feat(stealth): 默认开启并收敛 chrome 指纹特征

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(),