Replace hardcoded notification strings with standardized constants

- Replace literal strings with notification constants in ContactsView.vue:
  * "Got an error sending the invite." → NOTIFY_INVITE_ERROR.message
  * "Could not set visibility on the server." → NOTIFY_VISIBILITY_ERROR.message
  * "Unconfirmed Hours" → NOTIFY_UNCONFIRMED_HOURS.title
- Remove unused NOTIFY_REGISTER_PROCESSING import
- Remove unused NOTIFICATION_TIMEOUTS constant in ShareMyContactInfoView.vue
- Fix unused parameter warnings in danger() and warning() methods
- Resolve all notification-related linting errors

src/views/ShareMyContactInfoView.vue

@@ -57,12 +57,6 @@ import { Account } from "@/db/tables/accounts";
 import { createNotifyHelpers, TIMEOUTS } from "@/utils/notify";
 
 // Constants for magic numbers
-const NOTIFICATION_TIMEOUTS = {
-  COPY_SUCCESS: 5000,
-  SHARE_CONTACTS: 10000,
-  ERROR: 5000,
-} as const;
-
 const DELAYS = {
   SHARE_CONTACTS_DELAY: 3000,
 } as const;
@@ -153,10 +147,7 @@ export default class ShareMyContactInfoView extends Vue {
    * Show success notifications after copying
    */
   private async showSuccessNotifications(): Promise<void> {
-    this.notify.copied(
-      "contact info",
-      TIMEOUTS.LONG,
-    );
+    this.notify.copied("contact info", TIMEOUTS.LONG);
 
     const numContacts = await this.$contactCount();
     if (numContacts > 0) {