fix Stagehand headless mode

Author: shrey150

stagehand/browser.py

@@ -182,7 +182,7 @@ async def connect_local_browser(
 
         # Prepare Launch Options (translate keys if needed)
         launch_options = {
-            "headless": local_browser_launch_options.get("headless", False),
+            "headless": local_browser_launch_options.get("headless", stagehand_instance.config.headless),
             "accept_downloads": local_browser_launch_options.get(
                 "acceptDownloads", True
             ),

stagehand/config.py

@@ -70,6 +70,7 @@ class StagehandConfig(BaseModel):
         alias="domSettleTimeoutMs",
         description="Timeout for DOM to settle (in ms)",
     )
+    headless: bool = Field(False, description="Run browser in headless mode")
     browserbase_session_create_params: Optional[dict[str, Any]] = Field(
         None,
         alias="browserbaseSessionCreateParams",