[Bug] Hangs at startup in BuiltInChatModeManager.loadModesSync

[lichtin]

Environment

• OS: Windows
• Eclipse Version: 2026_03
• Plugin Version: latest 0.18

Describe the bug
Eclipse at startup hangs

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Additional context
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eclipse-hangs.txt