[BUG] Todoist "New Completed Task" source does not emit for recurring tasks

[ashwins01]

Describe the bug
The Todoist New Completed Task source (todoist-completed-task) does not emit an event when a recurring task is marked done. Non-recurring (one-off) task completions still emit correctly, so the trigger looks like it works, but every recurring completion is silently missed.

To Reproduce
Reproduced live against the Todoist API v1 (verified 2026-07-14). Using an authenticated Todoist account:

1. Create a recurring task: POST /api/v1/tasks with {"content": "recurring test", "due_string": "every day"}. Response confirms due.is_recurring: true.
2. Create a non-recurring control task: POST /api/v1/tasks with {"content": "normal test"} (due: null).
3. Complete both: POST /api/v1/tasks/{id}/close for each.
4. Re-fetch each task:
   • Recurring (GET /api/v1/tasks/{id}): checked: false, completed_at: null, completed_count: 1, and due.date has advanced to the next day. The task is NOT in a completed state — it was rescheduled.
   • Control (GET /api/v1/tasks/{id}): checked: true, completed_at set.
5. Query the exact endpoint the source polls: GET /api/v1/tasks/completed/by_completion_date?since=<today>&until=<tomorrow>.
   • Result: items contains only the control task. The recurring completion is absent, even though completed_count incremented.
6. For completeness, GET /api/v1/tasks/completed/by_due_date?since=...&until=... over the occurrence's due date also returns items: [] for the recurring completion.

Net: the recurring task was completed (Todoist recorded it), but it appears in neither v1 REST completed-task endpoint, so the source never emits it.

Expected behavior
Marking a recurring Todoist task as done should emit a "New Completed Task" event, matching the pre-v1-migration behavior.

Screenshots
N/A (verified via raw API responses; can attach the request/response bodies if helpful).
Additional context
Add any other context about the problem here.