VS Code extension: OAuth session disconnects 1-4 times daily, requires re-login

Description

The Claude Code VS Code extension intermittently loses its authenticated session, forcing a manual re-login. This happens approximately 1-4 times per day during normal usage.

Environment

• OS: Windows 11 Pro 10.0.26200
• VS Code: latest stable
• Claude Code extension: latest
• Plan: Max (Opus 4.6 1M context)

Behavior

• Mid-session, the extension suddenly reports being disconnected/unauthenticated
• No user action triggers it (not closing windows, not switching networks)
• Requires clicking through the login flow again to restore the session
• After re-login, everything works normally until the next disconnect
• Frequency: 1-4 times per day, seemingly random timing

Possible factors

• Multiple VS Code windows may be open concurrently
• Long sessions with auto-compaction enabled
• OAuth token refresh may be silently failing instead of renewing

Expected behavior

The session should remain authenticated throughout the day without requiring manual re-login, with token refresh happening transparently in the background.

Steps to reproduce

1. Log into Claude Code via VS Code extension
2. Use normally throughout the day
3. At some point (30min - several hours), the session disconnects without warning
4. Must re-authenticate to continue