Backs the previously-dead header date-picker and Filters button with
an actual scoped query. getDashboard() takes optional dateFrom/dateTo/
warehouseId: received (renamed from receivedToday) is the only
activity counter and respects the date range, defaulting to today when
omitted; the 10 status-backlog counters respect warehouseId only;
totalWarehouses/emptyContainers/importTrains/exportTrains stay global
since nothing ties them to a specific warehouse in the schema. Adds a
warehouse Select + date-range picker to the dashboard header, with a
caption spelling out what is and isn't scoped.
Nest runs class and method guards together, so a class-level view key
ANDs with every action key below it. Staff granted only an action were
denied before their key was ever checked: OCC could not fulfil wagon
transfers, dispatchers could not create a yard, and track staff could not
assign first/last-mile vehicles. Reads now carry the view key themselves,
and the warehouses baseline lists every key its routes use.
