Fix the welcome message title

package.json

@@ -54,7 +54,7 @@
         "watch:labextension": "jupyter-builder watch ."
     },
     "dependencies": {
-        "@jupyter/chat": "^0.22.1",
+        "@jupyter/chat": "^0.25.1",
         "@jupyterlab/application": "^4.0.0",
         "@jupyterlab/cells": "^4.0.0",
         "@jupyterlab/coreutils": "^6.0.0",
@@ -68,7 +68,7 @@
     },
     "devDependencies": {
         "@eslint/js": "^9.0.0",
-        "@jupyter/builder": "^1.0.0",
+        "@jupyter/builder": "^1.2.0",
         "@jupyter/eslint-plugin": "^0.0.5",
         "@jupyterlab/testutils": "^4.0.0",
         "@types/jest": "^29.2.0",

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["hatchling>=1.5.0", "hatch-nodejs-version>=0.3.2", "jupyter-builder>=1.0.0,<2"]
+requires = ["hatchling>=1.5.0", "hatch-nodejs-version>=0.3.2", "jupyter-builder>=1.2.0,<2"]
 build-backend = "hatchling.build"
 
 [project]
@@ -29,7 +29,7 @@ dynamic = ["version", "description", "authors", "urls", "keywords"]
 [project.optional-dependencies]
 dev = [
     "jupyterlab>=4",
-    "jupyter-builder>=1.0.0",
+    "jupyter-builder>=1.2.0",
 ]
 server = [
     "jupyter_ai_jupyternaut",

src/index.ts

@@ -120,7 +120,7 @@ const plugin: JupyterFrontEndPlugin<void> = {
       rmRegistry,
       translator: translator ?? undefined,
       welcomeMessage: trans.__(
-        `## Select a code cell and click **Explain Code** <img src="data:image/svg+xml;base64,${INFO_ICON_BASE_64}" /> or **Review Code** <img src="data:image/svg+xml;base64,${CHECK_ICON_BASE_64}" /> to get started.`
+        `Select a code cell and click **Explain Code** <img src="data:image/svg+xml;base64,${INFO_ICON_BASE_64}" /> or **Review Code** <img src="data:image/svg+xml;base64,${CHECK_ICON_BASE_64}" /> to get started.`
       ),
       attachmentOpenerRegistry,
       inputToolbarRegistry

src/model.ts

@@ -48,27 +48,28 @@ export class TutorChatModel extends AbstractChatModel {
   constructor(options?: IChatModel.IOptions) {
     super(options);
     this.name = 'Tutor';
-    this.setReady();
+    this.setReady(UUID.uuid4());
   }
 
   get user(): IUser {
     return { username: 'user', display_name: 'You' };
   }
 
-  sendMessage(message: ITutorNewMessage): void {
+  sendMessage(message: ITutorNewMessage): string {
     const userMsg: IMessageContent = {
       type: 'msg',
       id: UUID.uuid4(),
       time: Date.now() / 1000,
-      body: message.body,
+      body: message.body ?? '',
       sender: this.user,
       attachments: message.attachments
     };
     this.messageAdded(userMsg);
+    return userMsg.id;
   }
 
   async sendMessageToAI(message: ITutorNewMessage): Promise<void> {
-    if (!message.body.trim()) return;
+    if (!message.body?.trim()) return;
 
     this.sendMessage(message);
 
@@ -114,6 +115,7 @@ export class TutorChatModel extends AbstractChatModel {
   createChatContext(): ITutorChatContext {
     return {
       name: this.name,
+      id: this.id ?? '',
       user: this.user,
       users: [],
       messages: this.messages,