
-        });
+        context.subscriptions.push(
+            vscode.window.tabGroups.onDidChangeTabs(() => {
+                const activeTabLabels = vscode.window.tabGroups.all.filter((group) =>
+                    group.activeTab?.label?.endsWith(this.previewZModelFileName)
+                );
+                if (activeTabLabels.length > 0) {
+                    vscode.commands.executeCommand('setContext', 'zenstack.isMarkdownPreview', true);
+                } else {
+                    vscode.commands.executeCommand('setContext', 'zenstack.isMarkdownPreview', false);
+                }
+            })
+        );
     }
 
     /**