Migrate console off jupiter.nearle.app to the Doormile Express API

Retires REACT_APP_URL/URL2/URL3 in favor of REACT_APP_DOORMILE_URL across
every page (orders, deliveries, riders, tenants, pricing, profile, reports,
dispatch). Fixes several field-mapping and envelope-check bugs found along
the way, most notably that /admin/milers/:id routes (block, assign-vehicle,
edit, notify) key off milerprofileid, not userid, and that a miler's real
fields are phone/availabilitystatus/displayname, not contactno/status/
firstname+lastname (confirmed against a live read-only session).

Also fixes several silent-failure bugs uncovered during that audit: order
creation and order cancellation showed a success toast but gave no feedback
at all on failure (createorder1.js had a dead notifyadmin() call that left
the loading spinner stuck forever on every failed submit), and Tenants.js's
pricing/profile updates never surfaced a failed response to the operator.

The AI dispatch optimiser (routes.workolik.com/routemate.workolik.com) and
its jupiter.nearle.app delivery-commit call remain untouched by design —
separate solver service with no equivalent in the new API.

API_ENDPOINTS.md

@@ -1,5 +1,7 @@
 # NearlExpress Console — API Endpoints Reference
 
+> **⚠️ STALE — describes the retired jupiter.nearle.app backend.** `src/pages/api/api.js` no longer calls any of the endpoints below; it now talks to `api.doormile.com` (`REACT_APP_DOORMILE_URL`) via `src/pages/api/doormileApi.js`. See `express-console-api.md` at the repo root for the current endpoint reference. Kept for historical context only.
+>
 > Auto-generated reference of every API call in `src/pages/api/api.js`.
 > Base URLs are resolved from the env files at the repo root.