fix: use vehiclesService and add VEHICLES QUERY_KEYS

- Add VEHICLES to QUERY_KEYS constant
- Use vehiclesService.getAll() instead of direct API call
- Remove duplicate Vehicle type definitions
- Fix TypeScript type references

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

apps/edr-freight-web/backoffice/src/constants/QUERY_KEYS.ts

@@ -98,6 +98,12 @@ export const QUERY_KEYS = {
     list: (resource: FleetResourceSlug | string) => ["fleet", "list", resource] as const,
   },
 
+  VEHICLES: {
+    ROOT: ["vehicles"] as const,
+    list: (filter?: Record<string, unknown>) => ["vehicles", "list", filter ?? {}] as const,
+    byId: (id: string) => ["vehicles", "detail", id] as const,
+  },
+
   FIRST_MILE: {
     ROOT: ["first-mile"] as const,
     list: (filter?: Record<string, unknown>) => ["first-mile", "list", filter ?? {}] as const,