Recurring tasks not appearing after creation

Problem

When adding a recurring task in the area view, the task can be successfully created but never appears again in the task list, even when the recurrence interval should have triggered a new instance.

Steps to Reproduce

1. Navigate to area view: https://productivity-coach-mvp.vercel.app/area/9594f078-9edc-4d09-8dcc-e3d0e8840d3f
2. Add a recurring task (e.g., daily task)
3. Complete or wait for recurrence interval
4. Check task list - no new recurring task instances appear

Expected Behavior

Recurring tasks should generate new instances based on their recurrence settings and appear in the task list.

Actual Behavior

Recurring tasks are created successfully but no subsequent instances are generated or displayed.

Environment

• Production URL: https://productivity-coach-mvp.vercel.app/
• Issue affects task list display and recurring task generation logic

Investigation Plan

• [ ] Reproduce bug with browser automation
• [ ] Check database state for recurring task records
• [ ] Examine recurring task generation logic
• [ ] Verify task list filtering and display logic