deleteActivity
destructive
resolves to `null` on success (204). Live-verified on synthetic fixtures created by the probe itself (never against pre-existing data) — create → delete → poll-confirm gone via `getActivities`
deleteActivity(activityId)| Parameter | Type | Optional | Description |
|---|---|---|---|
| activityId | number | string | no | Numeric id |
In Claude this is the delete_activity tool.