RemoteTrigger: trigger_limit_reached but no triggers visible (list returns 500)

Bug Description

When attempting to create a new scheduled trigger via RemoteTrigger API:

• create returns HTTP 400: "Your plan gets 1 hourly cloud scheduled session. Disable or delete an existing schedule to continue."
• list returns HTTP 500 every time
• https://claude.ai/code/scheduled shows no triggers

Steps to Reproduce

1. Call RemoteTrigger with action: "list" → HTTP 500
2. Call RemoteTrigger with action: "create" → HTTP 400 trigger_limit_reached
3. Visit https://claude.ai/code/scheduled → Empty

Expected Behavior

• list should return 200
• If no triggers exist, create should succeed
• If a ghost trigger exists, it should be visible in UI for deletion

Environment

• Plan: Max
• Platform: Windows 11
• Claude Code VSCode Extension