[Bug]: Looking into known preview/iframe issue [Issue Fixed]

[zebbern]

What happened?

preview renders only as white

Steps to reproduce

No response

Error output

What should have happened?

No response

Environment info

Anything else?

No response

[A-x6]

@zebbern I don't think this is a Devonz problem I think it is with the webcontainer it self Because I have experienced this before on bolt.diy forks and on bolt.diy it self so yes a Webcontainer problem So Overall I think it is a Common problem

[zebbern]

@zebbern I don't think this is a Devonz problem I think it is with the webcontainer it self Because I have experienced this before on bolt.diy forks and on bolt.diy it self so yes a Webcontainer problem So Overall I think it is a Common problem

@DevFlex-AI the issues were:

Bug 1 - Preview self-URL: When activePreview is truthy but iframeUrl is undefined (race condition where 
activePreview gets set before probe completes, OR where the probe succeeds but the URL is briefly undefined), the
iframe renders with src={undefined} which browsers interpret as loading the current page. Fix: use iframeUrl ??
'about:blank'.

Bug 2 - Shell spawn validation: spawn() sends empty #projectId when called before boot() completes. Fix: add a guard
at the top of spawn().

These are also now fixed so its working as intended now

[A-x6]

@zebbern, I've got some time for coding and want to help Devonz blow up. I checked the latest Phase E v3 updates and noticed a few high-impact features that are still missing compared to paid builders. I'd love to work on these:

Screenshot-to-Live-Site: Adding a Vision-to-Code pipeline so users can drop an image and have Devonz build it instantly.
One-Click Demo Sandbox: A StackBlitz integration so people can try Devonz from the README without installing anything.
MCP Tool Marketplace: A UI for browsing/toggling MCP servers so the agent can easily use Google Search or local files.
Visual Reasoning Trace: An 'X-ray' sidebar showing the agent's step-by-step logic tree.
Ghost Mode: Background task persistence so the agent doesn't die when the tab closes.

Let me know if I should open individual issues for these or start with current bug fixes! Also These are suggestioon with the cli coding agent ones But as you said we need to fix the current bugs then we should do this

[zebbern]

it already has Screenshot-to-Live-Site

[A-x6]

@zebbern okay then what abut One-Click Demo Sandbox and the other features
One-Click Demo Sandbox: A StackBlitz integration so people can try Devonz from the README without installing anything.
MCP Tool Marketplace: A UI for browsing/toggling MCP servers so the agent can easily use Google Search or local files.
Visual Reasoning Trace: An 'X-ray' sidebar showing the agent's step-by-step logic tree.
Ghost Mode: Background task persistence so the agent doesn't die when the tab closes.