Routines Calendar view doesn't show triggers with multi-value cron fields

Description

In the Claude Desktop Routines Calendar view, remote triggers that use multi-value cron hour fields (e.g., 0 9,12,16 * * 1-5) do not appear on the calendar, even though they are enabled and scheduled.

Steps to Reproduce

1. Create a remote trigger with a cron expression containing a comma-separated hour field, e.g. 0 9,12,16 * * 1-5 (runs at 9:00, 12:00, and 16:00 on weekdays)
2. Open Claude Desktop → Routines → Calendar tab
3. Look at today's scheduled routines

Expected Behaviour

The trigger should appear 3 times on the calendar for today (once per scheduled hour).

Actual Behaviour

The trigger does not appear at all in the Calendar view. Other triggers with simple cron expressions (e.g., 16 8 * * 1-5) show correctly.

The trigger does appear when clicking the "All" tab, and the API confirms it is enabled with a valid next_run_at timestamp.

Environment

• Claude Desktop on Windows 11
• Trigger confirmed active via API (RemoteTrigger list action)