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.

FLOW.md

@@ -1,5 +1,7 @@
 # NearlExpress Console — Repository Flow Graph
 
+> **⚠️ STALE — describes the retired jupiter.nearle.app backend.** The console now talks exclusively to `api.doormile.com` via `REACT_APP_DOORMILE_URL` (see `src/utils/doormileAxios.js`, `src/pages/api/doormileApi.js`, and `express-console-api.md` at the repo root for the current endpoint reference). The `REACT_APP_URL` / `REACT_APP_URL2` env vars and every jupiter endpoint below no longer exist in the codebase — this file is kept for historical/architectural context only, not as an accurate current reference.
+>
 > Human-readable navigation, action, and data-flow diagrams for `nearlexpress-xpressconsole-d0ee01adebe9`.
 > Open this file in a Mermaid-aware viewer (GitHub, VS Code with the *Markdown Preview Mermaid* extension, or [mermaid.live](https://mermaid.live)).
 >