feat: add tooltip text to activity indicator progress

Adds "Roo is working..." tooltip text to the progress indicator on the
sidebar icon. This provides accessible context when hovering over the
progress indicator.

Also adds a test to verify the tooltip text is included in the
progress options.

src/core/webview/ActivityIndicator.ts

@@ -32,6 +32,7 @@ export class ActivityIndicator {
 		vscode.window.withProgress(
 			{
 				location: { viewId: ActivityIndicator.VIEW_ID },
+				title: "Roo is working...",
 			},
 			() => {
 				return new Promise<void>((resolve) => {

src/core/webview/__tests__/ActivityIndicator.spec.ts

@@ -36,6 +36,17 @@ describe("ActivityIndicator", () => {
 			)
 		})
 
+		it("should include tooltip text in progress options", () => {
+			indicator.show()
+
+			expect(mockWithProgress).toHaveBeenCalledWith(
+				expect.objectContaining({
+					title: "Roo is working...",
+				}),
+				expect.any(Function),
+			)
+		})
+
 		it("should only call withProgress once when shown multiple times", () => {
 			indicator.show()
 			indicator.show()