Chore: convert "unnamed" into constant

- "Unnamed/Unknown" simplified into just "Unnamed"
- Phrase variations have their own constants

src/views/HelpView.vue

@@ -199,7 +199,7 @@
       </p>
       <p>
         Then you can record your appreciation for... whatever: select any contact on the home page
-        (or "Unnamed") and send it. The main goal is to record what people
+        (or "{{ unnamedEntityName }}") and send it. The main goal is to record what people
         have given you, to grow giving economies. You can also record your own
         ideas for projects. Each claim is recorded on a
         custom ledger.
@@ -598,6 +598,7 @@ import * as Package from "../../package.json";
 import QuickNav from "../components/QuickNav.vue";
 import { APP_SERVER } from "../constants/app";
 import { PlatformServiceMixin } from "@/utils/PlatformServiceMixin";
+import { UNNAMED_ENTITY_NAME } from "@/constants/entities";
 
 /**
  * HelpView.vue - Comprehensive Help System Component
@@ -645,6 +646,13 @@ export default class HelpView extends Vue {
   APP_SERVER = APP_SERVER;
   Capacitor = Capacitor;
 
+  /**
+   * Get the unnamed entity name constant
+   */
+  get unnamedEntityName(): string {
+    return UNNAMED_ENTITY_NAME;
+  }
+
   // Ideally, we put no functionality in here, especially in the setup,
   // because we never want this page to have a chance of throwing an error.