feat: enhance location handling and localization; improve fallback mechanisms and unify type definitions

apps/backoffice/src/app/features/location/components/LocationForm.tsx

@@ -140,7 +140,10 @@ export function LocationForm({
               placeholder={t('location.selectType')}
               data={allAtLevel.map((lt) => ({
                 value: lt.id,
-                label: lt.names[locale],
+                // Not every locale is filled in on every row, and an option
+                // with no label is unpickable — fall back to English, then the
+                // code, which always exists.
+                label: lt.names[locale] || lt.names.en || lt.code,
               }))}
               {...form.getInputProps('locationTypeId')}
               size="sm"

apps/backoffice/src/app/features/location/components/LocationTree.tsx

@@ -177,7 +177,7 @@ export function LocationTree({
     if (!search) return tree;
 
     const matches = (loc: Location): boolean => {
-      const nameMatch = loc.names.en
+      const nameMatch = (loc.names.en ?? '')
         .toLowerCase()
         .includes(search.toLowerCase());
       const childMatch =

apps/backoffice/src/app/features/location/components/LocationTypeModal/columns.tsx

@@ -26,7 +26,10 @@ export function locationTypeColumns(
     },
     {
       header: t('location.name'),
-      cell: ({ row }) => row.original.names[locale],
+      // Falls back like the type Select: a row missing this locale shows its
+      // English name, then its code, rather than an empty cell.
+      cell: ({ row }) =>
+        row.original.names[locale] || row.original.names.en || row.original.code,
     },
   ];
 }

apps/backoffice/src/app/features/location/components/LocationTypeModal/index.tsx

@@ -18,6 +18,7 @@ import {
   useDeleteLocationTypeMutation,
 } from '../../api/location-api';
 import { AdvancedTable, notify, useErrorHandler, useServerTable } from '@ema-platform/ui';
+import type { LocationType } from '../../types/location';
 import { locationTypeColumns } from './columns';
 import { locationTypeColumnActions } from './actions';
 
@@ -68,12 +69,14 @@ export function LocationTypeModal({ opened, onClose }: { opened: boolean; onClos
     setShowForm(false);
   };
 
-  const handleEdit = (type: { id: string; code: string; names: { en: string; am: string }; level: number }) => {
+  const handleEdit = (type: LocationType) => {
     setEditingId(type.id);
     form.setValues({
       code: type.code,
-      namesEn: type.names.en,
-      namesAm: type.names.am,
+      // The form's inputs are controlled strings; a locale the row never had
+      // must edit as empty rather than reading back "undefined".
+      namesEn: type.names.en ?? '',
+      namesAm: type.names.am ?? '',
       level: type.level,
     });
     setShowForm(true);

apps/backoffice/src/app/features/location/types/location.ts

@@ -1,37 +1,24 @@
-export interface NamePair {
-  en: string;
-  am: string;
-}
+/**
+ * Re-exported from the shared contract so both apps read one definition.
+ *
+ * See the portal's copy of this file: the two apps each maintained their own
+ * `Location`/`LocationType` and drifted. The payload types below stay here —
+ * only the backoffice writes locations.
+ */
+export type {
+  Location,
+  LocationType,
+  ListResponse,
+} from '@ema-platform/api';
 
-export interface LocationType {
-  id: string;
-  code: string;
-  names: NamePair;
-  level: number;
-  createdAt: string;
-  updatedAt: string;
-}
+import type { Bilingual } from '@ema-platform/api';
 
-export interface Location {
-  id: string;
-  code: string;
-  names: NamePair;
-  locationTypeId: string;
-  parentId: string | null;
-  locationType?: LocationType;
-  children?: Location[];
-  createdAt: string;
-  updatedAt: string;
-}
-
-export interface ListResponse<T> {
-  count: number;
-  items: T[];
-}
+/** @deprecated Use `Bilingual` from `@ema-platform/api` — it carries om/so too. */
+export type NamePair = Bilingual;
 
 export interface CreateLocationTypePayload {
   code: string;
-  names: NamePair;
+  names: Bilingual;
   level: number;
 }
 
@@ -41,7 +28,7 @@ export interface UpdateLocationTypePayload extends CreateLocationTypePayload {
 
 export interface CreateLocationPayload {
   code: string;
-  names: NamePair;
+  names: Bilingual;
   locationTypeId: string;
   parentId?: string | null;
 }