feat(stealth): 默认开启并收敛 chrome 指纹特征

src/browser.ts

@@ -152,7 +152,7 @@ export class BrowserManager {
   private lastSnapshot: string = '';
   private scopedHeaderRoutes: Map<string, (route: Route) => Promise<void>> = new Map();
   private colorScheme: 'light' | 'dark' | 'no-preference' | null = null;
-  private stealthEnabled: boolean = false;
+  private stealthEnabled: boolean = true;
   private stealthConnectionKind: StealthConnectionKind = 'local';
   private contextLocale: string | undefined = undefined;
   private contextTimezoneId: string | undefined = undefined;
@@ -172,17 +172,6 @@ export class BrowserManager {
    * Local Chromium gets args + init scripts; CDP/providers get init scripts only.
    */
   private getStealthPolicy(browserType: BrowserType = 'chromium'): StealthPolicy {
-    if (!this.stealthEnabled) {
-      return {
-        enabled: false,
-        connectionKind: this.stealthConnectionKind,
-        applyChromiumArgs: false,
-        applyInitScripts: false,
-        providerManaged: false,
-        capabilities: [],
-      };
-    }
-
     const applyChromiumArgs = this.stealthConnectionKind === 'local' && browserType === 'chromium';
     const applyInitScripts = true;
     const providerManaged = this.stealthConnectionKind === 'provider-kernel';
@@ -1414,11 +1403,9 @@ export class BrowserManager {
     if (options.colorScheme) {
       this.colorScheme = options.colorScheme;
     }
-    this.stealthEnabled = options.stealth ?? false;
-    this.contextLocale = this.stealthEnabled
-      ? this.resolveStealthLocale(options.headers)
-      : undefined;
-    this.contextTimezoneId = this.stealthEnabled ? this.resolveStealthTimezoneId() : undefined;
+    this.stealthEnabled = true;
+    this.contextLocale = this.resolveStealthLocale(options.headers);
+    this.contextTimezoneId = this.resolveStealthTimezoneId();
     this.contextHeaders = undefined;
     this.contextUserAgent = options.userAgent;
     // -p flag takes precedence over AGENT_BROWSER_PROVIDER.
@@ -2749,7 +2736,7 @@ export class BrowserManager {
     this.isPersistentContext = false;
     this.activePageIndex = 0;
     this.colorScheme = null;
-    this.stealthEnabled = false;
+    this.stealthEnabled = true;
     this.stealthConnectionKind = 'local';
     this.contextLocale = undefined;
     this.contextTimezoneId = undefined;

src/daemon.ts

@@ -450,7 +450,7 @@ export async function startDaemon(options?: {
 
               const ignoreHTTPSErrors = process.env.AGENT_BROWSER_IGNORE_HTTPS_ERRORS === '1';
               const allowFileAccess = process.env.AGENT_BROWSER_ALLOW_FILE_ACCESS === '1';
-              const stealth = process.env.AGENT_BROWSER_STEALTH !== '0';
+              // Stealth is always enabled in agent-browser-stealth
               const colorSchemeEnv = process.env.AGENT_BROWSER_COLOR_SCHEME;
               const colorScheme =
                 colorSchemeEnv === 'dark' ||
@@ -471,7 +471,7 @@ export async function startDaemon(options?: {
                 proxy,
                 ignoreHTTPSErrors: ignoreHTTPSErrors,
                 allowFileAccess: allowFileAccess,
-                stealth,
+
                 colorScheme,
                 autoStateFilePath: getSessionAutoStatePath(),
               });

src/protocol.ts

@@ -49,8 +49,6 @@ const launchSchema = baseCommandSchema.extend({
   provider: z.string().optional(),
   ignoreHTTPSErrors: z.boolean().optional(),
   allowFileAccess: z.boolean().optional(),
-  // Stealth toggle is part of launch semantics for local/CDP/provider modes.
-  stealth: z.boolean().optional(),
   colorScheme: z.enum(['light', 'dark', 'no-preference']).optional(),
   profile: z.string().optional(),
   storageState: z.string().optional(),

src/stealth.ts

@@ -244,8 +244,18 @@ function patchNavigatorWebdriver(): string {
  */
 function patchChromeRuntime(): string {
   return `(function(){
-  if (!window.chrome) { window.chrome = {}; }
-  if (!window.chrome.runtime) {
+  const chromeObject = ('chrome' in window && window.chrome) ? window.chrome : {};
+  if (!('chrome' in window)) {
+    try {
+      Object.defineProperty(Window.prototype, 'chrome', {
+        get: () => chromeObject,
+        configurable: true,
+      });
+    } catch {
+      try { Object.defineProperty(window, 'chrome', { value: chromeObject, configurable: true }); } catch {}
+    }
+  }
+  if (!chromeObject.runtime) {
     const makeEvent = () => ({
       addListener: () => {},
       removeListener: () => {},
@@ -268,7 +278,7 @@ function patchChromeRuntime(): string {
       onConnect: makeEvent(),
       onMessage: makeEvent(),
     };
-    Object.defineProperty(window.chrome, 'runtime', {
+    Object.defineProperty(chromeObject, 'runtime', {
       value: runtime,
       configurable: true,
     });

src/types.ts

@@ -32,7 +32,6 @@ export interface LaunchCommand extends BaseCommand {
   ignoreHTTPSErrors?: boolean;
   allowFileAccess?: boolean; // Enable file:// URL access and cross-origin file requests
   colorScheme?: 'light' | 'dark' | 'no-preference'; // Persistent color scheme override
-  stealth?: boolean; // Enable stealth mode to avoid automation detection
   // Auto-load state file for session persistence
   autoStateFilePath?: string;
 }