add permanent purge functionality for wagons and routes

- Implemented a  method in  to permanently delete wagons without history.
- Added corresponding permissions for hard delete actions in .
- Updated the UI components to include purge actions, ensuring they are only available to users with the appropriate permissions.
- Created modals for confirming permanent deletions in  and .
- Enhanced API services to handle purge requests for locomotives, wagons, and routes.
- Added tests for the purge functionality in both  and  services to ensure proper behavior and error handling.

apps/edr-freight-api/src/seed/freight-permissions.registry.ts

@@ -235,6 +235,7 @@ export const FLEET_RAIL_PERMISSIONS: FreightPermissionSeed[] = [
   perm('e1a00001-0001-4000-8000-000000000002', 'edr_freight_app:locomotives:create', 'Create locomotive'),
   perm('e1a00001-0001-4000-8000-000000000003', 'edr_freight_app:locomotives:update', 'Update locomotive'),
   perm('e1a00001-0001-4000-8000-000000000004', 'edr_freight_app:locomotives:delete', 'Delete locomotive'),
+  perm('e1a00001-0001-4000-8000-000000000005', 'edr_freight_app:locomotives:hard_delete', 'Permanently delete locomotive'),
   perm('e1b00001-0001-4000-8000-000000000001', 'edr_freight_app:wagons:view', 'View wagons'),
   perm('e1b00001-0001-4000-8000-000000000002', 'edr_freight_app:wagons:create', 'Create wagon'),
   perm('e1b00001-0001-4000-8000-000000000003', 'edr_freight_app:wagons:update', 'Update wagon'),
@@ -248,6 +249,7 @@ export const FLEET_RAIL_PERMISSIONS: FreightPermissionSeed[] = [
   perm('e1b00001-0001-4000-8000-000000000008', 'edr_freight_app:wagons:transfer_view', 'View wagon transfer requests'),
   perm('e1b00001-0001-4000-8000-000000000009', 'edr_freight_app:wagons:transfer_cancel', 'Withdraw a wagon transfer request'),
   perm('e1b00001-0001-4000-8000-00000000000a', 'edr_freight_app:wagons:transfer_close_short', 'Close a transfer request short of the requested count'),
+  perm('e1b00001-0001-4000-8000-00000000000b', 'edr_freight_app:wagons:hard_delete', 'Permanently delete wagon'),
   perm('e1c00001-0001-4000-8000-000000000001', 'edr_freight_app:trains:view', 'View trains'),
   perm('e1c00001-0001-4000-8000-000000000002', 'edr_freight_app:trains:create', 'Create train'),
   perm('e1c00001-0001-4000-8000-000000000003', 'edr_freight_app:trains:update', 'Update train'),
@@ -257,6 +259,7 @@ export const FLEET_RAIL_PERMISSIONS: FreightPermissionSeed[] = [
   perm('e1d00001-0001-4000-8000-000000000002', 'edr_freight_app:routes:create', 'Create route'),
   perm('e1d00001-0001-4000-8000-000000000003', 'edr_freight_app:routes:update', 'Update route'),
   perm('e1d00001-0001-4000-8000-000000000004', 'edr_freight_app:routes:delete', 'Delete route'),
+  perm('e1d00001-0001-4000-8000-000000000005', 'edr_freight_app:routes:hard_delete', 'Permanently delete route'),
   perm('e1e00001-0001-4000-8000-000000000001', 'edr_freight_app:containers:view', 'View containers'),
   perm('e1e00001-0001-4000-8000-000000000002', 'edr_freight_app:containers:create', 'Create container'),
   perm('e1e00001-0001-4000-8000-000000000003', 'edr_freight_app:containers:update', 'Update container'),
@@ -530,12 +533,19 @@ export const FREIGHT_PERMS = {
     create: 'edr_freight_app:locomotives:create',
     update: 'edr_freight_app:locomotives:update',
     delete: 'edr_freight_app:locomotives:delete',
+    /**
+     * Permanently purge the row — irreversible, and separate from `delete`
+     * (which only decommissions) so it can be granted to far fewer people.
+     */
+    hardDelete: 'edr_freight_app:locomotives:hard_delete',
   },
   wagons: {
     view: 'edr_freight_app:wagons:view',
     create: 'edr_freight_app:wagons:create',
     update: 'edr_freight_app:wagons:update',
     delete: 'edr_freight_app:wagons:delete',
+    /** Permanently purge the row — irreversible; see locomotives.hardDelete. */
+    hardDelete: 'edr_freight_app:wagons:hard_delete',
     // Requester creates a transfer request; OCC fulfils it (picks the wagons and
     // executes the move). Distinct keys so OCC can hold fulfil without request.
     transferRequest: 'edr_freight_app:wagons:transfer_request',
@@ -562,6 +572,8 @@ export const FREIGHT_PERMS = {
     create: 'edr_freight_app:routes:create',
     update: 'edr_freight_app:routes:update',
     delete: 'edr_freight_app:routes:delete',
+    /** Permanently purge the row — irreversible; see locomotives.hardDelete. */
+    hardDelete: 'edr_freight_app:routes:hard_delete',
   },
   containers: {
     view: 'edr_freight_app:containers:view',