# why
- calling `act()` could prevent Stagehand from seeing and interacting
with newly loaded cross-origin iframes because its network-settling
helper overwrote the browser’s auto-attach configuration
# what changed
- removed the conflicting auto-attach call, leaving attachment
management to BrowserContext.
- added a regression test verifying that cross-origin iframes created
after act() remain visible in snapshots and support subsequent actions.


<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Fixes an issue where calling `act()` could prevent Stagehand from seeing
and interacting with newly loaded cross-origin iframes. The
network-settling helper in `actHandlerUtils.ts` was overwriting the
browser's auto-attach configuration, which broke attachment management
owned by BrowserContext.

- Removed the conflicting `Target.setAutoAttach` call; BrowserContext
now handles child-target attachment.
- Added a regression test verifying cross-origin iframes created after
`act()` remain visible in snapshots and support subsequent actions.

<sup>Written for commit c00a683d6ab753e88ce6434eb3db47a07202e341.
Summary will update on new commits.</sup>

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