Implement configurable domain names for all copy link functionality

- Add PROD_SHARE_DOMAIN constant using existing AppString.PROD_PUSH_SERVER
- Update all 9 components/services to use configurable domain instead of hardcoded URLs
- Fix localhost issues in development mode for all sharing functionality
- Ensure all copy link buttons generate production URLs regardless of environment
- Add proper TypeScript imports and component properties for template access
- Maintain existing functionality while improving maintainability and consistency

Files updated:
- src/constants/app.ts (new constant)
- src/views/ClaimView.vue (claim + certificate links)
- src/views/ProjectViewView.vue (project links)
- src/views/ConfirmGiftView.vue (confirm gift links)
- src/components/HiddenDidDialog.vue (hidden DID links)
- src/views/UserProfileView.vue (profile links)
- src/views/InviteOneView.vue (invite links)
- src/views/ContactsView.vue (contact import links)
- src/views/OnboardMeetingSetupView.vue (meeting links)
- src/libs/endorserServer.ts (contact import confirm links)

Documentation added:
- docs/domain-configuration.md (comprehensive guide)
- README.md (quick reference section)

Security audit: ✅ All changes maintain existing security model
Testing: ✅ All linting errors resolved, only warnings remain
Performance: ✅ No performance impact, improves user experience

src/views/ConfirmGiftView.vue

@@ -436,7 +436,7 @@ import { Component, Vue } from "vue-facing-decorator";
 import { useClipboard } from "@vueuse/core";
 import { RouteLocationNormalizedLoaded, Router } from "vue-router";
 import QuickNav from "../components/QuickNav.vue";
-import { APP_SERVER, NotificationIface } from "../constants/app";
+import { NotificationIface } from "../constants/app";
 import { Contact } from "../db/tables/contacts";
 import * as serverUtil from "../libs/endorserServer";
 import { GenericVerifiableCredential, GiveSummaryRecord } from "../interfaces";
@@ -447,6 +447,7 @@ import TopMessage from "../components/TopMessage.vue";
 import { logger } from "../utils/logger";
 import { PlatformServiceMixin } from "@/utils/PlatformServiceMixin";
 import { createNotifyHelpers, TIMEOUTS } from "@/utils/notify";
+import { PROD_SHARE_DOMAIN } from "@/constants/app";
 import {
   NOTIFY_GIFT_ERROR_LOADING,
   NOTIFY_GIFT_CONFIRMATION_SUCCESS,
@@ -510,6 +511,7 @@ export default class ConfirmGiftView extends Vue {
   libsUtil = libsUtil;
   serverUtil = serverUtil;
   displayAmount = displayAmount;
+  PROD_SHARE_DOMAIN = PROD_SHARE_DOMAIN;
 
   /**
    * Component lifecycle hook that initializes notification helpers
@@ -570,7 +572,8 @@ export default class ConfirmGiftView extends Vue {
 
     const claimId = decodeURIComponent(pathParam);
 
-    this.windowLocation = APP_SERVER + "/deep-link/confirm-gift/" + claimId;
+    // Use production URL for sharing to avoid localhost issues in development
+    this.windowLocation = `${PROD_SHARE_DOMAIN}/deep-link/confirm-gift/${claimId}`;
 
     await this.loadClaim(claimId, this.activeDid);
   }