<!-- CURSOR_SUMMARY -->
> [!NOTE]
> Introduces website crawling for cloning workflows and updates tool I/O
to support multimodal follow-ups while keeping tool results text-only
for model compatibility.
> 
> - Adds `web_crawl` tool (consent preview, XML marker, Dyad Engine call
requiring Dyad Pro API key) that returns HTML/markdown/screenshot and
appends cloning instructions plus screenshot and content snippets via
`appendUserMessage`
> - Updates tool system: new `ToolResult` types,
`UserMessageContentPart`, and conversion to AI SDK V3
(`convertToolResultForAiSdk`); tool `execute` now returns `ToolResult`
> - Enhances streaming: handler tracks `pendingUserMessages` and injects
them between steps via `prepareStep` to deliver images/content to the
model
> - Registers `web_crawl` in `TOOL_DEFINITIONS`; e2e snapshot updated to
include the new tool
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
0205e38c2f067a1c2307b17a1397e4dcf3ce422d. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Adds a web_crawl agent tool to crawl a URL and return page content and a
screenshot for cloning. Tool results are structured text, and the
screenshot is injected as a follow-up user image for multimodal models.

- New Features
- Added web_crawl tool with consent preview and XML marker; calls Dyad
Engine /tools/web-crawl.
- Returns markdown and HTML plus a screenshot URL, with clear
placeholder image instructions for replication.
- Introduced ToolResult (text-only) and convertToolResultForAiSdk to
LanguageModelV3; updated tool execution to use it.
- Added appendUserMessage and step injection to include images after
tool results.
- Registered the tool in TOOL_DEFINITIONS with default consent set to
ask; requires a Dyad Pro API key in settings.

<sup>Written for commit 0205e38c2f067a1c2307b17a1397e4dcf3ce422d.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->