[BUG] Desktop multi-window: output/context from one session leaks into another window (v1.18.1) #37078

Description

Description

When running multiple OpenCode Desktop windows simultaneously, the output from one window/session incorrectly appears in another window. This is a session state contamination issue across windows.

Steps to Reproduce

1. Open OpenCode Desktop v1.18.1
2. Open two separate project windows (Window A and Window B)
3. Run tasks in both windows concurrently
4. Observe that Window A occasionally displays file change lists, tool outputs, or context that belongs to Window B's session

Expected Behavior

Each window should maintain completely isolated session state. Output, file changes, and context from one session should never appear in another window.

Actual Behavior

• File change lists from Window B's session appear in Window A
• Session context/output is cross-contaminated between windows
• The contamination is intermittent and not consistently reproducible

Environment

• OS: Windows server 2019
• OpenCode Desktop Version: v1.18.1
• Shell: PowerShell 5.1

Plugins

No response

OpenCode version

1.18.1

Steps to reproduce

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Screenshot and/or share link

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Operating System

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Terminal

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