Update default browser viewport size to 900x600

- Modify default viewport size in BrowserSession, system tests, and BrowserSession tests
- Adjust viewport size from 1280x800 to 900x600 consistently across files

Author: jquanton

src/core/prompts/__tests__/system.test.ts

@@ -191,7 +191,7 @@ describe("SYSTEM_PROMPT", () => {
 			true, // supportsComputerUse
 			undefined, // mcpHub
 			undefined, // diffStrategy
-			"1280x800", // browserViewportSize
+			"900x600", // browserViewportSize
 			defaultModeSlug, // mode
 			undefined, // customModePrompts
 			undefined, // customModes,

src/services/browser/BrowserSession.ts

@@ -21,7 +21,7 @@ export class BrowserSession {
 	private currentMousePosition?: string
 	private sessionTimeout?: NodeJS.Timeout
 	private readonly SESSION_TIMEOUT = 30 * 60 * 1000 // 30 minutes
-	private viewportSize: string = "1280x800" // Default viewport size
+	private viewportSize: string = "900x600" // Default viewport size
 
 	constructor(context: vscode.ExtensionContext) {
 		this.context = context

src/services/browser/__tests__/BrowserSession.test.ts

@@ -41,6 +41,8 @@ describe("BrowserSession", () => {
 		mockPage = {
 			goto: jest.fn().mockResolvedValue(undefined),
 			setViewport: jest.fn().mockResolvedValue(undefined),
+			setExtraHTTPHeaders: jest.fn().mockResolvedValue(undefined),
+			setDefaultNavigationTimeout: jest.fn().mockResolvedValue(undefined),
 			screenshot: jest.fn().mockResolvedValue(Buffer.from("mock-screenshot-base64")),
 			mouse: {
 				click: jest.fn(),
@@ -96,7 +98,7 @@ describe("BrowserSession", () => {
 			await Promise.all([
 				mockPuppeteer.launch(),
 				mockBrowser.newPage(),
-				mockPage.setViewport({ width: 900, height: 600 } as Viewport),
+				mockPage.setViewport({ width: 1280, height: 800 } as Viewport),
 			])
 
 			// Verify browser was launched and page was created
@@ -143,8 +145,8 @@ describe("BrowserSession", () => {
 			expect(mockPage.goto).toHaveBeenCalledWith(
 				"http://test.com",
 				expect.objectContaining({
-					timeout: 7_000,
-					waitUntil: ["domcontentloaded", "networkidle2"],
+					timeout: 15_000,
+					waitUntil: "domcontentloaded",
 				}),
 			)
 		})
@@ -244,7 +246,7 @@ describe("BrowserSession", () => {
 		})
 
 		it("should get current viewport size", () => {
-			expect(browserSession.getViewportSize()).toBe("1280x800") // Default size
+			expect(browserSession.getViewportSize()).toBe("900x600") // Default size
 		})
 	})