In the Linux desktop app (new layout), several menu items in the app menu are greyed out / disabled

Description

Items affected:

• File --> New Session
• File --> Open Project...
• View --> Toggle Sidebar
• View --> Toggle Terminal
• View --> Toggle File Tree

See screenshots below.

The corresponding titlebar buttons work fine (e.g. the "New session" button), so this is isolated to the menu layer.

Plugins

No plugins

OpenCode version

1.18.14

Steps to reproduce

1. Launch OpenCode Desktop.
2. Open the app menu (top-left "OpenCode" button) --> click File.
3. Observe that New Session and Open Project... are disabled (grey).
4. Click View - Toggle Sidebar, Toggle Terminal, Toggle File Tree are also disabled.

Expected behavior: All menu items should be enabled when the app is running and connected (server status is green).

Note: This one can potentially be a duplicate of #39785, as it appears to have the same root cause.

Additional Information

1. The issue occurs across all desktop versions I've tried in my Linux environment, and also after fully resetting the app's UI state (~/.config/ai.opencode.desktop) - so it is not stale/corrupt state.
2. Sidecar/server runs fine; sessions are created and listed correctly. Only the menu's enabled state is wrong.

Screenshot and/or share link

No response

Operating System

ZorinOS 18.1 (Ubuntu 24.04 + Wayland)

Terminal

Not relevant