Three deferred followups from the chunk-4 plan, all together:
A. Restrictions editor
- Resolver: time_of_week support (weekday set + time-of-day window),
in addition to the existing time_of_day.
- New OnCall.update_layer_restrictions/2 + clear_layer_restrictions/1.
- schedule_live/show: per-layer Restrict on-call shifts form
(Always on call / Time of day / Time of week with Mon-Sun checkboxes),
changes patched live and persisted via the resolver.
B. Drag-and-drop reorder
- New OnCall.reorder_layers/2 + reorder_escalation_rules/2 (atomic
transaction; validates id count + membership).
- assets/js/sortable_list.ts: minimal HTML5 drag-and-drop hook (no
external dep; mirrors the existing DeviceListReorder pattern),
registered as SortableList in app.ts.
- schedule_live/show + escalation_policy_live/show: layer/level cards
now carry data-id + draggable + a visible drag handle. Up/down arrow
buttons remain as a fallback for users on assistive tech.
C. Unified new-schedule UX
- schedule_live/show pre-opens the Add Layer form when the schedule
has zero layers, so the new-schedule -> add-layers flow lands ready
to act on. Two existing tests updated to seed a layer first; two
new tests verify the auto-open behaviour both ways.
Full suite 10,231 / 0 failures. Format/dialyzer clean.
