Create, update (edit), move/reschedule, shift, reflect, or manage a block's checklist — bulk/batch, one or many in a single call. Pass `ops`, an array where each item has an `op` (create | update | move | shift | reflect | checklist) plus that op's fields; a single edit is just a 1-item array. Times are 24-hour HH:MM; for an event crossing midnight set endNextDay=true. `reflect` records how a PAST planned event actually went (kept | skipped | changed | added, with an optional actual time) — it never renames or re-times the plan; target one occurrence of a recurring event by its `seriesId@YYYY-MM-DD` id. `checklist` manages a block's microtasks: pass `items` to set/replace the ordered list (a template edit — whole series, or one occurrence with scope 'this'), or `check`/`uncheck` (by item id or exact text) to tick them off for a single occurrence; the current microtasks + each one's done state come back on a get_schedule read as the event's `checklist`. For a recurring event choose a `scope`: 'all' (default), 'future', or 'this' (the last two need `occurrenceDate`). To re-time an existing event use `move` (new start/date, duration kept) or `shift` (relative nudge by `byMinutes`); use `update` only to also rename, re-kind, re-area, or resize (change `end`). If you know the duration but not a conflict-free time (or only a rough window), use `schedule` instead of a create. By default the whole batch is atomic: if ANY op fails validation (e.g. a conflict), nothing is written and the failing ops are returned as errors — fix and resend. Pass `partial: true` for best-effort (apply what's valid). Ops apply in order as one transaction and are checked against each other: two creates can't double-book a slot, and an earlier move frees a slot a later op can reuse. Target each event id at most once per batch. Reference an area/activity type by id or by `areaName`/`activityTypeName`; create new ones first with manage_categories. If the user has a Google Calendar connected, creating or editing a calendar-linked event (or one created under their default sync calendar) also pushes the change to Google — the same as editing on the dial; don't edit an event get_schedule/find_event marked `readOnly` (it's from a calendar the user doesn't own and the change would silently revert). To remove events or clear a day use delete_events. The response reports `applied`, `failed`, `skipped` (validated but not written because the atomic batch was rejected), and per-op `results` (each with its 0-based `index`).