Desktop: legacy layout freezes when switching projects #39141

Description

Switching projects from the left project rail can freeze OpenCode Desktop when the legacy layout is active. The window stops responding and must be restarted.

The renderer log records this at the freeze:

Uncaught (in promise) TypeError: Cannot read properties of null (reading '0')

A Chrome DevTools Protocol capture at the failure showed repeated SolidJS cleanNode frames. The owner chain pointed to the accepting memo in the legacy PromptInput:

const accepting = createMemo(() => {
  const id = props.controls.session.id
  if (!id) return permission.isAutoAcceptingDirectory(sdk().directory)
  return permission.isAutoAccepting(id, sdk().directory)
})

This appears to be re-entrant Solid cleanup while the project/session subtree is being disposed. It resembles the Solid issue addressed by solidjs/solid#2062.

Plugins

No response

OpenCode version

Desktop 1.18.7

Steps to reproduce

1. Disable New layout designs so the legacy layout is active.
2. Open a project with an existing session.
3. Switch to another project from the left project rail.
4. Repeat if necessary; the renderer freezes and logs the null-property exception.

Screenshot and/or share link

No response

Operating System

Windows OpenCode Desktop connected to WSL

Terminal

No response