bring back participant used for inline v1 in notebooks (#527)

Author: amunger

package.json

@@ -1317,6 +1317,27 @@
 					}
 				]
 			},
+{
+				"id": "github.copilot.notebook",
+				"name": "GitHubCopilot",
+				"fullName": "GitHub Copilot",
+				"description": "%copilot.description%",
+				"isDefault": true,
+				"locations": [
+					"notebook"
+				],
+				"when": "!config.inlineChat.enableV2 && !config.github.copilot.chat.advanced.inlineChat2",
+				"commands": [
+					{
+						"name": "fix",
+						"description": "%copilot.workspace.fix.description%"
+					},
+					{
+						"name": "explain",
+						"description": "%copilot.workspace.explain.description%"
+					}
+				]
+			},
 			{
 				"id": "github.copilot.notebookEditorAgent",
 				"name": "GitHubCopilot",

src/extension/conversation/vscode-node/chatParticipants.ts

@@ -81,6 +81,7 @@ class ChatAgents implements IDisposable {
 		this._disposables.add(this.registerEditingAgentEditor());
 		this._disposables.add(this.registerEditsAgent());
 		this._disposables.add(this.registerEditorDefaultAgent());
+		this._disposables.add(this.registerNotebookEditorDefaultAgent());
 		this._disposables.add(this.registerNotebookDefaultAgent());
 		this._disposables.add(this.registerWorkspaceAgent());
 		this._disposables.add(this.registerVSCodeAgent());
@@ -234,6 +235,13 @@ Learn more about [GitHub Copilot](https://docs.github.com/copilot/using-github-c
 		return defaultAgent;
 	}
 
+	private registerNotebookEditorDefaultAgent(): IDisposable {
+		const defaultAgent = this.createAgent('notebook', Intent.Editor);
+		defaultAgent.iconPath = new vscode.ThemeIcon('copilot');
+
+		return defaultAgent;
+	}
+
 	private registerNotebookDefaultAgent(): IDisposable {
 		const defaultAgent = this.createAgent(notebookEditorAgentName, Intent.notebookEditor);
 		defaultAgent.iconPath = new vscode.ThemeIcon('copilot');