[BUG] Cowork: Newly created scheduled tasks don't appear in sidebar until first run

Platform

Windows 11, Claude Desktop (Cowork mode), Max plan

What's Wrong?

When using create_scheduled_task via the scheduled-tasks MCP in Cowork mode, the newly created task does NOT appear in the "Scheduled" section of the left sidebar — even after closing and reopening the app.

What I verified:

1. list_scheduled_tasks API confirms the task exists, is enabled, and has a valid nextRunAt timestamp.
2. The SKILL.md file was correctly created at C:\Users\...\Claude\Scheduled\juan-compian-rent-reminder\SKILL.md with proper frontmatter (name, description) — identical format to working tasks.
3. The folder structure matches the two tasks that DO appear in the sidebar (wjgt-weekly-score-reminder and website-form-health-check).
4. An older task (launch-kinovia-ontop-startup) also exists in the Scheduled folder but does NOT appear in the sidebar — suggesting this is a persistent issue, not a one-time glitch.

Pattern observed: The two tasks that show in the sidebar have both completed at least one run (lastRunAt is populated). The two tasks that don't show have never run. This suggests the sidebar UI only picks up scheduled tasks after their first execution, rather than immediately upon creation.

What Should Happen?

Scheduled tasks created via create_scheduled_task should immediately appear in the "Scheduled" section of the Cowork sidebar — without needing to close/reopen the app or wait for the first run.

Logs

list_scheduled_tasks output:
{
  "taskId": "juan-compian-rent-reminder",
  "description": "Biweekly Friday reminder at 8:30 AM",
  "schedule": "At 08:32 AM, only on Friday",
  "cronExpression": "30 8 * * 5",
  "enabled": true,
  "nextRunAt": "2026-04-10T13:31:35.000Z"
}

Sidebar shows 2 of 4 tasks:
- WITH lastRunAt → visible (wjgt-weekly-score-reminder, website-form-health-check)
- WITHOUT lastRunAt → invisible (juan-compian-rent-reminder, launch-kinovia-ontop-startup)

Steps to Reproduce

1. Open Cowork mode in Claude Desktop on Windows 11
2. Use create_scheduled_task to create a new recurring task
3. Task creation succeeds (confirmed by list_scheduled_tasks)
4. SKILL.md file created in correct Scheduled/ directory
5. Look at sidebar → new task does NOT appear
6. Close and reopen app → still not there
7. Tasks that have run before DO appear

Environment

• Platform: Windows (Claude Desktop)
• OS: Windows 11
• Version: Latest Cowork mode (April 2026)

Additional Context

This prevents users from clicking "Run now" to pre-approve tool permissions for the first automated run.